Author: F. Huber
Date: 13:30:38 03/08/04
Go up one level in this thread
On March 08, 2004 at 15:25:49, Kurt Utzinger wrote: >On March 08, 2004 at 14:13:12, Art Basham wrote: > >>[D]r4rk1/2p1b1p1/p3q3/np1p4/3P1BR1/2P2Q1P/P1B2P2/R6K w - - 0 1 >> >>I am pretty sure about this one! Of course the first move is the brilliant >>RxP ch!...Actually played by Lasker in 1909... >> >>However, Most of my programs do not see the mate until about move four...:-) > > > In my opinion there is again no mate in 9 or 10 moves. Required are > 16 or 17 moves I think. > Kurt > >[Event "Blitz:90'+30""] >[Site "MyTown"] >[Date "????.??.??"] >[Round "?"] >[White "New game"] >[Black "?"] >[Result "1-0"] >[SetUp "1"] >[FEN "r4rk1/2p1b1p1/p3q3/np1p4/3P1BR1/2P2Q1P/P1B2P2/R6K w - - 0 1"] >[PlyCount "33"] >[TimeControl "5400+30"] > >1. Rxg7+ Kxg7 2. Rg1+ Bg5 3. Rxg5+ Kf6 4. Rg6+ Ke7 5. Rxe6+ Kxe6 6. Qg4+ Ke7 7. >Qg7+ Rf7 8. Bg5+ (8. Qe5+ Kd8 9. Qxd5+ Ke7 10. Bg5+ Rf6 11. Bf5 Kf8 12. Bxf6 >Re8 13. Bg6 Re1+ 14. Kg2 Rg1+ 15. Kxg1 Nc6 16. Qf7#) 8... Kd6 9. Qxf7 Kc6 10. >Bf4 Rc8 11. Bf5 b4 12. Qd7+ Kb6 13. Qxc8 bxc3 14. Qxc7+ Kb5 15. Qc5+ Ka4 16. >Bc2+ Nb3 17. Bxb3# 1-0 Here´s another (shorter) solution by a mate solver: it´s a forced mate in 15, but maybe there´s still a shorter one - I´ve not yet fully checked it with ChestUCI. 1.Rg4-g7 Kg8-g7 2.Ra1-g1 Be7-g5 3.Rg1-g5 Kg7-f6 4.Bf4-d6 Kf6-g5 5.Bd6-e7 Kg5-h6 6.Be7-f8 Ra8-f8 7.Qf3-f8 Kh6-h5 8.Qf8-h8 Qe6-h6 9.Qh8-e5 Qh6-g5 10.Qe5-e8 Kh5-h4 11.Bc2-d1 Qg5-g1 12.Kh1-g1 Kh4-g5 13.Qe8-e6 Na5-c4 14.Ph3-h4 Kg5-f4 15.Qe6-g4# Regards, Franz.
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