Doubt - Twisted Four

Could someone explain to me where is the so called “resiliency” in this situation from the Twisted Four article on Sensei’s?

White captures the stone and black can’t capture it back due to the ko rule. The right intersection has no liberties and is a suicide, so black will do something else. White comes back, places a stone on the right intersection and kills black. What am I missing?

Black now got two moves in a row somewhere else, possibly killing one of your groups, or breaking into an enclosed area.

Ko is better than just dieing.

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This is KO.

The rule is you can’t take the stone back immediately after your opponent captures it, but you could find a “ko threat,” which means playing somewhere else that threatens something white has to answer.

Then once white answers black somewhere else, black can again capture the stone back. Then it’s white’s turn to play somewhere that forces black to respond. Otherwise black can take the remaining white stone and make two solid eyes.

If white decides not to answer then yes it could kill this black group, but black gets to play another move elsewhere, usually punishing white for not responding and get some benefits.

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Oh ok, thanks. There is an implicit assumption that black can threaten white elsewhere on the board, forcing an urgent answer. Then black can retake the stone inside the twisted four and it’s white’s turn to be unable to recapture it immediately.

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Exactly. Ko is slightly more complex because you have to constantly judge whether answering somewhere else is more valuable than winning this ko, and count the number of ko threats you have that the opponent would have to answer.

Even if winning the ko is worth more than responding somewhere else, as long as you know you have more ko threats the opponent would have to answer, you should probably still answer elsewhere because you know you will win the ko eventually.

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About evaluation a rough estimate is that the value (in points) of what is at stake in a ko success will be halved, due to the fact that we proceed the game in a regular decreasing value of the moves and similarity between 2 consecutive ones.

So you may finish the ko when the double move (ko threat) somewhere is getting less as the ko itself

All this very roughly to get an idea of course

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