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Sente Vs Gote Which To Play/ Discussion
Sub-page of SenteVsGoteWhichToPlay

Table of contents Table of diagrams
White to play and win
A white victory
White slips
Almost
Jigo
White to play and win

Questions and comments go here.

Tom:Interesting page Bill! I think it would benefit from having an explicit statement to say that there are no worthwhile plays elsewhere on the board, or tenuki is not an option, or something like that. I guess that is what you mean :)

Bill: Thanks, Tom. :-) I'll edit the intro.


--Funkybside: I have a question; At what (IGS equivilant) rank are players begining to think this deeply about the endgame? (I sure don't do this and can play up to ~4k IGS players and still have a reasonable chance at winning.) Thanks for any comments.


Bill: For those who may want to do some analysis:

Problem 1

[Diagram]
White to play and win

Enjoy!


[Diagram]
A white victory

I'm very new at endgame analysis, but my 7k mind sees this as best for both players, giving a 1 pt win for White. I can't determine the value of W1...I just don't understand miai counting when it comes to sente and gote enough. Anyways B2 is a big gote move, somewhere arond 6 points miai, I think. The outlying stone in the formation confuses the count a bit, though, and eventually requires B4. W3 is a 4.5 point gote, B4 a 1 point gote, and W5 a .5 gote. W gets tedomari, and wins by 1 point.


[Diagram]
White slips

If W plays W1 first, B gets to B2 first, and the result comes up jigo.

I wish I could analyse these situations better than this. Can someone help me out with the exact values of W1 and B2 in the first diagram? Thanks! ~Alex Baxter



Bill: Thanks for jumping in, Alex. :-)

[Diagram]
Almost

You got the main idea right, but missed a minor detail. W5 is a mistake.


[Diagram]
Jigo

Black can throw in with B6, taking away a potential White liberty, and then White must protect with W9. Result: Jigo.

W5 must be at W8, which is a double sente at that point.

One nice thing about more realistic problems: They can easily have more than one point. :-)

I'll work out the values of plays later.

Related problem

[Diagram]
White to play and win


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