Variations of Our Solution (IIIa)
No Early Kikashi
VAR (.1)
: ( 648gm) In principle, Black loses two Main Semeai Liberties by this move. But becomes an approach-move liberty of his group, so the net effect of this move is a loss of one Main Semeai Liberty. | |
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: Here in this line, however, Black already lost two of his potential ko threats by playing some of his own kikashi (, ) "early", compensating for our technical mistake mentioned above. : 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 . | |
: Black lost his third potential ko threat by his just played kikashi , in the lower left, so it does not make sense to start Dany's Ko with the atari at , instead. | |
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Black plays 3/3 reductions. | |
Capture Variation: Compared to the superordinate variation ...
In total, gains and losses compensate for each other. White + 2 => White + 2 | |
Semeai Variation: Compared to the superordinate variation ...
In total, Black lost six points. Black + 4 => White + 2 | |