Author: Vincent Lejeune
Date: 19:25:35 12/31/03
Go up one level in this thread
I downloaded the KBBBKN just for fun :) Hiarcs 9 announce mate in 71 in less than 1 sec n5Kn/8/7k/B6n/8/2B5/2Bq4/4q3 w - - 0 1 Analysis by Hiarcs 9: 1.Fxd2+ Cf4 2.Fxf4+ Rh5 ² (0.63) Profondeur: 1/7 00:00:00 1.Fxd2+ Cf4 2.Fxf4+ Rh5 ² (0.63) Profondeur: 2/8 00:00:00 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 ² (0.63) Profondeur: 3/8 00:00:00 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 +- (2.83) Profondeur: 4/9 00:00:00 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 Rxf4 +- (3.46) Profondeur: 4/11 00:00:00 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 Rxf4 +- (4.83) Profondeur: 5/11 00:00:00, tb=2 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 Rxf4 +- (#71) Profondeur: 5/11 00:00:00, tb=6 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 5/15 00:00:00 1kN, tb=6 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 6/17 00:00:00 4kN, tb=9 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 7/17 00:00:00 5kN, tb=9 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 8/17 00:00:00 5kN, tb=9 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 9/17 00:00:00 9kN, tb=9 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 10/17 00:00:00 19kN, tb=9 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 11/17 00:00:00 36kN, tb=12 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 12/19 00:00:00 83kN, tb=24 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 13/19 00:00:00 184kN, tb=34 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 14/23 00:00:01 335kN, tb=79 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 15/23 00:00:01 660kN, tb=124 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 16/27 00:00:03 1422kN, tb=344 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 17/29 00:00:05 2636kN, tb=872 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 18/31 00:00:09 5240kN, tb=2441 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 19/34 00:00:16 9773kN, tb=4711 1.Fxd2+ Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 +- (#71) Profondeur: 20/35 00:00:47 23726kN, tb=27218 After 1.Bxb2+, the 3 best moves are : n5Kn/8/7k/B6n/8/8/2BB4/4q3 b - - 0 1 Analysis by Hiarcs 9: 1. +- (#70): 1...Cf4 2.Fxf4+ Rh5 3.Fxe1 Rg4 4.Rxh8 2. +- (#67): 1...Dxd2 2.Fxd2+ 3. +- (#16): 1...De3 2.Fxe3+ I hope we will have soon the KPPKPP and the KPPPKP files and many of long long mate announcements ! On December 30, 2003 at 14:48:10, Brian Katz wrote: >On December 30, 2003 at 14:27:01, Brian Katz wrote: > >>Do any programs out there find mate in less than 80 moves? >> >>The winning idea after winning black’s queens, is to corral the Knights, win two >>of them, and then get into a K+B+B vs K+N 5 piece Tablebase endgame, which in >>some positions, require at least 74 moves. Perhaps more. >>If you don't have the 5 piece Tablebases, your program probably will not find >>mate. You will need at least the 5 piece endgame mentioned above. >> >>You may need to set the Tablebase Depth to a setting of 0 rather than the >>Default setting of 3. >> >>[D]n5Kn/8/7k/B6n/8/2B5/2Bq4/4q3 w >> >>Analysis by Fritz 8: Tablebase Depth set at 0. >>Hardware: AMD Athlon XP 2600+ 1 Gig DDR SDRAM >> >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Nd5 5.Bb3 Ne7 6.Beg3 >> +- (7.22) Depth: 7/12 00:00:00 18kN, tb=45 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Nd5 5.Bb3 Ne7 6.Beg3 >> +- (7.22) Depth: 8/14 00:00:00 26kN, tb=46 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Nd5 5.Bb3 Ne7 6.Beg3 >> +- (7.22) Depth: 9/16 00:00:00 42kN, tb=71 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Kg4 5.Be4 Nd5 6.Bxd5 Kxf4 >> +- (7.22) Depth: 10/21 00:00:00 88kN, tb=220 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Kg4 5.Be4 Nc4 6.Beg3 Kh5 7.Kg7 >> +- (7.28) Depth: 11/21 00:00:00 197kN, tb=529 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Kg4 5.Bf2 Nd5 6.Bb3 Nc3 7.Be6+ Kf3 >>8.Be5 >> +- (7.28) Depth: 12/23 00:00:00 467kN, tb=1594 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Kg4 5.Bf2 Nd5 6.Be5 Kf3 7.Bfd4 Ne3 >>8.Bd3 >> +- (7.31) Depth: 13/25 00:00:00 1018kN, tb=4800 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Kg4 5.Bf2 Nd5 6.Be5 Kf3 7.Bfd4 Ne7 >>8.Bd3 Nd5 >> +- (7.41) Depth: 14/26 00:00:02 2134kN, tb=11604 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Kg4 5.Bf2 Nd5 6.Be5 Kf3 7.Bfd4 Nb4 >>8.Bf5 Nd5 9.Kg7 >> +- (7.44) Depth: 15/29 00:00:04 4887kN, tb=31168 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Kg4 5.Bf2 Nd5 6.Be5 Kf3 7.Bfd4 Nb4 >>8.Bf5 Nd5 9.Kg7 Nf4 >> +- (7.50) Depth: 16/29 00:00:09 10238kN, tb=72603 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Kg4 5.Bf2 Nc4 6.Be4 Nb2 7.Bd4 Nc4 >>8.Kg7 >> +- (7.56) Depth: 17/32 00:00:25 26904kN, tb=234367 >>1.Bxd2+! >> +- (7.84) Depth: 18/33 00:00:34 36314kN, tb=355809 >>1.Bxd2+! >> +- (8.13) Depth: 18/35 00:00:54 57493kN, tb=596406 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Ba5 Nd7 5.Kxh8 Nc5 6.Bb6 Nd7 7.Kg7 Kg4 >> +- (8.16) Depth: 18/35 00:01:02 66117kN, tb=688821 >>1.Bxd2+! >> +- (8.44) Depth: 19/37 00:01:09 73772kN, tb=767130 >>1.Bxd2+! >> +- (8.72) Depth: 19/37 00:01:10 74411kN, tb=798334 >>1.Bxd2+! >> +- (9.28) Depth: 19/37 00:01:12 76918kN, tb=865923 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Ba5 Nc4 5.Kxh8 Kg4 6.Bd1+ Kf5 7.Be2 Nb2 >>8.Bc1 Na4 9.Ba3 Ke4 10.Bd1 >> +- (9.59) Depth: 19/40 00:02:17 156703kN, tb=1772123 >>1.Bxd2+! >> +- (9.88) Depth: 20/39 00:02:28 168406kN, tb=1892491 >>1.Bxd2+! >> +- (10.16) Depth: 20/39 00:02:30 171306kN, tb=1973122 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Ba5 Nc4 5.Kxh8 Kg4 6.Bac7 Kf3 7.Bc1 Ke2 >> +- (10.22) Depth: 20/39 00:04:10 291849kN, tb=3152989 >>1.Bxd2+! >> +- (10.50) Depth: 21/37 00:04:33 317648kN, tb=3419102 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Kg4 5.Ba5 Nc4 6.Bac7 Kf3 7.Bc1 Ke2 >>8.Be4 >> +- (10.56) Depth: 21/40 00:09:02 634177kN, tb=7029727 >>1.Bxd2+! >> +- (10.84) Depth: 22/39 00:09:45 683693kN, tb=7568689 >>1.Bxd2+! >> +- (11.13) Depth: 22/39 00:09:52 691043kN, tb=7790120 >>1.Bxd2+! >> +- (11.69) Depth: 22/39 00:09:53 692672kN, tb=7915129 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Kg4 5.Ba5 Nd7 6.Bd8 >> +- (#80) Depth: 22/42 00:15:05 1096525kN, tb=12784411 >>1.Bxd2+ Nf4 2.Bxf4+ Kh5 3.Bxe1 Nb6 4.Kxh8 Kg4 5.Ba5 Nd7 6.Bd8 >> +- (#80) Depth: 22/42 00:15:24 1119467kN, tb=12908527 >> >>(Katz, Eatontown 30.12.2003) >> >>Brian > >In addition to the above analysis, if Black recpaptures on d2 with it's Queen on >the Bishop checks on d2, >with: 1.Bxd2+ Qxd2 2.Bxd2+ Nf4 3.Bxf4+ Kh5 4.Kxh8..., > >the K+B+B vs K+N endgame will be reached, with a mate in 67 to follow. The h8 >Knigth will hang, resulting in the 5 piece endgame mentioned, seeing that, Fritz >8 prolongs mate by not recapturing on d2 with it's Queen. > >Brian
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