| Life In 19x19 http://www.lifein19x19.com/ |
|
| 19 point squeeze trick play http://www.lifein19x19.com/viewtopic.php?f=12&t=18401 |
Page 1 of 1 |
| Author: | Knotwilg [ Thu Oct 07, 2021 3:21 pm ] |
| Post subject: | 19 point squeeze trick play |
In my last game the opponent pulled the 19 point trick play on me but failed during the execution. In the review with KataGo I came across novel insights on the trick play: https://senseis.xmp.net/?NineteenPointTrickPlay |
|
| Author: | kvasir [ Thu Oct 07, 2021 4:01 pm ] |
| Post subject: | Re: 19 point squeeze trick play |
You show this on senseis's Without starting the engines I want to ask about the following diagram. |
|
| Author: | Knotwilg [ Fri Oct 08, 2021 12:00 am ] |
| Post subject: | Re: 19 point squeeze trick play |
Yeah, let's think a little without the engines  The question then is: can White avoid the squeeze? From the outside, Black wins the capturing race. I'll check later. Perhaps the answer here is that it's affordable to play this way and claim/attack the top on a large scale. |
|
| Author: | Knotwilg [ Fri Oct 08, 2021 2:50 am ] |
| Post subject: | Re: 19 point squeeze trick play |
The key move here seems to be  allowing to get out of the squeeze by setting up a ladder at  The corner becomes seki and the fighting may continue on either side. The result is fairly even. Note that an atari at A would disturb the seki and White would have to fill an outside liberty. In other words A is gote for White. It would be unwise for Black to play  here instead, for the corner will become an approach ko for Black.
|
|
| Author: | kvasir [ Sun Oct 10, 2021 11:22 pm ] |
| Post subject: | Re: 19 point squeeze trick play |
Looks legit but I'd point out that white has already gained 4-5 points with the hamate at this point. I have been looking at the only game I could find of pros playing this trick move, well it is a 2 stone handicap game with Shusaku taking black and avoiding the hamate in a way that losses ~3 pts. I find it interesting to consider which moves the computer considers to be bad in the standard "fall for it" line, that is how do we lose ~30pts playing like this. Using my arbitrary rule that bad move is >=1.5 pts loss, then      and  are bad. Notice how the last 4 black moves are bad, this is a pitfall for many diagrams, basically black keeps making mistakes after the first mistake. If is anyway bad, then we need to change that move but here we have given white a clear opportunity to go all-out in the fight. Starting an unpredictable fight must be a success for white when he plays a trick move in order to create any chance to win like in the Shusaku game. The only way to avoid the trick without compromising or allowing white to start a huge fight appears to be the traditional way. Btw, black has a more effective way to counter attack in the Shusaku game. |
|
| Page 1 of 1 | All times are UTC - 8 hours [ DST ] |
| Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/ |
|