Author: Uri Blass
Date: 02:33:40 09/19/01
Go up one level in this thread
On September 19, 2001 at 05:28:47, Janosch Zwerensky wrote: > >>White(1): epdpfga test.epd test.out >>PFGA: EPD record: 1 ID: test.1 >>end-game phase >> clearing hash tables >> time surplus 0.00 time limit 120:00 (120:00) >> nss depth time score variation (1) >>starting thread 1 >> (2) 9 0.16 2.57 1. Re6 Kd7 2. Re2 Kc7 3. Rc2+ Kb7 4. >> Rd2 Be5 5. Rd7+ Bc7 6. Kb4 >> 9 0.19 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Rg7 Bd4 6. Rd7 <HT> >> (2) 9-> 0.21 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Rg7 Bd4 6. Rd7 <HT> >> 10 0.24 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Rg7 Bd4 6. Rd7 <HT> >> (4) 10-> 0.30 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Rg7 Bd4 6. Rd7 <HT> >> (3) 11 0.33 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Rg7 Bd4 6. Rd7 <HT> >> (4) 11-> 0.47 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Rg7 Bd4 6. Rd7 <HT> >> (3) 12 0.54 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bc5 6. Rb7+ Ka8 7. >> Rd7 Kb8 8. a5 >> (4) 12-> 0.72 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bc5 6. Rb7+ Ka8 7. >> Rd7 Kb8 8. a5 >> (3) 13 0.83 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Kb5 Bd4 7. >> Rd7 Bc5 8. a5 >> (4) 13-> 1.13 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Kb5 Bd4 7. >> Rd7 Bc5 8. a5 >> (3) 14 1.27 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rd7 Kb8 8. Kb5 Bc5 9. a5 <HT> >> (4) 14-> 1.97 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rd7 Kb8 8. Kb5 Bc5 9. a5 <HT> >> (3) 15 2.24 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rd7 Kb8 8. Kb5 Bc5 9. a5 Kc8 >> (4) 15-> 3.85 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rd7 Kb8 8. Kb5 Bc5 9. a5 Kc8 >> (3) 16 4.55 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Kb5 Bg1 9. Rd7 Bc5 10. a5 >> <HT> >> (4) 16-> 14.24 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Kb5 Bg1 9. Rd7 Bc5 10. a5 >> <HT> >> (3) 17 15.04 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Kb5 Bg1 9. Rd7 Bc5 10. a5 >> Kc8 >> (4) 17-> 24.04 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Kb5 Bg1 9. Rd7 Bc5 10. a5 >> Kc8 >> (3) 18 25.16 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Rg7 Bd4 9. Rb7+ Ka8 10. >> Rd7 Be3 11. Kb5 Bc5 >> (4) 18-> 42.14 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Rg7 Bd4 9. Rb7+ Ka8 10. >> Rd7 Be3 11. Kb5 Bc5 >> (3) 19 44.21 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Rg7 Be3 9. Rb7+ Ka8 10. >> Rh7 Bd4 11. Kd5 Bc3 12. Rc7 >> (4) 19-> 1:08 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Rg7 Be3 9. Rb7+ Ka8 10. >> Rh7 Bd4 11. Kd5 Bc3 12. Rc7 >> (3) 20 1:10 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Rg7 Be3 9. Rb7+ Ka8 10. >> Rh7 Bd4 11. Rd7 Be3 12. Kb5 Bc5 >> (3) 20-> 2:18 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Rg7 Be3 9. Rb7+ Ka8 10. >> Rh7 Bd4 11. Rd7 Be3 12. Kb5 Bc5 >> (2) 21 2:22 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Rg7 Bd4 9. Rb7+ Ka8 10. >> Rd7 Be3 11. Kd6 Bd4 12. Kc7 Bc5 13. >> Kc6 >> (4) 21-> 3:42 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Rg7 Bd4 9. Rb7+ Ka8 10. >> Rd7 Be3 11. Kd6 Bd4 12. Kc7 Bc5 13. >> Kc6 >> (3) 22 3:50 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Rg7 Bd4 9. Rb7+ Ka8 10. >> Rd7 Be3 11. Re7 Bg1 12. Kb5 Bd4 13. >> Kc4 Bc5 >> (3) 22-> 5:36 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Rg7 Bd4 9. Rb7+ Ka8 10. >> Rd7 Be3 11. Re7 Bg1 12. Kb5 Bd4 13. >> Kc4 Bc5 >> (2) 23 5:49 2.83 1. Rc6+ Kb7 2. Rd6 Be3 3. Rd7+ Ka8 >> 4. Kc6 Kb8 5. Re7 Bf2 6. Rb7+ Ka8 7. >> Rh7 Kb8 8. Rg7 Bd4 9. Rb7+ Ka8 10. >> Rd7 Be3 11. Rd8+ Ka7 12. Kb5 Kb7 13. >> Rd3 Bf2 14. Rd7+ Ka8 15. Kc6 Bc5 >> 23 10:49 ++ 1. Ka6!! >> 23 10:50 3.23 1. Ka6 Bf2 2. Rg5 Kb8 3. Rb5 Kc8 4. >> Ka7 Bd4 5. Rb4 Bf2 6. Rc4+ Kd7 7. Kb7 >> Bg1 8. Rc7+ Kd6 9. Rh7 Ke6 10. Ka6 >> Kf5 11. Rh6 Bd4 12. Rxb6 Ke4 13. Rd6 >> (4) 23-> 11:00 3.23 1. Ka6 Bf2 2. Rg5 Kb8 3. Rb5 Kc8 4. >> Ka7 Bd4 5. Rb4 Bf2 6. Rc4+ Kd7 7. Kb7 >> Bg1 8. Rc7+ Kd6 9. Rh7 Ke6 10. Ka6 >> Kf5 11. Rh6 Bd4 12. Rxb6 Ke4 13. Rd6 >> 24 12:26 ++ 1. Ka6!! >> (3) 24 12:47 3.63 1. Ka6 Bf2 2. Rg5 Kb8 3. Rb5 Kc8 4. >> Rf5 Bd4 5. Rf8+ Kc7 6. Rf4 Bg1 7. Rf7+ >> Kc6 8. Rh7 Bc5 9. Rh8 Bg1 10. Rc8+ >> Kd5 11. Rd8+ Kc4 12. Rb8 Kb3 13. a5 >> Bh2 14. Rb7 Be5 15. axb6 >> > >That's possibly quite impressive and interesting. The crafty main line as well >as its evaluation suggest that it might have found a way of forcing capture of >the black pawn on b6, and though its mainline seems to more or less follow the >ideas underlying the Fischer/Ham/Finn/Andersson/Froeyman plan for the first few >moves, after that it obiously does things completely different. So, if it can >somehow be verified that Crafty can force a won position like the one that it >arrives at at the end of its PV, then this might in fact tell us something new >about this fascinating endgame. >I'll take a closer look at Crafty's analysis when I'll have more time. It might >also be interesting to see what Crafty thinks about this position when it has >access to all five-men tablebases, since no doubt the position at the end of its >current PV is a tablebase win. > >Regards, >Janosch. I believe that Crafty has access to the five piece tablebases. The fact that the position in the end of it's pv is a tablebase position does not contradict it. It is known that programs do not use tablebases everywhere in the tree(otherwise they are going to be slower) and crafty does not use tablebases in the qsearch. Uri
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