BT2630 test 12

[jdart]

I have noticed that besides the published solution Qe4, Qf5 is a mate also:
[pgn]
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "8/pp3k2/2p1qp2/2P5/5P2/1R2p1rp/PP2R3/4K2Q b - - 0 1"]
[PlyCount "37"]

{[#]} 1... Qf5 {Stockfish 10 64 BMI2: 1)} 2. Rexe3 ({Stockfish 10 64 BMI2: 2)}
2. Rxb7+ Kg6 3. Rd7 Qxd7 4. Qe4+ f5 5. Qxe3 Rxe3 6. Rxe3 h2 7. Rg3+ Kf6 8. Rh3
Qg7 9. Rxh2 Qg1+ 10. Kd2 Qxh2+ 11. Ke3 Qg3+ 12. Ke2 Qxf4 13. a3 Qe4+ 14. Kd2 f4
15. b3 f3 16. a4 f2 17. Kc3 f1=Q 18. b4 Qed3+ 19. Kb2 Qfb1# {-#18/71}) 2...
Rxe3+ 3. Rxe3 Qb1+ 4. Kf2 Qxh1 5. Re1 Qxe1+ 6. Kxe1 h2 7. f5 h1=Q+ 8. Ke2 Qg2+
9. Ke3 Qxb2 10. a4 Qb3+ 11. Kf2 Qxa4 12. Ke2 Qe4+ 13. Kf2 Kg7 14. Kg3 Qe2 15.
Kh3 Qf2 16. Kg4 Kf7 17. Kh3 Qg1 18. Kh4 Qg2 19. Kh5 Qg5# {-#18/71} *[/pgn]

[Paloma]

what was the published solution?

edit: ah, Qe4

[Jouni]

Example of really bad test position, when there are 6 winning moves including weird looking Kf8 :

Analysis by Crystal 270819 64 BMI2:

1. -+ (-#15): 1...Qe4
2. -+ (-#25): 1...Qf5
3. -+ (-8.68): 1...b5
4. -+ (-8.57): 1...Qg4
5. -+ (-8.32): 1...b6
6. -+ (-8.13): 1...Kf8

[MikeB]

Example of really bad test position, when there are 6 winning moves including weird looking Kf8 :

Analysis by Crystal 270819 64 BMI2:

1. -+ (-#15): 1...Qe4
2. -+ (-#25): 1...Qf5
3. -+ (-8.68): 1...b5
4. -+ (-8.57): 1...Qg4
5. -+ (-8.32): 1...b6
6. -+ (-8.13): 1...Kf8

Code: Select all

30	  #14 	162.8M	0:02.48	Qe4 Rexe3 Qxh1+ Kd2 Rg2+ Re2 Rxe2+ Kxe2 Qg2+ Ke3 h2 Rxb7+ Kg6 Rb8 Qh3+ Kd2 h1=Q f5+ Kxf5 Rd8 Q3g2+ Kd3 Qxb2 Re8 Qf3+ Re3 Qd5#