Author: Drexel,Michael
Date: 10:12:58 04/17/03
Go up one level in this thread
On April 17, 2003 at 13:02:01, Drexel,Michael wrote:
>[D] 8/8/8/8/8/3Q4/pp1KPPP1/k6n w - - 0 1
>
>White to move and mate in 21
>
>A strong human chessplayer should be able to find it easily.
>The solution will follow in the next post.
>
>You might try to find the solution on your own.
>
>Happy solving!
>
>Michael
My problem is derived from the well known Chessproblem from B.Barrett below,
It is not a challenge for most Chessprograms today.
My problem is.
[D] 8/8/8/8/8/8/ppQKPPP1/k7 w - - 0 1
Mate in 12
Barett 1874
Here is the solution in pgn:
[Event "?"]
[Site "?"]
[Date "2003.04.17"]
[Round "?"]
[White "Mate in 21"]
[Black "?"]
[Result "1-0"]
[Annotator "Drexel,Michael"]
[SetUp "1"]
[FEN "8/8/8/8/8/3Q4/pp1KPPP1/k6n w - - 0 1"]
[PlyCount "41"]
1. Qd4 Kb1 2. Qe4+ Ka1 3. Qe5 Kb1 (3... Nxf2 4. Kc2 Nd1 (4... Nd3 5. Qc3 Nb4+ (
5... Ne1+ 6. Kb3 Nd3 7. exd3 Kb1 8. Qxb2# (8. Qe1#)) 6. Kb3 Nd3 7. exd3 Kb1 8.
Qxb2#) 5. Kb3 Kb1 6. Qe4+ Ka1 7. Qd4 Nc3 8. Qxc3 Kb1 9. Qxb2# (9. Qe1#)) 4.
Qf5+ Ka1 5. Qf6 Kb1 (5... Nxf2 6. Kc2 Nd1 (6... Nd3 7. Kxd3 Kb1 8. Qf1#) 7. Kb3
(7. Kxd1 $2 Kb1 8. Qf5+ Ka1 9. Qe5 Kb1 10. Qe4+ Ka1 11. Qd4 Kb1 12. Qd3+ Ka1
$11) 7... Kb1 8. Qf5+ Ka1 9. Qe5 Kb1 10. Qe4+ Ka1 11. Qd4 Nc3 12. Qxc3 Kb1 13.
Qxb2# (13. Qe1#)) 6. Qg6+ Ka1 7. Qg7 Kb1 (7... Ng3 8. Kc2 Nxe2 9. Qxb2#) (7...
Nxf2 8. Kc2 Nd1 (8... Nd3 9. Qc3 Nb4+ (9... Ne1+ 10. Kb3 Nd3 11. exd3 Kb1 12.
Qxb2# (12. Qe1#)) 10. Kb3 Nd3 11. exd3 Kb1 12. Qxb2# (12. Qe1#)) 9. Kb3 Kb1 10.
Qg6+ Ka1 11. Qf6 Kb1 12. Qf5+ Ka1 13. Qe5 Kb1 14. Qe4+ Ka1 15. Qd4 Nc3 16. Qxc3
Kb1 17. Qxb2# (17. Qe1#)) 8. Qh7+ Ka1 9. Qh8 Nxf2 (9... Ng3 10. fxg3 Kb1 11.
Qh1#) 10. Kc2 Nd1 11. Kb3 $1 (11. Kxd1 $2 Kb1 12. Qh7+ Ka1 13. Qg7 Kb1 14. Qg6+
Ka1 15. Qf6 Kb1 16. Qf5+ Ka1 17. Qe5 Kb1 18. Qe4+ Ka1 19. Qd4 Kb1 20. Qd3+ Ka1
21. Qc3 Kb1 $11) 11... Kb1 12. Qh7+ Ka1 13. Qg7 Kb1 14. Qg6+ Ka1 15. Qf6 Kb1
16. Qf5+ Ka1 17. Qe5 Kb1 18. Qe4+ Ka1 19. Qd4 Nc3 20. Qxc3 Kb1 21. Qxb2# (21.
Qe1#) 1-0
Michael
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