Move 30

Bill Spight · #1

Move 30 is typically late in the opening or perhaps early in the middle game. By now the game has taken on its own unique character, as a rule. It is a point at which Honinbo Jowa recommended assessing the position. And presumably forming a plan.

Here are a number of positions from pro games with White to play move 30 (or move 29 in a 2 stone game), for your enjoyment.

In most of them one of the players is a Meijin or later Meijin. I selected them because I liked White's move. Where would you play?

Diagrams are hidden to save space.

Edit: Added coordinates. Thanks, Uberdude!

Dusk Eagle · #2

A hard one, but I want to support my weakest group,
perhaps connect up to my right group, and seal the black group in.

Click Here To Show Diagram Code: [go]$$W A hard one, but I want to support my weakest group,\n perhaps connect up to my right group, and seal the black group in. $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . X . . . . . | $$ | . . . , O . . . . , . . . . . , X . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . X . O . | $$ | . . O . . . . . . X . . . . . . . . . | $$ | . . . X . . . . X O . . W . . . . . . | $$ | . . O . . . X . X O . . . . . O . . . | $$ | . . . , X . . O . O . . X . . , O . . | $$ | . . . X . O . . O . X . . . . X O . . | $$ | . . . . . . . . . . . . . . X . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Another hard one

Click Here To Show Diagram Code: [go]$$W Another hard one $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . W . . . . X . . . . | $$ | . . . O . . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . X X . . . O O . . . . . . . . . | $$ | . . . X O . . X X O . . . . . X . . . | $$ | . . X O . . . . . . . . . . . . . . . | $$ | . . X O . X . . X , O . . O . , . . . | $$ | . X O . O O . . . . . . . . . . O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

And another really hard one. I chose this because it gives some aji
in black's corner.

Click Here To Show Diagram Code: [go]$$W And another really hard one. I chose this because it gives some aji\n in black's corner. $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . O . . . . W . X . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . X . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X X . . . . . . . . . . . . . . . | $$ | . . X O . . . . . . . . . . . . . . . | $$ | . . X O . . . . . . . . . . . . . . . | $$ | . . X O . . . . . , . . . . . , . . . | $$ | . . . X O X . O . . . . . X . X . . . | $$ | . . . X O . . . . . . . . . . . . . . | $$ | . . . . O . O . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X , . . . . . , . . O . . O . . . | $$ | . . . . X . O . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I've given up hope on there being any easy ones.
:w1:

to reinforce then :w3:

to attack?

Click Here To Show Diagram Code: [go]$$W I've given up hope on there being any easy ones.\n to reinforce then to attack? $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . X . . . . . . . . . . . . . . . | $$ | . . X . . X O . . . . . . X . . . . . | $$ | . . . O . O . . . , . . . . . X . X . | $$ | . X . . . . O . . . . . . . . . . . . | $$ | . . O . . . . . . . . . . . O . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . O . . . | $$ | . . . X . . . . . . . . . . . . . . . | $$ | . . . . . . 3 . . . . . . . . . . . . | $$ | . . . X . . . . . . . . . . . . . . . | $$ | . . O . . . . . . . . . . . . O O . . | $$ | . . . . . . O . . . . . . . . O X . . | $$ | . . . O . 1 . . . , . . . . X , X . . | $$ | . . . . . X 2 . . . . . . . . X . . . | $$ | . . . X . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Build a wall with :wc:

then jump to :et:

Click Here To Show Diagram Code: [go]$$W Build a wall with then jump to $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . X . . . . . . . . . . . . . . . | $$ | . . . , W . . . . , . . . . . X . . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , X . . | $$ | . . O . T . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . X . . . . . . . | $$ | . . X . . . . . . . . . . O . . . . . | $$ | . . . . . . . . . . . X X O . . . . . | $$ | . . . . . . . . . . O . . O X . . . . | $$ | . . . X . . . . . , O X . X O O O . . | $$ | . . . X . O . . O . O X . X X O . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

???

