The day before yesterday Sato won the second game of 33rd Kio-sen 3-wins match with Challenger Habu(2 crowns) in 133 moves. The score was tied at 1-1. Sato was Sente player. The opening strategy of the game was Gote's Gokigen Nakabisha(central Rook). Sato traded Bishops at the seventh move which is called Maruyama Vaccine since Maruyama (9 dan) used to beat Gokigen Nakabihsa with this bishop trade. They say Habu had winning position up to the 123th move. I think S*7f instead of S*8g at the 124th move would have been better since Gote's King was not in threatmate at that time.
The diagram below is the resignation one. The possible variations after that position would be as followings;
Px9e Kx9e P*9d Kx9d B*6a S*8c Bx8c Px8c+ K-8a B*9b Lx9b +Px9b Kx9b G*8b (mate, replayable by clicking the arrow in the right direction under the diagram)
Px9e Kx9e P*9d Kx9d K-8a P*9b Lx9b P*9c Lx9c Nx9c= K-7a G*7b(mate)
S*8g Gx8g Nx8g+ G*8b(mate)
S*8b S*9c Sx9c G*8c K-8a S-7b+(mate)
There would be more variations, but Gote was hopeless in any cases.
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