Author: Uri Blass
Date: 03:26:00 09/24/01
Go up one level in this thread
On September 24, 2001 at 06:02:20, Ed Schröder wrote: >On September 24, 2001 at 01:49:35, Michel Langeveld wrote: > >>another solution found? >> >>====================================================================== >>! ECM.1617 ! >>====================================================================== >> >> +---+---+---+---+---+---+---+---+ >> 8 | *R| *N| | | | *R| *K| | >> +---+---+---+---+---+---+---+---+ >> 7 | *P| *P| | *B| *P| *P| *B| *P| >> +---+---+---+---+---+---+---+---+ >> 6 | | *Q| *P| | | | *P| | >> +---+---+---+---+---+---+---+---+ >> 5 | | | | | P | | N | | >> +---+---+---+---+---+---+---+---+ >> 4 | P | P | | P | B | | | | >> +---+---+---+---+---+---+---+---+ >> 3 | | | P | | B | | | | >> +---+---+---+---+---+---+---+---+ >> 2 | | | | | Q | | P | P | >> +---+---+---+---+---+---+---+---+ >> 1 | R | | | | | R | K | | >> +---+---+---+---+---+---+---+---+ >> a b c d e f g h >> >>solution 1. Nxh7 >> time surplus 0.00 time limit 20:00 (20:00) >> nss depth time score variation (1) >> 6-> 0.62 1.04 1. Qa2 e6 2. Qf2 f5 3. exf6 Rxf6 >> 7 0.76 0.87 1. Qa2 e6 2. Qf2 Qc7 3. Bf4 h6 4. Nf3 >> 7 1.74 0.88 1. Qf2 a5 2. Nxf7 axb4 3. cxb4 Qxb4 >> 4. Bg5 >> 7 2.22 1.00 1. Rf2 h6 2. Nf3 a5 3. Qd2 axb4 4. >> cxb4 >> 7-> 3.19 1.00 1. Rf2 h6 2. Nf3 a5 3. Qd2 axb4 4. >> cxb4 >> 8 3.64 0.84 1. Rf2 h6 2. Nf3 a5 3. Qd2 axb4 4. >> cxb4 e6 >> 8 6.26 0.93 1. Qf2 Qd8 2. b5 Qe8 3. bxc6 Nxc6 4. >> a5 e6 >> 8 10.04 1.04 1. e6 Bxe6 2. Nxe6 fxe6 3. Qg4 Qd8 >> 4. Qxe6+ Kh8 5. Bf4 >> 8-> 10.63 1.04 1. e6 Bxe6 2. Nxe6 fxe6 3. Qg4 Qd8 >> 4. Qxe6+ Kh8 5. Bf4 >> 9 11.44 1.24 1. e6 Bxe6 2. Nxe6 fxe6 3. Qg4 Rxf1+ >> 4. Rxf1 Kh8 5. Qxe6 Qc7 >> 9-> 14.23 1.24 1. e6 Bxe6 2. Nxe6 fxe6 3. Qg4 Rxf1+ >> 4. Rxf1 Kh8 5. Qxe6 Qc7 >> 10 16.46 1.30 1. e6 Bxe6 2. Nxe6 fxe6 3. Qc4 Kh8 >> 4. Rxf8+ Bxf8 5. Qxe6 Qd8 6. Rf1 Nd7 >> 10-> 32.85 1.30 1. e6 Bxe6 2. Nxe6 fxe6 3. Qc4 Kh8 >> 4. Rxf8+ Bxf8 5. Qxe6 Qd8 6. Rf1 Nd7 >> 11 