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Costly Atari
Path: ForcingAndInitiative · Prev: MutualForcingMoves · Next: VirtualKoThreat Sometimes you need to play your kikashi while you can. But sometimes it is aji keshi or entails a direct loss. One common mistake is to atari a first-line hane when you are going to tenuki.
Here is an example from Rob van Zeijst's column in the
Giving 2 points komi, Black loses by 1 point. But Black's atari at 5 in the first diagram is a mistake. Black can salvage jigo if he does not play atari.
The difference is that Black has not sacrificed a stone in the top right corner. The extra point gives Black a tie. What about White's earlier atari? Was it a mistake, too?
After Black 9 White has a dilemma. Maybe the best thing is to protect the corner.
But after Black 2 White is plainly lost. If White continues to mirror with White 1:
White 3 protects the corner. White 7 is tesuji. If Black 8 captures at a, White plays at b.
Black 2 makes seki. Now White suffers a big loss.
White can try White 1, but Black 8 is tesuji to kill White's corner stones.
White 1 is tesuji. Black 2 is a mistake. If Black prevents the seki, White makes a ko and wins.
So White's early atari seems necessary to prepare for the atari with sente when Black cuts. Two similar ataris, one right, one wrong. Go is not a very easy game. :-) -- BillSpight Path: ForcingAndInitiative · Prev: MutualForcingMoves · Next: VirtualKoThreat This is a copy of the living page "Costly Atari" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |