Author: Marc van Hal
Date: 15:35:47 04/17/03
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On April 17, 2003 at 13:12:58, Drexel,Michael wrote: >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 The same sort of problem was on the cover of the InterPolis chess tournament 1992 And I was confronted with it 5 years later again. Only in 1992 you had the change to win a prize for it. Marc
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