Author: Vincent Lejeune
Date: 15:49:03 01/07/02
Go up one level in this thread
On January 07, 2002 at 14:53:25, Dann Corbit wrote: >On January 07, 2002 at 14:45:25, Heiner Marxen wrote: > >>On January 07, 2002 at 13:48:46, Heiner Marxen wrote: >> >>>On January 07, 2002 at 13:43:24, Vincent Diepeveen wrote: >>> >>>>On January 07, 2002 at 13:41:58, Heiner Marxen wrote: >>>> >>>>>On January 07, 2002 at 12:13:31, José Antônio Fabiano Mendes wrote: >>>>> >>>>>> Sorry,I don't have the solution,just the word of Philippe Canteau. JAFM >>>>> >>>>>Unfortunately, according to Chest this is no mate in 16. >>>>>I'll now try with depth=18 and followup. >>>> >>>>are you trying 9 moves at chest now or 18 moves = 36 ply ? >>> >>>18 moves = 35 plies. >>> >>>Timing up to now (Athlon 1500+, 128MB hash, some 5-piece EGTBs): >>> >>># 4 0.00s 0kN [ 3.65] 1.22 34- 0 >>># 5 0.00s 1kN [ 2.73] 1.69 94- 0 >>># 6 0.01s 1kN [ 2.32] 2.41 199- 0 >>># 7 0.02s [ 2.00] 3kN [ 2.06] 3.31 362- 0 >>># 8 0.03s [ 1.50] 5kN [ 1.83] 4.43 584- 0 >>># 9 0.06s [ 2.00] 9kN [ 1.71] 5.87 934- 0 >>># 10 0.19s [ 3.17] 30kN [ 3.15] 5.95 4147- 0 >>># 11 0.94s [ 4.95] 151kN [ 5.13] 6.12 22096- 0 >>># 12 7.98s [ 8.49] 1700kN [ 11.23] 4.91 209156- 0 >>># 13 18.94s [ 2.37] 4225kN [ 2.48] 7.23 496401- 1 >>># 14 30.99s [ 1.64] 7008kN [ 1.66] 11.25 829130- 52 >>># 15 37.34s [ 1.20] 8470kN [ 1.21] 16.63 1007516- 225 >>># 16 290.95s [ 7.79] 63709kN [ 7.52] 11.38 7013345- 3815028 >>> >>>Groetjes, >>>Heiner >> >>Chest confirms that this is a mate in 18 (52.2 minutes): >> >>PV: d3 Rxd3+ f3 Rxf3+ Kh2 Rh3+ Kg1 Rh1+ Kf2 Rf1+ Ke3 Rf3+ Kd2 Rd3+ Kc1 Rd8 b4 >>Rd1+ Kb2 Rb1+ Kc3 Rb3+ Kd2 Rd3+ Ke1 Rd1+ Kf2 Rf1+ Kg3 Rf3+ Kh2 Rxf7 Ra8+ Rf8 >>Rxf8# >> >>Timing continued: >> >># 17 624.94s [ 2.15] 135460kN [ 2.13] 13.27 14703795- 11504562 >># 18 3133.94s [ 5.01] 650405kN [ 4.80] 11.79 69670388- 66471155 >> >>EGTB use was minimal (7384 accesses). > >Pretty astounding that Pepito found the exact same line in 45.67 seconds. >Probably a lot of single-reply to check, since the line seems completely forced. One thing is sure now : at least one of this 3 engines have un bug !!
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