#177 The Intrepid vs. uranther

uranther · #1

"The Tibetan Restaurant Game: The Mystery of the Butter Tea"

We are continuing a pair Go game. I am taking black, having just made the move at S5.

Click Here To Show Diagram Code: [go]$$c Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . O . X O . B . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

We will continue this game Malkovich-style on Aug 25th.

The Intrepid · #2

What happens when four go players with a single go board enter a restaurant one hour before closing?

--An unfinished go game which demands a Malkovich-style completion on lifein19x19.com!

What happens if the restaurant is Tibetan?

--Same as above, except the players also get to experience a close encounter of the fourth kind with butter tea.

Butter tea--let me tell you--something just does not mix about it. No, literally. Butter and tea should not mix! When a substance composed of polar molecules (e.g., tea, which is almost entirely water) is added to a substance whose molecules are electromagnetically neutral (e.g., butter, which is 80%-82% fat), the polar molecules attract each other, pushing out the neutral ones aside. As a result, instead of mixing, the two substances separate into distinct layers. Yet, butter tea seems to defy this law. Despite being brown and opaque, the tea nevertheless seems uniform ... and, while I’m at it, why the hell would one want to add butter to tea in the first place? It is all a big mystery. Hopefully together, as this game progresses, we’ll be able to get to the bottom of it.

Now, back to the game itself. The game was begun about a month ago. With uranther leaving town for good, he, two of our friends, and I decided to get together for a farewell dinner ... and what is dinner without a go game on the side? Since we had only one board, we split into two teams. My team gave uranther’s team a handicap of six stones. After an hour of play (when we got kicked out of the restaurant), the above position was reached, with uranther having made the highlighted move. It is now my (white’s) turn.

About the players:

About the current game position:

uranther, I need to think some more on my next move, so I will make my move tomorrow.

illluck · #3

The Intrepid · #4

The Intrepid · #5

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . . 1 O . . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Explanation will appear below shortly.

The Intrepid · #6

Overall Plan:

1. attack Black’s right group, kill it, win; if not,
2. attack right group, make it live inside thereby building moyo in the center and eliminating the possibility of the two weak black groups connecting to one another; if not,
3. attack right group, try to make moves, such as the following, in sente:

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O W . . . | $$ | . . . X . . . . . O . . W W O X . W . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . . 1 O . . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Regardless of which of the above scenarios comes about (if any), keep sente to attack the black group on top--probably by playing O15:

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . W . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . . 1 O . . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

From there:
4. kill the top group, win; if not,
5. deny top group access to the center and make useful moves, such as the following (especially the white stone with the triangle), in sente:

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . W . . W . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . O . . W . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O Q . . . . . O . . . | $$ | . . . . . W . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . W W O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . . 1 O . . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

In any case, keep sente. Then,

6. invade black moyo on the left, preferably without strengthening black too much in the lower left; otherwise, white might get compensation in the form of an easy invasion into white’s moyo on the bottom.

Counting to the first order of magnitude:

Comments regarding :w1:

:

Despite spending more time thinking about the position, I still can’t decide whether the move I played, Q6, is better or worse than S6. I decided to play Q6 because S6 forces Black to go into the center, while Q6 gives Black a hard choice of whether to live in the center or on the side of the board. After WS6, I would expect Black to exchange 1 for 2 and then, possibly, play 3 and 5 (there are many alternatives, however, and it is not clear to me which of them is the best):

Click Here To Show Diagram Code: [go]$$Bc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . 4 O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . 5 . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . 3 . 1 O W . | $$ | . . . . . . . . . . . . O . X O 2 X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

In this position, if Black lives, White will not get any territory in the middle and his bottom right corner might come under attack, but he might gain additional strength in the center to use against the top Black group or against Black’s moyo on the left.

By contrast, after Q6, if Black responds at S6, White will play P6:

Click Here To Show Diagram Code: [go]$$Bc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . 2 W O 1 . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The stone at P6 cuts off three Black stones, it helps to build moyo in the middle, and it makes it harder for Black to create eyes in the center. I would be satisfied with this outcome.

