Author: Marc van Hal
Date: 15:48:02 04/18/03
Go up one level in this thread
On April 17, 2003 at 20:38:21, Drexel,Michael wrote: >On April 17, 2003 at 18:35:47, Marc van Hal wrote: > >>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 > >I dont want to win a prize for it. >There are two mates at the end and I think this is considered as uggly by the >Chess Problem experts. >I like it nevertheless because the qeen has to go from d4 to h8 and back in the >same manner. A nice Zigzag theme. >I dont know if someone else has discovered exactly the same position before, >because its not difficult to find it. >Just had the idea to put a knight at h1 and I was almost there. It was not the same postion but the same theme without the knight and in that postion there was only one solution. Marc
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