On September 7, the first game of 55th Ouza-sen between Ouza Habu and Kubo 8 dan was held in Tokyo, Japan. As a result of Furigoma, Kubo became Sente player. Habu won it in 104 moves. Ouza-sen is 3-wins game. The second game will be held on September 22.
The diagram above is at the resignation when Habu drew back his King to 6b. After the diagram, Gote's King will not be mated while Sente's King is in Hisshi. Here are the possible variations;
S*6c K-5a +Bx6a K-4b(!) +B-5b K-3b R-6h G*2h Rx2h Sx2h+ Kx2h Rx8h+ S*3h +Rx3h Kx3h R*4h K-2i G*2h(mate, replayable by clicking the arrow in the right direction under the diagram)
S*6c K-5a +Bx6a K-4b(!) +B-5b K-3b G*2i B*2h Gx2h Sx2h+ Kx2h N*1f K-3h G*4h K-2i G*2h(mate)
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