If Black plays P6 instead, trying to live in the center as before, White will respond with S6:

Click Here To Show Diagram Code: [go]$$Bc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . 1 W O 2 . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I can’t quite decide if having the Black stone at P6 rather than Q6 is better for White or not. On the one hand, with P6 intersection occupied, Black cannot use it to make an eye there. On the other hand, on P6, the stone is closer to the center so it may prove more useful in the fight to come. Time will tell. I got to say, though, I am really excited at the prospect of the complications that are about to ensue--perfect position to have for a game with unlimited time.

uranther · #7

The restaurant decor matched the relaxed evening of go and butter tea. Each table was unique, with walls separating the booths, and dim lighting throughout. I remember there being only a few other patrons. We setup The Intrepid's magnetic goban on two tables and got to fighting!

The butter tea was interesting and not unpalatable -- an acquired taste. Our friend detested its ingestion (he once tried butter tea thinking it was Indian masala chai tea), arguing that butter has no place in tea. Tibetan butter tea is made from boiling tea leaves and adding yak butter and salt. The butter is the main ingredient because it provides a high amount of caloric energy; it suits the high altitude and the Tibetans' nomadic lifestyle. The butter also helps prevent chapped lips. (source: Wikipedia)

Another staple of the Tibetan diet is tsampa which is made from roasted barley flour and butter tea. The ingredients are gently mixed in a bowl until a dough consistency is reached. The dough is eaten unbaked, chased with more butter tea -- providing the necessary calories and complex carbs to be roaming about with yaks. (source: Wikipedia) I would have liked to try it, but I didn't see it on the menu :sad:

.

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . . 1 O . . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . 2 . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The Intrepid · #8

Here I was thinking to myself that I would be the only one writing about butter tea and, then, uranther comes out swinging out of the blue. I see what you did there. Battle commences in full force--on all the fronts. :tmbup:

The Intrepid · #9

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . 3 1 O . . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . 2 . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The Intrepid · **#10**

While uranther is thinking, I'd like to show an interesting defensive idea for Black.

What if Black tried the following?

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . 8 O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . 4 O X . . . | $$ | . . . . . . . . . . . . . 7 X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . 5 6 X . . . | $$ | . . X . . . . . . . . . . . 2 1 O 3 . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

and

seek to take advantage of White's weak cutting stones and of White’s bad aji in the top right group. Specifically, White must not play Q11 or P12, for Black will either capture the cutting stones or squeeze White as follows:

Click Here To Show Diagram Code: [go]$$Wcm9 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . 4 O . . . | $$ | . . . . . . . . . X . . . X 3 C O . . | $$ | . . . . . . . . . . . . . X O 1 2 . . | $$ | . . . X . . . . . O . . . X O X . . . | $$ | . . . . . . . . . . . . . O X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . O X X . . . | $$ | . . X . . . . . . . . . . . X O O O . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

and then,

Click Here To Show Diagram Code: [go]$$Wcm13 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . 6 . . 5 . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . X O 3 . . | $$ | . . . . . . . . . X . . . X O 1 O 2 . | $$ | . . . . . . . . . . . . . X O O X . . | $$ | . . . X . . . . . O . . . X O X 4 . . | $$ | . . . . . . . . . . . . . O X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . O X X . . . | $$ | . . X . . . . . . . . . . . X O O O . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

In this position, Black got to reinforce both of his weak groups, gained some additional territory, and even reduced White's territory for free. Thus, White would do well to resign here--out of shame, if for no other reason.

Playing P13 would be a much better try for White:

Click Here To Show Diagram Code: [go]$$Wcm9 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X 6 X X O . . | $$ | . . . . . . . O O M . . 4 3 1 O 7 . . | $$ | . . . . . . . . . X . 8 5 X 2 X O . . | $$ | . . . . . . . . . . . . 9 X Q . . . . | $$ | . . . X . . . . . O ? ? ? X O X . . . | $$ | . . . . . . . . . . ? ? ? O X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . O X X . . . | $$ | . . X . . . . . . . . . . . X O O O . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

In this diagram, White has no stones in the shaded area and Black has the cutting point at K13 to aim at. Therefore, the top Black group seems to be out of danger. Similarly, the right group should be secure as well, given that it now has an eye at P11 and that White has no stones in the shaded area. Perhaps White can still get some useful moves in sente by attacking the two groups, but Black should be satisfied with this result.