Click Here To Show Diagram Code: [go]$$W ??? $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O O . O . X . . X . . O . . . . | $$ | . . . , X . . . . , . . . X . , X . . | $$ | . . X . . . . . . . . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . X . . . . . . . . . . . X . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . O . . W . . . . . . . . . O . . | $$ | . . X , . . . . . , . . . . . , . . . | $$ | . . X . O . . X . . X . O . . O . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Build up the right side

Click Here To Show Diagram Code: [go]$$W Build up the right side $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O . X . . X . . . X . . O X . . . | $$ | . . . , . . . . . , . . . . X , X . . | $$ | . . O . . O . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . W . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . X . . . . . . . . . . . . . . . | $$ | . . . . X . . . . . . . . . . . . . . | $$ | . . . X O O . O . . . O . . . . O . . | $$ | . . X , . . . . . , . . . . . , . . . | $$ | . . . X O X . X . . . X . . . O . . . | $$ | . . . . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

If black gets this move it's huge. This isolates the top
black group and supports white's center stone.

Click Here To Show Diagram Code: [go]$$W If black gets this move it's huge. This isolates the top\nblack group and supports white's center stone. $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . X . . . . . . . . | $$ | . . . O . O . . . , . . . . X , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . O . . . . | $$ | . . . , . . . . . , . . . . . , O . . | $$ | . . . . . . . . . . . . X . . X O . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . O X . . . . . . O . W . . . . . . | $$ | . . O X . . . . . , . . . . O , O . . | $$ | . . O X . X . . . . X . X . . . . . . | $$ | . . O O X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Help white's weakest group. Don't want it to get surrounded.

Click Here To Show Diagram Code: [go]$$W Help white's weakest group. Don't want it to get surrounded. $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . O . X . . X X X X X . . . . . | $$ | . . O , . . . . . , O O X O . X . . . | $$ | . . . . . . . . . . . . O . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . X . . . W . . . . . . . X . . . | $$ | . . . . . . . . . . X . . . . . . . . | $$ | . . . X . O . . . , . . . . . , X . . | $$ | . . . . X O . . O . X . . . O X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Put pressure on the bottom right black group and give a bit of support
to the left white group. If black pushes through, sacrifice the two white stones
for the outside.

Click Here To Show Diagram Code: [go]$$W Put pressure on the bottom right black group and give a bit of support\nto the left white group. If black pushes through, sacrifice the two white stones\nfor the outside. $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . X O . . . . . . . . O . O . . . . | $$ | . . . X . . . . . , . . . X . , X . . | $$ | . . . X . . . . . . . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . W . . . . . . . O . . . | $$ | . . . X . X . . . . . . . . . . X . . | $$ | . . X , . X O . . , . . . . O , . . . | $$ | . . . X O . O . . X . . X . . O . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I had to decide between this and :et:

, and slightly prefered this.

Click Here To Show Diagram Code: [go]$$W I had to decide between this and , and slightly prefered this. $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . O . . . . . . . O . . . . . . | $$ | . . . , . . . . . W . . . . X , X . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . X . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . T . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . X . . . . . . . . . . . . . . . | $$ | . . . X O . . . . . . . . . . . . . . | $$ | . . X O . O . . . . . . . . . . O . . | $$ | . . X X O X O . . , . . X . O , . . . | $$ | . . X O O . . . . X . . X O . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Bill Spight · #3

@ Dusk Eagle

Some nice ideas.

You and I are batting about the same, but then neither of us is Meijin.

illluck · #4

My attempts, should prove to be entertaining if nothing else :p

Bill Spight · #5

@ illluck

Also some interesting ideas.

Dusk Eagle · #6

I like this idea in particular by illuck:

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

Having now seen this move, I think it's better than what I came up with.

I also considered this move which he suggested:

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

but I felt weird if black played :b2:

.

illluck · #7

Dusk Eagle wrote:

I like this idea in particular by illuck:

Thanks, but that was also my reaction when I saw your move for this situation XD

Uberdude · #8

Bill Spight wrote:

I selected them because I liked White's move.

This makes me feel I can't play 'normal' moves but have to find something special...