36.91 1.41 1. e6 Bxe6 2. Nxe6 fxe6 3. Qc4 Qc7 >> 4. Qxe6+ Kh8 5. Rxf8+ Bxf8 6. Rf1 Nd7 >> 7. Rf7 Rd8 >> 11-> 57.03 1.41 1. e6 Bxe6 2. Nxe6 fxe6 3. Qc4 Qc7 >> 4. Qxe6+ Kh8 5. Rxf8+ Bxf8 6. Rf1 Nd7 >> 7. Rf7 Rd8 >> 12 1:08 1.32 1. e6 Bxe6 2. Nxe6 fxe6 3. Qc4 Qd8 >> 4. Qxe6+ Kh8 5. Rxf8+ Bxf8 6. Rf1 a5 >> 7. Qf7 Nd7 >> 12-> 3:44 1.32 1. e6 Bxe6 2. Nxe6 fxe6 3. Qc4 Qd8 >> 4. Qxe6+ Kh8 5. Rxf8+ Bxf8 6. Rf1 a5 >> 7. Qf7 Nd7 >> 13 4:16 1.54 1. e6 Bxe6 2. Nxe6 fxe6 3. Qc4 Qd8 >> 4. Qxe6+ Kh8 5. Rxf8+ Bxf8 6. Rf1 Nd7 >> 7. Rf7 Nf6 8. Qe5 >> 13-> 6:45 1.54 1. e6 Bxe6 2. Nxe6 fxe6 3. Qc4 Qd8 >> 4. Qxe6+ Kh8 5. Rxf8+ Bxf8 6. Rf1 Nd7 >> 7. Rf7 Nf6 8. Qe5 >> 14 8:34 1.50 1. e6 Bxe6 2. Nxe6 fxe6 3. Qc4 Qd8 >> 4. Qxe6+ Kh8 5. Rxf8+ Qxf8 6. Rf1 Bf6 >> 7. Bg5 Kg7 8. Rf2 Qf7 >> time=20:01 cpu=99% mat=0 n=517825835 fh=90% nps=431047 >> ext-> chk=14494777 pp=578838 1rep=1498995 mate=120778 >> predicted=0 nodes=517825835 evals=117491948 >> endgame tablebase-> probes done=0 successful=0 >> hashing-> trans/ref=24% pawn=9% used=99% >>----------------------> solution incorrect (162/179). > > > >Nxh7 not found after 11 minutes and 13 plies. However Rebel's move Qf2 >and evaluation is interesting. > >Ed > >------------------------------- > >00:00:23 10.00 1.78 1.e6 Bxe6 2.Nxe6 fxe6 3.Rxf8 Bxf8 > 4.Qg4 Qd8 5.Qxe6 Kh8 6.Rf1 Bg7 7.Bg5 > Nd7 8.Bxe7 (21) > >00:00:49 10.40 1.79 1.Qe1 h6 2.d5 Qc7 3.Nxf7 Rxf7 4.Rxf7 > Kxf7 5.e6 Ke8 6.exd7 Nxd7 7.dxc6 > bxc6 8.Bxg6 Kd8 (44) > >00:00:58 11.00 1.70 1.Qe1 h6 2.Nxf7 Rxf7 3.Rxf7 Kxf7 > 4.e6 Bxe6 5.d5 c5 6.Bxc5 Qa6 7.dxe6 > Qxe6 8.Bxb7 (52) > >00:01:01 11.01 1.74 1.e6 Bxe6 2.Nxe6 fxe6 3.Rxf8 Bxf8 > 4.Qg4 Qd8 5.Rf1 Nd7 6.Bxg6 hxg6 > 7.Qxg6 Kh8 8.Qh5 Kg8 (58) > >00:01:57 11.09 1.86 1.Qf2 Na6 2.e6 fxe6 3.Qh4 h6 4.Bxg6 > e5 5.a5 Qb5 6.Bf7 Kh8 (91) > >00:03:58 12.00 2.37 1.Qf2 Be8 2.Qh4 h6 3.Nh3 Kh7 4.Qxe7 >00:06:25 13.00 2.60 1.Qf2 Na6 2.e6 fxe6 3.Qh4 h6 4.Bxg6 > Rf6 5.Rxf6 exf6 (306) Here is Deep Fritz's opinion: Deep Fritz(PIII800 64 mbytes hash) also