Variations of Our Solution (IIIa)
No Early Kikashi
VAR (.1)
: ( 648aa) Please note that this move is played outside the Main Semeai, but does not lose a tempo therein, because becomes an approach-move liberty of White's group at the left. Black is still par with the Punishment Semeai Liberty Level. | |
Black is unable to continue with , or , in the left centre, because any of these moves would push him below the Punishment Semeai Liberty Level. Black is strictly bound to continue with the Main Semeai. Therefore, giving atari at is his only choice, because this move is the only one that also defends against White's cut at (which White will not play now; please refer to this subvariation 648of for details). White will connect at , providing Black with two Main Semeai Liberties. Now, Black is able to defend against White's cut at . We ask for your kind understanding that we felt unable to adjust the move numbers (i.e. to increase these by two) in the already created diagrams, which follow in this part of the variation tree. | |
: Black's atari is played outside the Main Semeai, and so loses a tempo therein. | |
: Again, her move is played outside the Main Semeai, but creates another approach-move liberty for her left hand group at C. White does not lose a tempo. | |
(Referenced by 648im) : Black's move is played outside the Main Semeai, and so loses a tempo, in principle. However, White's two approach-move liberties vanished with this move, so the net effect on the Main Semeai Liberties is plus one. | |
: Black is at nine Main Semeai Liberties now. Winning the ko will require two White moves at (capture), and at (connect). Both of White's approach-move liberties will become effective again, so the net effect on the Main Semeai is zero. Black, however, will lose a tempo in the Main Semeai by his connection at , should he be able to win the ko. Please note that - from now on - we will not update the board's border colour after moves that capture the ko in the left centre, as long as this ko fight is still active, and undecided. | |
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: ( A 648oa)
Counter-intuitively, connecting at is better for her. | |
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: (A 648ob) She might consider connecting the ko just now, but this will allow Black to win the Semeai Variation. : The points of lA and lB can be considered as a double-ko, | |
Black plays 1/2 reductions. Black will connect the ko at , White the ko at . Black will have to capture at before the end of the game. | |
Capture Variation: Compared to the superordinate variation ...
In total, White lost one point. White + 2 => White + 1 | |
Semeai Variation: Compared to the superordinate variation ...
In total, White gained five points. Black + 4 => White + 1 | |