Thankfully for White, there is a tesuji at Q9:

Click Here To Show Diagram Code: [go]$$Wcm9 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . X O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . X O X . . . | $$ | . . . . . . . . . . . . . O X 1 . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . O X X . . . | $$ | . . X . . . . . . . . . . . X O O O . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Now, either

Click Here To Show Diagram Code: [go]$$Bcm10 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . X O . . | $$ | . . . . . . . . . . . . . X O 2 4 . . | $$ | . . . X . . . . . O . . . X O X 3 . . | $$ | . . . . . . . . . . . . . O X O . . . | $$ | . . . . . . . . . . . . . . 1 . X . . | $$ | . . . . . . . . . . . . . O X X . . . | $$ | . . X . . . . . . . . . . . X O O O . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

or (which is worse)

Click Here To Show Diagram Code: [go]$$Bcm10 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X 1 X O . . | $$ | . . . . . . . . . . . . . X O 3 . . . | $$ | . . . X . . . . . O . . . X O X . . . | $$ | . . . . . . . . . . . . . O C O 4 . . | $$ | . . . . . . . . . . . . . . 2 . X . . | $$ | . . . . . . . . . . . . . O X X . . . | $$ | . . X . . . . . . . . . . . X O O O . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

In either case, Black would not solve his problems this way.

Thus, even though this defensive idea has a refutation, it should nevertheless be kept in mind. There could be variations where this idea works. Perhaps Black should not play :b2:

at P6 but at O10 straight away.

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . 2 O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . . 1 O . . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Had uranther played this way, I would need to consider carefully whether to go for this:

Click Here To Show Diagram Code: [go]$$Wcm3 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . 2 O . . | $$ | . . . . . . . . . . . . . X O 5 7 . . | $$ | . . . X . . . . . O . . . X O X 6 . . | $$ | . . . . . . . . . . . . . 1 X 3 . . . | $$ | . . . . . . . . . . . . . . 4 . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . . O O 8 . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

or for this:

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . 2 O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . 3 1 O . . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . . . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

uranther · **#11**

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . 3 1 O . . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . 4 2 . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The Intrepid · **#12**

I think everything is under control on the bottom side of the board. The Black stones die there straight up or I get a huge wall facing the center (which means easier attacking and lots of central territory). On BN3, I was going to play Q2.

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . . X . X O . . | $$ | . . . . . O . . . . . . 4 O . X O . . | $$ | . . . . . . . . . . . . . . . 5 . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

On BR2, I intended to play S2 and then either a, b, c, or maybe even d depending on Black's response.

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . b X . X O . . | $$ | . . . . . O . . . . . . c O . X O . . | $$ | . . . . . . . . . . . . . d . a 4 5 . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I need to think some more about my move. I am choosing between a, b, and c.

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . a O . X O . X . | $$ | . . . X . . . . . O . b 4 X . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . c . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

So far, c looks promising.

The Intrepid · **#13**

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . 5 O . X O . X . | $$ | . . . X . . . . . O . . 4 X . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I decided to play this move because I did not like the consequences of Black playing there. Everything is still fine, I think. That said, I should have been calculating these variations long before now--when I played :w3:

. In my thirst to play a "super severe move of great justice," as someone aptly put it on this forum once, I failed to take the requisite amount of time to peer deeply enough into the position. I also failed to consider the merits of the alternative moves. For instance, I should have pondered 3 at S6:

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . . O O 3 . | $$ | . . . . . . . . . . . . O . X O M X . | $$ | . . . X . . . . . O . . . 2 . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . C . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

This would have applied more pressure on the right Black group and would have practically eliminated the aji of the cut at R5 (BR2 would not be sente, as it is now, for instance). Also, I should have given more thought to the simple reinforcing move N4:

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . . O O . . | $$ | . . . . . . . . . . . . O . X O . X . | $$ | . . . X . . . . . O . . 3 2 . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Sure, this would have meant that Black got a few points for free, but playing this way would also not entail any additional risk on my part. Anyhow, I think what I played is fine--I just wish I spent more time thinking about it.