cannot find Nxh7 after 13 plies and 11 minutes It also likes Qf2 Note that it is not convenient to copy positions when there is no FEN and only a diagram that is not based on FEN New position [D]rn3rk1/pp1bppbp/1qp3p1/4P1N1/PP1PB3/2P1B3/4Q1PP/R4RK1 w - - 0 1 Analysis by Deep Fritz: 1.Bxg6-- = (0.00) Depth: 1/3 00:00:00 1.Bxg6-- fxg6 -+ (-1.41) Depth: 1/5 00:00:00 1.Nxh7! µ (-1.31) Depth: 1/5 00:00:00 1.Nxh7! Kxh7 µ (-0.75) Depth: 1/5 00:00:00 1.Qf3! ± (0.78) Depth: 1/5 00:00:00 1.Qf3! +- (1.44) Depth: 1/5 00:00:00 1.Qf3-- ± (1.03) Depth: 2/5 00:00:00 1.Qf3-- ± (1.03) Depth: 2/5 00:00:00 1.a5! ± (1.06) Depth: 2/5 00:00:00 1.a5! Qa6 +- (1.41) Depth: 2/13 00:00:00 1.a5 Qa6 2.Qf3 +- (1.53) Depth: 3/18 00:00:00 1kN 1.a5 Qd8 2.Qc4 Qe8 +- (1.50) Depth: 4/16 00:00:00 2kN 1.Qc4! +- (1.53) Depth: 4/23 00:00:00 7kN 1.Qc4 e6 2.a5 Qa6 3.Qc5 +- (1.69) Depth: 5/19 00:00:00 21kN 1.Qc4 Qa6 2.Qb3 Be8 3.Rae1 Nd7 +- (1.63) Depth: 6/20 00:00:00 44kN 1.a5! +- (1.66) Depth: 6/20 00:00:00 49kN 1.a5 Qd8 2.Qc4 Qe8 3.e6 fxe6 4.Nxe6 Rf7 +- (1.72) Depth: 7/21 00:00:00 146kN 1.a5 Qd8 2.Qf2 e6 3.Nf3 f6 4.exf6 Rxf6 5.Bg5 +- (1.56) Depth: 8/24 00:00:00 316kN 1.e6! +- (1.59) Depth: 8/28 00:00:02 1310kN 1.e6! fxe6 2.Rxf8+ Bxf8 3.a5 Qc7 4.Qf3 Bg7 +- (1.63) Depth: 8/28 00:00:02 1522kN 1.e6 Bxe6 2.Nxe6 fxe6 3.Qg4 Bf6 4.Bh6 Bxd4+ 5.cxd4 Qxd4+ +- (1.78) Depth: 9/27 00:00:03 1967kN 1.e6 Bxe6 2.Nxe6 fxe6 3.Qg4 Rf5 4.a5 Qb5 5.Bxf5 exf5 +- (1.75) Depth: 10/29 00:00:06 3702kN 1.e6 Bxe6 2.Nxe6 fxe6 3.Rxf8+ Kxf8 4.Rf1+ Bf6 5.Qg4 Kg7 6.a5 Qc7 +- (1.81) Depth: 11/33 00:00:28 16866kN 1.e6 Bxe6 2.Nxe6 fxe6 3.Qg4 Rf5 4.Bxf5 exf5 5.Qe2 a5 +- (1.78) Depth: 12/35 00:01:25 51137kN 1.a5! +- (1.81) Depth: 12/35 00:01:41 59940kN 1.Qf2! +- (1.84) Depth: 12/36 00:02:39 95511kN 1.Qf2! e6 2.d5 Qd8 3.Bc5 exd5 +- (2.22) Depth: 12/37 00:03:37 130916kN 1.Qf2 Na6 2.Qh4 h6 3.Nf3 Kh7 4.Qxe7 Qd8 5.Qd6 +- (2.25) Depth: 13/37 00:07:25 266308kN (Blass, Tel-aviv 24.09.2001) Uri
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