For #1 my first thought was hane like illluck or cut, but if I have to find something special thought of attach on top of black's 4th line stone down there. Black's group to the left isn't secure yet so maybe the cut could be good as it tries to maximize the efficiency of that kosumi peep move (hmmm Bill could you add coordinates?).

cyclops · #9

Tomorrow I'll solve the rest

Edit: Tomorrow has come. Here are the remaining solutions. I must say I am much less confident about these. I pray one is correct.

Bill Spight · **#10**

Uberdude wrote:

Bill Spight wrote:

I selected them because I liked White's move.

This makes me feel I can't play 'normal' moves but have to find something special...

For #1 my first thought was hane like illluck or cut, but if I have to find something special thought of attach on top of black's 4th line stone down there. Black's group to the left isn't secure yet so maybe the cut could be good as it tries to maximize the efficiency of that kosumi peep move (hmmm Bill could you add coordinates?).

Here is one that I almost included.

Murase Shuho (W) vs. Honinbo Shuei, 1885

Click Here To Show Diagram Code: [go]$$Wcm30 Murase Shuho (W) vs. Honinbo Shuei, 1885 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . X . O . . O . . . . . O . . . . | $$ | . . . , . . . . . , . O . . . , X . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . X , X . . | $$ | . . O . O . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . . X . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . X . . . . . . . . . . . . O 1 . . | $$ | . . X O . . . . . , . . . . . , . . . | $$ | . X O . O . O . X . . X . . . O . . . | $$ | . X O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I like

, but I felt that it was too obvious. I wanted a certain amount of educational and entertainment value.

Anyway, it was a close call.

I added coordinates. Thanks for the suggestion.

I should have done it anyway.

Bill Spight · **#11**

Game 1. What White played, and the SGF with sportscaster comments from me.

Dosetsu (W) vs. Dochi, 1706

Click Here To Show Diagram Code: [go]$$Wcm30 Dosetsu (W) vs. Dochi, 1706 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . X . . . . . | $$ | . . . , O . . . . , . . . . . , X . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . 3 . . . . . . X . O . | $$ | . . O . . . 4 . 1 X 2 . . . . . . . . | $$ | . . . X . . . . X O . 5 . . . . . . . | $$ | . . O . . . X . X O . . . . . O . . . | $$ | . . . , X . . O . O . . X . . , O . . | $$ | . . . X . O . . O . X . . . . X O . . | $$ | . . . . . . . . . . . . . . X . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

White's stones on the bottom side are under attack. :w30:

is IMO almost dictated, as it threatens to push and cut, and simply running is seldom a good idea. :b31:

is the expected strong counter. Then :w32:

looks right and left. After :b33:

prevents the push and cut, :w34:

puts pressure on Black's two central stones.

Note: At the time, the difference in strength between pro ranks was greater than later on, and certainly now. But weaker dans were often underrated. The difference between 8 dan and 6 dan was like a difference of one amateur rank today.

hyperpape · **#12**

Adding "Jowa says 'don't run'" to the drinking game

cyclops · **#13**

Bill Spight wrote:

Game 1. .... ( solution )

100% score so far!

Bill Spight · **#14**

Game 2

Kobayashi Koichi (W) vs. Cho Chikun, 1984, 5.5 komi

Click Here To Show Diagram Code: [go]$$Wcm30 Kobayashi Koichi (W) vs. Cho Chikun, 1984, 5.5 komi $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . O . . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 2 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . 5 . 3 . 1 . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . 4 . X . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . X X . . . O O . . . . . . . . . | $$ | . . . X O . . X X O . . . . . X . . . | $$ | . . X O . . . . . . . . . . . . 8 . . | $$ | . . X O . X . . X , O . . O . 7 6 . . | $$ | . X O . O O . . . . . . . . . . O 9 . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I liked

in this game because I did not understand it. Having studied it a bit more, I still do not understand it. But my appreciation for Cho Chikun has increased.

does not just run. It threatens the Black group in the bottom right. :b33:

combines attack and defense. After :w34:

Black settles his group with sente.

