Yancey_Ward
This is a different kind of puzzle than you normally see on Susan's site, though the idea is an old one in chess compositions. The goal here is to find white's moves that force black to mate in 3. Some people have difficulty understanding the concept, but it is good exercise for your brain. Basically, white uses checks that black must respond to, the end result of which is that white is mated by black by the forced reply.
1.Nf8 Re5
2.Qf2+ Nxf2
3.Rxf6+ Kxf6#
Editor
Crocodile, no even after 1. ..Re5, white can still force self-mate in 3, but the second move isn't 2.Ng3- it is another check at move 2.
After 1.Nf8 Te5! 2. Ng3+ Kf4+!! ..... there is no mate in 3 moves
aaaahhhh! thx
Interesting that now it looks easy kk
1.Nf8! any move
2.Ng3+ Kf4
3.Ng6+ fxg6#
XadrezExplorer
I found a solution but it's not in 3...B × e4+ R × e4 Ng3+ Kf4 Rf1+ Nf2 Ne2+ Kf5 g4+ R × g4 Qd3+ Re4 Ng3+ Ke5 Re6+ f × e6#
Editor
The first move is not a check- but is threatens 2.Ng3+.
Last try: 1 Qxe4+ Rxe4 2 g4+ Ke5 3 Re6+ fxe6#
Actually, black isn’t forced to play Kxe5 on his 2nd move
I guess my solution is also wrong, because black isn’t forced to play Rxe4
How about 1 Bxe4+ .. Rxe4. 2 Qe5+ .. Kxe5. 3 Re6+.. fxe6#
4..fxe6+ 5. Kg4 is not even a mate :(
I tried for a long time, and still nothing. 1. Qxe4+ Rxe4 2. g4+ Ke5 3. Re6+
doe not work because of 3...Kxd5.
I also found 1.Bxe4+ Rxe4 2.g4+ Rxg4 3.Qxg4+ Ke5 4. Qe6+ fxe6++ , but it is on 4 moves.
Can someone please post a hint? I'm curious
Editor
Also, Alena, just as a note- not all of white's moves have to be checks in self-mate- just like normal mating compositions, the hardest self-mates will have quiet moves at the beginning or elsewhere in the line.
Editor
No, Alena- afer 2.Ng3+, black can extend it by playing 2. ....Kf4. You are wrong right from the start- there is one unique solution at move 1 for white that forces self-mate in 3.
1.Qxe4+ Rxe4
2.Ng3+ Ke5
3.Re6+ fxe6#
