Author: Richard Pijl
Date: 04:34:37 12/10/02
Go up one level in this thread
On December 10, 2002 at 05:32:55, David Rasmussen wrote: >This was a game played between Chezzz and ArasanX on ICC: > >[Event "ICS Rated Standard match"] >[Site "chessclub.com"] >[Date "2002.12.10"] >[Round "-"] >[White "Chezzz"] >[Black "ArasanX"] >[Result "*"] >[WhiteElo "2492"] >[BlackElo "2464"] >[TimeControl "900"] > >1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 O-O 5. e4 d6 6. Be3 Nbd7 7. Nd2 c5 8. >dxc5 Nxc5 9. Be2 Ne8 10. Qc2 f5 11. Bxc5 dxc5 12. O-O Nd6 13. Bd3 Bd4 14. >Rae1 e5 15. Nf3 fxe4 16. Bxe4 Nxe4 17. Qxe4 Rf4 18. Qd5+ Qxd5 19. cxd5 b6 >20. Re3 Bxe3 21. fxe3 Rf5 22. Rf2 Kg7 23. e4 Rh5 24. h3 Ba6 25. g4 Rxh3 26. >Nxe5 Rg3+ 27. Kh2 Re3 28. Rf7+ Kg8 29. Kg2 Re1 30. d6 Bc4 31. Re7 Ba6 32. >d7 Rf1 33. Nd5 Bb5 34. a4 Rd8 >* > >ArasanX resigned here, I don't know why it doesn't say that in the pgn tags. > >Anyway, I think the programs disagreed wildly about the merit of whites 20. Re3. >As I am infinitely weaker than Chezzz, I didn't know what to think, but it >looked speculative to me, and Chezzz is not a very speculative program, it >doesn't have any speculatively large evaluations for any positional terms, that >aren't decisive. So what do other engines think here, and what do they think >about the move 20. Re3? > >[D]r1b3k1/p6p/1p4p1/2pPp3/3b1r2/2N2N2/PP3PPP/4RRK1 w - - 0 20 The white position has a few problems: - The pawn on d5 cannot be defended by an additional piece - The bishop on d4 outside the pawn chain limits the white piece mobility - The rook on f1 is closed in By playing Re3 white solves all of these problems and gets a supported passer for it. The Baron 0.99.4b1 will not play Re3, but plays Ne2 instead. Which solves whites problems as well. The Baron (mobile pentium II-500): ply time nodes score pv 5( 7)& 0 21510 -6 c3e2 f4f7 e2c3 d4c3 b2c3 5( 7). 0 29876 -6 c3e2 f4f7 e2c3 d4c3 b2c3 6( 8)& 0 43792 3 c3e2 f4f8 e2d4 e5d4 e1e7 c8a6 6( 9). 0 63205 3 c3e2 f4f8 e2d4 e5d4 e1e7 c8a6 7(10)& 0 95676 -24 c3e2 f4f5 e2g3 f5f3 g2f3 c8h3 b2b3 7(11)& 1 125428 16 f3e5 c8a6 g2g3 f4f6 e5g4 f6d6 g4h6 7(11). 1 155100 16 f3e5 c8a6 g2g3 f4f6 e5g4 f6d6 g4h6 8(13)& 2 291640 9 c3e2 f4f8 e2d4 e5d4 e1e7 f8d8 f3g5 c8f5 8(13). 