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recently posted.
1. c7! Kb7
2. Nc5+ Kc8
3. g4!!
and black is in zugzwang.
1. c7 Kb7 2. Nc5+
(a)
if 2 … Kxc7 then 3. Ne6+, black lost a rook.
(b)
if 2 … Rxc5 3. Kxc5 Kxc7 4. Kd5 Kd7 5. Ke5 Ke7 6. h4 Kf7 7. g4 Ke7 8. g5 Kf7 9. Kd6 Kg7 10. Ke6, white has an easy win.
(c)
if 2 … Kc8 3. g4 Rxc5 4. Kxc5, same as (b).
1. c7 Kb7
2. Nc5+ Kxc7
3. Ne6+ winning the R
1. c7 Kb7
2. Nc5+ Kc8
3. g4 Rxc5
4. Kxc5 white winning
1. c7 Kb7
2. Nc5+ Kc8 (Kxc7 Ne6+)
3. g4!
is beautiful xugxwang!
3. … Rxc5 (only move)
4. Kcc5 Kxc7
and white wins the endgame.
The pawn on c6 saves the day. After
1.c7! Kb7
2. Nc5+ Black cannot take the pawn because of the fork Ne6+. So
2. … Kc8
3. g4! Zugzwang. Black is out of moves.
1.c7 Kb7 2.Cc5+ Rc8 3.g4!Zugzwang Rxc5 4.Kxc5 Kxc7 5.Rd5 Rd7 6.Ke5 Ke7 7.h4 Kf7 8.Kd6 Kf6 9.g5+ Kf5 10.Ke7 Kg4 11.Kf6 Kh5 12.Kf7 Kxh4 13.Kxg6 …
1.c7 Kb7
2.Nc5+ Rxc5
(2. The pawn cannot be taken for e.g. ..Kxc7 3.Ne6+ Kd7 4.Nxg5 Kd6)
(2…Kc8 3.g4 Kxc7 4.Ne6+ Kd7 5.Nxg5 Kd6)
3.Kxc5 Kxc7
4.Kd5 Kd7
5.Ke5 Ke7
6.g4 Kf7
7.h4 g5 8.h5
1Nf5 wins
Check!, then move the peon forward