Author: Paul
Date: 01:26:04 11/10/01
Go up one level in this thread
On November 10, 2001 at 00:53:48, Heiner Marxen wrote: >On November 09, 2001 at 11:03:54, leonid wrote: > >>On November 09, 2001 at 09:17:31, Paul wrote: >> >>>On November 09, 2001 at 08:07:10, leonid wrote: >>> >>>>[D]nqbqrrQ1/k4P2/4N3/1RRNBK2/2Q5/1N4b1/Bqpqpnq1/8 w - - >>>> >>>>Please indicate your result. >>>> >>>>Thanks, >>>>Leonid. >>> >>>Hi guys! >> >>Hi! >> >>>Mine finds this mate so incredibly fast, that I (almost) don't believe it: >>> >>>00:03 WM13 09 Bxb8+ Bxb8 Qa4+ Ba6 Rb7+ Kxb7 Nxd8+ Rxd8 Rb5+ Bxb5 Qxb5+ Ka7 Qa4+ >>>Qa5 Qxa5+ Kb7 Qb5+ Ka7 Qa4+ Kb7 Nc5+ Kc8 Qa6+ Qb7 Qxb7# >> >>You found very quickly indeed. Mine took 1.64 sec to find mate in 13 by >>selective. >> >>This mate is mate in 13. I went only 12 moves by brute force to be sure about >>its depth. Branching factor is very nice on this position and by brute force it >>is not difficult to solve it even 13 moves deep. > >Ah, yes, you are right. Chest thinks also that this is a mate in 13: > >PV: Bxb8+ Bxb8 Qa4+ Ba6 Rb7+ Kxb7 Nxd8+ Rxd8 Rb5+ Bxb5 Qxb5+ Ka7 Qa4+ Qa5 Qxa5+ >Kb7 Qb5+ Ka7 Qa4+ Kb7 Nc5+ Kc8 Qa6+ Qb7 Qxb7# > >Uhh... that is exactly Paul's PV, isn't it? Ohhhh ... now you've done it: people will start thinking Pretz = Chest++ ;) But seriously ... did you look at the solution tree? Probably not much choice, also seeing the very small EBF below. >It was a relatively easy job, with a very small EBF: 320 seconds on my K7/600: ># 1 0.00s 0kN 0.87 1- 0 ># 2 0.00s 0kN 1.00 1- 0 ># 3 0.00s 1kN [ 9.31] 0.94 54- 0 ># 4 0.05s 3kN [ 5.96] 1.04 379- 0 ># 5 0.26s [ 5.20] 13kN [ 3.99] 1.23 1673- 0 ># 6 0.89s [ 3.42] 40kN [ 3.13] 1.67 6039- 0 ># 7 2.57s [ 2.89] 107kN [ 2.67] 2.41 17894- 0 ># 8 6.40s [ 2.49] 255kN [ 2.37] 3.47 43831- 0 ># 9 14.53s [ 2.27] 571kN [ 2.24] 4.88 97424- 0 ># 10 30.51s [ 2.10] 1202kN [ 2.11] 6.71 203223- 0 ># 11 63.00s [ 2.06] 2497kN [ 2.08] 8.71 427138- 0 ># 12 133.75s [ 2.12] 5422kN [ 2.17] 10.72 950362- 0 ># 13 319.28s [ 2.39] 13493kN [ 2.49] 11.95 2466562- 223 > >>>That's quite a difference with the last one, isn't it! And for Heiner: now I'm >>>pretty sure you'll find something shorter ... ;) > >So much about "pretty sure" ;-} :) ... I know now that I should've checked with Chest before saying something like that. But I don't have the patience for that anymore ... the d@#$^$d program always takes soooo long! [<g><d>&<r>] ;) >You lost! Or did you win? :-)) Ahh, now I see: Pretz did win ;-) >He is much smarter than its author... no, I did not say that <grin>. Yep ... you've done it again: Pretz already had a bit of an attitude, but now, after your words ... ouch, she just bit me again! :) >>>Groetjes from sunny but cold Amsterdam, > >Weather here around is similar: cold, but mostly sunny (over the day). > >>Cheers from Montreal where it is better to stay indoor. Windy and cold. >> >>Leonid. >> >Cheers, >Heiner Herzliche Grüße, Paul
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