2 336154 9 c3e2 f4f8 e2d4 e5d4 e1e7 f8d8 f3g5 c8f5 9(14)& 4 598883 -2 c3e2 f4f8 e2d4 e5d4 e1e7 f8d8 f1e1 d8d5 f3e5 9(14). 9 1129316 -2 c3e2 f4f8 e2d4 e5d4 e1e7 f8d8 f1e1 d8d5 f3e5 10(15)& 12 1488254 -14 c3e2 f4f8 e2d4 e5d4 e1e7 f8d8 f1e1 d8d5 e7e8 g8g7 e1e7 10(16). 21 2572771 -14 c3e2 f4f8 e2d4 e5d4 e1e7 f8d8 f1e1 d8d5 e7e8 g8g7 e1e7 11(17)& 31 3654261 -10 c3e2 f4f5 e2d4 e5d4 e1e8 f5f8 e8f8 g8f8 f1e1 c8f5 d5d6 a8d8 e1e7 11(17). 65 7482982 -10 c3e2 f4f5 e2d4 e5d4 e1e8 f5f8 e8f8 g8f8 f1e1 c8f5 d5d6 a8d8 12(18)& 102 11457628 -9 c3e2 f4f3 g2f3 c8h3 e2d4 e5d4 e1e7 h3f1 g1f1 a8d8 12(18). 191 20535912 -9 c3e2 f4f3 g2f3 c8h3 e2d4 e5d4 e1e7 h3f1 g1f1 a8d8 13(19)& 258 28045831 -7 c3e2 f4f3 g2f3 c8h3 e2d4 e5d4 e1e7 h3f1 g1f1 a8d8 e7a7 After Re3: ply time nodes score pv 5( 7)& 0 11661 174 c8a6 e3e1 a6f1 g1f1 g8g7 5( 8). 0 14965 174 c8a6 e3e1 a6f1 g1f1 g8g7 6( 8)& 0 30253 147 c8a6 f1e1 d4e3 e1e3 f4b4 d5d6 6(11). 0 54223 147 c8a6 f1e1 d4e3 e1e3 f4b4 d5d6 7(10)& 0 73080 120 c8a6 f1e1 d4e3 e1e3 a8d8 e3e5 g8g7 7(12). 1 149263 120 c8a6 f1e1 d4e3 e1e3 a8d8 e3e5 g8g7 8(12)& 1 207365 113 c8a6 f1e1 d4e3 e1e3 a8e8 e3e5 e8e5 f3e5 8(13). 3 374199 113 c8a6 f1e1 d4e3 e1e3 a8e8 e3e5 e8e5 f3e5 9(14)& 4 511985 113 c8a6 f1e1 d4e3 e1e3 g8g7 f3e5 f4b4 b2b3 a8e8 9(14)& 5 617043 128 d4e3 f2e3 f4f5 g2g4 f5f7 f3e5 f7e7 e5c6 e7e3 9(15). 7 893522 128 d4e3 f2e3 f4f5 g2g4 f5f7 f3e5 f7e7 e5c6 e7e3 10(15)& 10 1264700 102 d4e3 f2e3 f4f8 f1e1 f8f5 e3e4 f5h5 g1f2 c8d7 a2a3 10(17). 46 5100976 102 d4e3 f2e3 f4f8 f1e1 f8f5 e3e4 f5h5 g1f2 c8d7 a2a3 11(17)& 60 6680873 126 d4e3 f2e3 f4f5 f1f2 g8g7 c3e4 c8b7 11(18). 89 9788608 126 d4e3 f2e3 f4f5 f1f2 g8g7 c3e4 c8b7 12(18)& 112 12379096 121 d4e3 f2e3 f4f5 e3e4 f5h5 h2h3 c8a6 f1d1 a8d8 g1f2 g8f7 12(19). 177 19368010 121 d4e3 f2e3 f4f5 e3e4 f5h5 h2h3 c8a6 f1d1 a8d8 g1f2 g8f7 13(20)& 232 25685025 131 d4e3 f2e3 f4f5 f1f2 g8g7 d5d6 f5h5 c3e4 c8g4 e4g3 g4f3 g2f3 h5h4 13(21). 375 40929285 131 d4e3 f2e3 f4f5 f1f2 g8g7 d5d6 f5h5 c3e4 c8g4 e4g3 g4f3 g2f3 h5h4 I'll try this position when I get home with other (newer) Baron versions. If the results differ much I'll post them again. Imo Arasan could have done better with 25..Raf8 instead of Rg3+. The mistake that gave the win to Chezzz was 29..Re1 instead of 29..Raf8 (again) Richard
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