This is the copy of my comments on the 2nd game of 51st Oui-sen best of seven match between Fukaura and Hirose I posted 81-SU forum linked below.
Fukaura won the 2nd game in 135 moves.
The moves I felt impressive were Fukaura's 75.▲S*3c, 83.▲L*4c and 87.▲+R-4b. I think Fukaura built the winning position with these moves which didn't look so tactical or brilliant at a glance. After the game, Hirose suggested that 38.△P-4e would have been better than the actual 38.△P-6d. This means he could have prevented the Pawn trade on 3e by △S-4d if Fukaura transferred his Rook to 3h like the actual proceeding. It's not good to allow Fukaura to have two pawns in hand by trading pawns on the 3rd file since Fukaura's Rook worked better than Hirose's one after that.
Some mate lines after the resignation are followings;
(1)△K-7a ▲P*7b △Bx7b ▲S-8b= △K-6b ▲+B-7c(mate)
(2)△K-7a ▲P*7b △Rx7b ▲Sx7b+ △Kx7b ▲R*7c △K-6b ▲N-6a+ △Kx6a ▲Rx6c+ △L*6b ▲B*7b △Kx7a ▲S-8a+(mate)
(3)△K-7a ▲P*7b △Rx7b ▲Sx7b+ △Kx7b ▲R:7c △K-8b ▲Rx6c+ △K-9b ▲+R-7b(mate)
(4)△K-7a ▲P*7b △Rx7b ▲Sx7b+ △Bx7b ▲S-8a+ △Kx8a ▲R*9a(mate)
(5)△K-7a ▲P*7b △Rx7b ▲Sx7b+ △Bx7b ▲S-8a+ △Bx8a ▲R*6a △K-7b ▲P*7c △K-8b ▲R-6b+ △L*7b ▲Px7b+ △K-9b ▲+P-8b(mate)
(6)△K-7a ▲P*7b △Rx7b ▲Sx7b+ △Bx7b ▲S-8a+ △Bx8a ▲R*6a △K-7b ▲P*7c △K-8b ▲R-6b+ △K-9a ▲P-7b+ △K-9b ▲+B-8b(mate)(7)△K-7a ▲P*7b △Rx7b ▲Sx7b+ △Bx7b ▲S-8a+△K-6b ▲N*7d △K-6c ▲R*7c(mate)
You can replay the game here. Fukaura tied the score in 1-1.
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