FWIW, my impression is that Cho Chikun came out better than Kobayashi in the fuseki by making, except for the three space high pincer, quite ordinary looking plays. Go Seigen has criticized Cho Chikun for thinking a long time in the fuseki. Maybe he should take that back.

Bill Spight · **#15**

Game 3

A Go Seigen game, from the New Fuseki period.

Go Seigen (W) vs. Hasegawa Akira, 1934, 4.5 komi

Click Here To Show Diagram Code: [go]$$Wcm30 Go Seigen (W) vs. Hasegawa Akira, 1934, 4.5 komi $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . O . . . . . . X . 1 . 2 . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . X . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X X . . . . . . . . . . . . . . . | $$ | . . X O . . . . . . . . . . . . . . . | $$ | . . X O . . . . . . . . . . . . . . . | $$ | . . X O . . . . . , . . . . . , . . . | $$ | . . . X O B . O . . . . . X . X . . . | $$ | . . . X O . . . . . . 3 . . . . . . . | $$ | . . . . O . O . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X , . . . . . , . . O . . O . . . | $$ | . . . . X . O . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

is a probe. White plays it before Black is too strong outside. :b31:

secures the corner. Later, White will make use of the aji of :w30:

. After

White plays tenuki. :w32:

makes a large moyo.

cyclops · **#16**

I like

at the border of two moyo's. Better than my O12. I only can appreciate :w30:

if I know how W's continuations depend on :b31:

and why it has to be played now.

Bill Spight · **#17**

Game 4

Cho Chikun (W) vs. O Rissei, 2000, 5.5 komi

Click Here To Show Diagram Code: [go]$$Wcm30 Cho Chikun (W) vs. O Rissei, 2000, 5.5 komi $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . X . . . . . . . . . . . . . . . | $$ | . . X . . X O . . . . . . X . . . . . | $$ | . . . O . O . . . , . . . . . X . X . | $$ | . X . . . . O . . . . . . . . . . . . | $$ | . . O . . . . . . . . . . . O . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . O . . . | $$ | . . . X . . . . . . . . . . . . . . . | $$ | . . . . . . 4 . . . . . . . . . . . . | $$ | . . . X . . . . . . . . . . . . . . . | $$ | . . O 3 . . . . . . . . . . . O O . . | $$ | . . . . . . O . . . . . . . . O X . . | $$ | . . . O . . . 1 . , . . . . X , X . . | $$ | . . 2 . . X . . . . . . . . . X . . . | $$ | . . . X . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I like

because it is an apparently simple play, yet powerful and far sighted. It does not prevent Black from cutting off the White stones in the bottom left corner, but makes it unpleasant for Black to do so, while reducing Black's potential on the bottom side. :b31:

secures the corner and then White defends his stones and Black does likewise. Now :w30:

looks at both the bottom side and the center.

Uberdude · **#18**

Cho Chikun's opponent has all four corners!

skydyr · **#19**

Uberdude wrote:

Cho Chikun's opponent has all four corners!

It's clear why Cho Chikun won now. His opponent was black, after all.

Bill Spight · **#20**

Game 5

Satsugen's masterpiece

Honinbo Satsugen Meijin (W) vs. Inoue Shuntatsu, 1768, 2 stones, no komi

Click Here To Show Diagram Code: [go]$$Wcm29 Honinbo Satsugen Meijin (W) vs. Inoue Shuntatsu, 1768, 2 stones, no komi $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . X . . . . . . . . . . . . . . . | $$ | . . . , 0 . . . . , . . . . . X . . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , X . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . X . . . . . . . | $$ | . 7 X . . . . . . . . . . O . . . . . | $$ | . . . 4 . . . . . . . X X O . . . . . | $$ | . 5 3 . . . . . . . O . . O X . . . . | $$ | . . . X . 8 9 . . , O X . X O O O . . | $$ | . 6 . X . O . . O . O X . X X O . . . | $$ | . . 1 2 . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

invades Black's corner. 38 is a big point, but White cannot make things too easy for Black. :w33:

looks both ways. :b36:

is tesuji to guard against the push and cut with sente.

Interesting how many of these masterpiece games end in a small loss. It is not easy to give a strong player two stones.

Move 30

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