The Intrepid · **#14**

A Daring Challenge to the Spectators and Go Pro-wannabes:

illluck · **#15**

skydyr · **#16**

The Intrepid · **#17**

The Intrepid wrote:

A Daring Challenge to the Spectators and Go Pro-wannabes:

My challenge did not generate quite the enthusiasm I was hoping for. Tough crowd, man, tough crowd. Still, two responses is better than nothing.

The reason I seek to analyze the status of the top group now is that I worry that the opportunity to do so might never actually arise in the game. The board position might change or Black might resign if one of the other two weak groups dies first.

In any case, I took another look at the proposed position. I still can’t make the black group live. The problem is that either the White stone at the middle of Black’s group gets connected to its brethren or else Black does not get enough time to form a second eye. For instance, suppose Black plays as follows to try to form a second eye on the edge of the board:

Click Here To Show Diagram Code: [go]$$Bc One try for Black $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . 2 5 . . 3 4 . . | $$ | . . . X . O . X O O . O 1 X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . O . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O O . . . . . O . . . | $$ | . . . . . . . O . X . . . X . . O . . | $$ | . . . . . . . O . . . . . X O . . . . | $$ | . . . X . . . O O O O O O O O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . O O . X O . X . | $$ | . . . X . . . . . O . . X X . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Even though it may seem as if Black has succeeded in his goal, White has the following tesuji, which threatens to capture the marked Black stone:

Click Here To Show Diagram Code: [go]$$Bc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . O X . . X O . . | $$ | . . . X . O . X O O . O X X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O B . 6 O . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O O . . . . . O . . . | $$ | . . . . . . . O . X . . . X . . O . . | $$ | . . . . . . . O . . . . . X O . . . . | $$ | . . . X . . . O O O O O O O O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . O O . X O . X . | $$ | . . . X . . . . . O . . X X . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

If Black attempts to prevent this by playing at M15, White proceeds as follows:

Click Here To Show Diagram Code: [go]$$Bcm7 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . O X . . X O . . | $$ | . . . X . O . X O O . O X X . . O . . | $$ | . . . X . X X X O . O X 3 . . X . O . | $$ | . . . . . . . O X O X 1 O O . . . . . | $$ | . . . X . . X X X O . 2 X 4 X X O . . | $$ | . . . . . . . O O O . . 5 6 7 O . . . | $$ | . . . . . . . O . X . . 8 X . . O . . | $$ | . . . . . . . O . . . . . X O . . . . | $$ | . . . X . . . O O O O O O O O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . O O . X O . X . | $$ | . . . X . . . . . O . . X X . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

White stones escape.

If it is true, as I believe, that the top Black group is dead in this scenario, the next question is how many of these additional White stones on the outside are actually needed to render the Black group dead. I am going to try to figure this out soon.

Keeping in mind what I’ve just discussed above and returning to the actual position in the game, an ideal (from my perspective) development of the game would be that uranther survives on the bottom, but finds himself forced to make a mad dash for the center with his right group. As it runs, I get to place all the right stones in the center and, then, unexpectedly (from uranther’s point of view) I play an innocently looking move at K13, threatening his top group. Then, uranther ignores the move, thinking he got off lightly, but O15 follows and his whole top group dies. This would be an awesome way to end this game! I can hope!

uranther · **#18**

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . 5 O . X O . X . | $$ | . . . X . . . . . O . 6 X X . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The Intrepid · **#19**

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . O O . X O . X . | $$ | . . . X . . . . . O . 6 X X . X O . . | $$ | . . . . . O . . . . . . . O . X O . . | $$ | . . . . . . . . . . . . . . . 7 . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

uranther’s last move is a horrific blunder. He will now have to work miracles to save his bottom group. Even if he somehow does so, White will receive a far greater compensation in return than the one White would have gotten if Black played R2 instead. After BR2, which is sente, I would expect something like this to happen (I did not spend much time reading all this, so some moves may not be optimal):

Click Here To Show Diagram Code: [go]$$Bcm6 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . O O . X O . X . | $$ | . . . X . . . . . O . . X X . X O . . | $$ | . . . . . O . . . . 3 . . O . X O . . | $$ | . . . . . . . . . . . . . . . . 1 2 . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

followed by something akin to:

Click Here To Show Diagram Code: [go]$$Wcm9 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . O O . X O . X . | $$ | . . . X . . . . . O 3 2 X X . X O . . | $$ | . . . . . O . . . 5 X 1 4 O . X O . . | $$ | . . . . . . . . . . 6 . . . 8 7 X O . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Click Here To Show Diagram Code: [go]$$Wcm17 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . 5 O X . c . | $$ | . . . . . . . . . . . . . . X . . b . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O a . | $$ | . . . . . . . . . . . O O . X O . X . | $$ | . . . X . . . . . O O X X X . X O . . | $$ | . . . . . O . . . O X C X O . X O . . | $$ | . . . . . . . . . 3 X 4 . 2 X O C O . | $$ | . . . . . . . . . . . . . . . . 1 . . | $$ ---------------------------------------[/go]

I did not analyze the resulting position too deeply, so I am not sure if White can get away with W21 or if White needs to play at a, b, or c instead. Regardless, the outcome of this long variation is that Black lives on the bottom--reducing White’s territory by about 30 points and gaining around 8 points of territory. However, White gets to kill Black’s group on the right in exchange and also gets the bottom right corner. This is worth about 35-40 points. In addition to this, Black bottom group gets contained inside while White receives a strong wall on the outside. As a result, White can hope to get many points in the center (especially if W21 is possible). Therefore, the trade is clearly favorable for White.

Yet, this would still have been a far better outcome than what Black can hope to get now. After WQ2, if Black group is to get life, it will have to be much further to the left than before (somewhere in the shaded area).

Click Here To Show Diagram Code: [go]$$Wc Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . O O . X O . X . | $$ | . . . X . . . . . O . 6 X X . X O . . | $$ | . . . . . O . . ? ? ? ? ? O . X O . . | $$ | . . . . . . ? ? ? ? ? ? ? . . 7 . . . | $$ | . . . . . . ? ? ? ? ? ? ? . . . . . . | $$ ---------------------------------------[/go]

In turn, this means that White would get an even longer and even stronger wall on the outside.

Black is in big trouble.

The Intrepid · **#20**

Incidentally, returning to the variation I suggested in the previous comment, White does not benefit from playing W9:

Click Here To Show Diagram Code: [go]$$Bcm6 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . O O . X O . X . | $$ | . . . X . . . . . O . . X X . X O . . | $$ | . . . . . O . . . . 3 . . O . X O . . | $$ | . . . . . . . . . . . . . . . 4 1 2 . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

In response, Black should first exchange 10 for 11 and then play:

Click Here To Show Diagram Code: [go]$$Bcm10 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . 4 O O O . . | $$ | . . . . . . . . . . . O O 3 X O . X . | $$ | . . . X . . . . 2 O . . X X . X O . . | $$ | . . . . . O . . . 1 X . . O . X O . . | $$ | . . . . . . . . . . . . . . 5 O X O . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Next, depending on White's response, Black plays:

Click Here To Show Diagram Code: [go]$$Wcm15 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . O O O O . . | $$ | . . . . . . . . . . . O O X X O . X . | $$ | . . . X . . . . O O . . X X . X O . . | $$ | . . . . . O . . . X X . . O 2 X O . . | $$ | . . . . . . . . . . . . . . X O C O . | $$ | . . . . . . . . . . . . . . . . 1 . . | $$ ---------------------------------------[/go]

or

Click Here To Show Diagram Code: [go]$$Wcm15 Prisoners: $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . O . . . . . . . . . . . | $$ | . . . X . O . X O O . O . X . . O . . | $$ | . . . X . X X X O . O X . . . X . O . | $$ | . . . . . . . O X O X . . . . . . . . | $$ | . . . X . . X X X O . . X . X X O . . | $$ | . . . . . . . O O . . . . . . O . . . | $$ | . . . . . . . . . X . . . X . . O . . | $$ | . . . . . . . . . . . . . X O . . . . | $$ | . . . X . . . . . O . . . . O X . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . O O O O . . | $$ | . . . . . . . . . . . O O X X O . X . | $$ | . . . X . . . . O O . . X X . X O . . | $$ | . . . . . O . . . X X . . O 1 X O . . | $$ | . . . . . . . . . . . . . . X C X O . | $$ | . . . . . . . . . . . . . . . 2 . . . | $$ ---------------------------------------[/go]

and White cannot kill Black.

#177 The Intrepid vs. uranther

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