Seki (関 勝寿)
@sekik.bsky.social
Professor of soil physics and hydrology.
https://sekika.github.io/toyo/en/
Maintaining feeds of Soil Science, Hydrology, 将棋, etc https://github.com/sekika/sekika/blob/main/bluesky/feed.md
JA/EN/FR
https://sekika.github.io/toyo/en/
Maintaining feeds of Soil Science, Hydrology, 将棋, etc https://github.com/sekika/sekika/blob/main/bluesky/feed.md
JA/EN/FR
no choice but Kf8
because if Kxf7 Qb3+ Ke8 Ng5 Rf8 Ne6 Qa5 Nxb7+ Kd8 Ne6+ Ke8 Nxf8
because if Kxf7 Qb3+ Ke8 Ng5 Rf8 Ne6 Qa5 Nxb7+ Kd8 Ne6+ Ke8 Nxf8
November 23, 2025 at 5:20 PM
no choice but Kf8
because if Kxf7 Qb3+ Ke8 Ng5 Rf8 Ne6 Qa5 Nxb7+ Kd8 Ne6+ Ke8 Nxf8
because if Kxf7 Qb3+ Ke8 Ng5 Rf8 Ne6 Qa5 Nxb7+ Kd8 Ne6+ Ke8 Nxf8
Kg2 Rh4 Kg3 then wherever Rook moves, white can get it by forking
November 23, 2025 at 2:12 AM
Kg2 Rh4 Kg3 then wherever Rook moves, white can get it by forking
Be2 c1=Q+ Nb1+ Kb4 ...?
November 21, 2025 at 11:24 AM
Be2 c1=Q+ Nb1+ Kb4 ...?
Kg2 Kg4 Rg7+ Kf5 Rxh3
November 19, 2025 at 12:35 PM
Kg2 Kg4 Rg7+ Kf5 Rxh3
Qh5+ Kd7 Qxf5+ Ke8 Qxh7
November 18, 2025 at 2:21 PM
Qh5+ Kd7 Qxf5+ Ke8 Qxh7
Ng5+ Kg8 Qxg7+ Kxg7 Ne6+ Kg8 Nxc7
November 18, 2025 at 1:44 PM
Ng5+ Kg8 Qxg7+ Kxg7 Ne6+ Kg8 Nxc7
I just prevented Rxa7
Rb1 would be better
Rb1 would be better
November 14, 2025 at 5:01 PM
I just prevented Rxa7
Rb1 would be better
Rb1 would be better
no because if Nxd5 Bxb5#
November 14, 2025 at 4:51 PM
no because if Nxd5 Bxb5#
Bxh7+ Kxh7 Qh5+ Kg8 Bxg7 Kxg7 Qg5+ Kh8 Rc3
November 9, 2025 at 4:52 PM
Bxh7+ Kxh7 Qh5+ Kg8 Bxg7 Kxg7 Qg5+ Kh8 Rc3
Nxe4 dxe4 Bxf2 Ke2 Bg4+ Kxf2 Qxd1
November 8, 2025 at 1:59 PM
Nxe4 dxe4 Bxf2 Ke2 Bg4+ Kxf2 Qxd1
Qe8+ Bxe8 Rxe8+ Kd1 Be2+ Ke1 Bg4+ Kf1 Bh3+ Kg1 Re1#
November 8, 2025 at 1:51 PM
Qe8+ Bxe8 Rxe8+ Kd1 Be2+ Ke1 Bg4+ Kf1 Bh3+ Kg1 Re1#
Qa5+ Kd1 Bb3+ Kc1 Qe1#
November 6, 2025 at 4:48 AM
Qa5+ Kd1 Bb3+ Kc1 Qe1#
Re1+ Rb1 Rc1 Rxc1 Kxc1 h5 gxh5 g4 h6 g3 h7 g2 h8=Q#
November 4, 2025 at 1:30 PM
Re1+ Rb1 Rc1 Rxc1 Kxc1 h5 gxh5 g4 h6 g3 h7 g2 h8=Q#
Nf5 Kg8 Nh6+ Kh8 Bf6#
November 2, 2025 at 12:41 PM
Nf5 Kg8 Nh6+ Kh8 Bf6#
e6 hxg4 e7 g3 e8=Q g2 Qd1 g1=Q Qxg1 1/2-1/2 ?
November 2, 2025 at 12:37 PM
e6 hxg4 e7 g3 e8=Q g2 Qd1 g1=Q Qxg1 1/2-1/2 ?
Qf4+ Ke2 Qf2+ Kd3 Nb4+ Kxe4 Qf4#
October 31, 2025 at 7:37 PM
Qf4+ Ke2 Qf2+ Kd3 Nb4+ Kxe4 Qf4#
Bxf2+ Kh2 Qxg3+ Kh1 Bb2+ Nxg2 Qh3#
October 31, 2025 at 4:07 AM
Bxf2+ Kh2 Qxg3+ Kh1 Bb2+ Nxg2 Qh3#
c5 Nc8 Be6+ Bf7 Rxf7 Rxf7 Rf1
October 29, 2025 at 4:16 PM
c5 Nc8 Be6+ Bf7 Rxf7 Rxf7 Rf1