2014年10月23日木曜日

The final game of the Ouza Title Match

The 5th-game of The Ouza Title Match between Habu and Toyoshima has been in progress today. So far the score is in a tie, 2 to 2. The winner of this game is able to win the Ouza Title.

http://live.shogi.or.jp/ouza/kifu/62/ouza201410230101.html

Side Pawn Picker, Bishop-33 Strategy has been played, which is one of the most popular strategies among pro players, especially among young pro players. This is because it wins over 50% these days in spite of first-mover advantage. Generally, in Shogi, as in Chessfirst-mover advantage exists certainly. Sente has been winning about 52% in all pro games, and this tendency is particularly strong in top title games. Thus, gote relatively tends to choose the strategy which has a higher winning rate.


Diag.1

Bumping the rook with △R-24 after advancing the silver to 23 is the tactical move discovered recently. In this position, sente cannot take the rook because there is no place to drop it in gote's camp after the exchange. On the other hand, gote can drop it on 27 and 28 to make a promoted rook. However, depending on the situation, it's possible to take the rook on 24 e.g. In case of ▲K-58, ▲S-48, ▲G-38, there is also no square to drop it in sente's camp. In fact, Habu has played this line in his games.

From Diag.1, it proceeded with ▲P*25 △R-74 ▲S-37 △K-62 (Diag.2)


Diag.2

△K-62 is also the move which is often seen recently and has never played before, as well as △R-24. The aim is to go away from the opponent's rook and to build a Mino castle. If opened fire from 2nd or 3rd file in the future, gote would be able to play more offensive than the king being on 52. These two moves are in fashion in Side Pawn Picker.


Diag.3

The current position is at Diag.3. It's still in the middle game. Perhaps piece-building will continue for a while. I suppose sente will form the castle better, such as Yagura or Silver Crown, and attempt to oppress the rook on 74 little by little. 





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