Author: Michel Langeveld
Date: 10:03:34 09/24/01
Go up one level in this thread
On September 24, 2001 at 06:26:00, Uri Blass wrote: >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 Good alternative 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 Ok shall give them next time. >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 ` Impressive and promisising score. After 1 ... Na6 and 2 ... h6 white seems to be sure to get 5.xx. So 1 .. Qd8 (+2.53) and 2 ... Bxe6 (+3.22) seems to be slighly better. But it seems to be an promising move. Although Nxh7 is better since it leads forced to 5.xx.
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