On March 6 and 7, the 6th game of 56th Osho-sen between Osho Habu and Challenger Kisei Sato was held in Shizuoka-prefecture, Japan. Habu was a Sente(Black) player and the game ended because of Sennichite(repetetion) in 100 moves. You may replay the game and read comments in Japanese through this page. After a short rest, another 6th game started with exchanging their turn to play. Sato was a Sente this time and he won the game in 105 moves. You may replay the game ane read comments in Japanese through this page. After the game, the score is tied by 3-3. The winner of the 7th game on March 19 and 20 will become the winner of the 56th term.
The diagram above is the resignation diagram when he dropped his Pawn on 5f to prevent Gote(White, or upper side of the diagram)'s King from escaping toward Sente(Black, or lower side of the diagram)'s camp. Sato's King is still safe in Anaguma Gakoi(castle). Even if Gote had thousands of pieces in hand, there would be no mate for Sente's King. We call such a position "Zettai ni Tsumanai" in Japanese which means the position not to be mated absolutely. And we often call it "Z" for short. One of the sales points of Anaguma gokoi is "Z" which makes a player's reading easier and often enables him to concentrate on attacking in the endgame. Here is the possible variation after the diagram.
S*4d S*4e(!) Sx4e +B4c(mate)
R*4e S*5e K-5c +Bx6a Rx5e +B-4c(mate)
R*4e S*5e Rx5e Px5e Kx5e Rx5f(mate)
Gx7d S*5e K-6c +Bx6a N-8e G*5d K-7c Px7d K-8d Sx6d R*4h +Bx8c Kx8c P-7c+ K-8d G*8c(mate, replayable by clicking the arrow in a right direction under the diagram).
Gx7d S*5e K-6c +Bx6a S*5c +P-4c Rx3b +Px5c Kx5c G*4c K-5c S*5d(mate)
There might be more variations. But Gote would be hopeless in any case.
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