Author: Dann Corbit
Date: 20:39:46 06/06/02
Go up one level in this thread
On June 06, 2002 at 20:41:42, Jon Dart wrote: >This is a recent test game Arasan vs. Pharaon: > >[Event "?"] >[Site "-"] >[Date "2002.06.05"] >[Round "?"] >[White "Arasan 6.0"] >[Black "Pharaon 2.62"] >[Result "0-1"] >[ECO "B33"] >[TimeControl "1200+0"] > >1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nf6 6. Ndb5 d6 >7. Bf4 e5 8. Bg5 a6 9. Na3 b5 10. Nd5 Be7 11. Bxf6 Bxf6 12. c3 O-O >13. Nc2 Bg5 14. a4 bxa4 15. Rxa4 a5 16. Bc4 Rb8 17. b3 Kh8 18. O-O f5 >19. exf5 Bxf5 20. Nce3 Bg6 21. Qg4 Rb7 22. Kh1 Rbf7 23. f3 Rb7 >24. Rfa1 Rb8 25. Qe6 e4 26. fxe4 Ne5 27. Rxa5 Bxe3 28. Nxe3 Bf7 >29. Qh3 Nxc4 30. Nxc4 Bxc4 31. Rh5 Bg8 32. b4 Qe8 33. e5 Rb5 34. Qh4 >Rxe5 35. Rxe5 Qxe5 36. Qe1 Ra8 37. Rc1 Qxe1+ 38. Rxe1 Ra3 39. Rc1 Bd5 >40. Kg1 Ra2 41. Rd1 Rxg2+ 42. Kf1 Bb3 43. Kxg2 Bxd1 44. b5 Ba4 45. b6 >Bc6+ 46. Kg3 Kg8 47. Kf4 Kf7 48. c4 Ke6 49. Ke3 Bb7 50. Kd4 Kd7 >51. Kd3 0-1 {White resigns} > >An interesting move here is 25 .. e4 from this position: > >[D] 1r1q1r1k/6pp/2npQ1b1/p2Np1b1/R1B5/1PP1NP2/6PP/R6K b - - > >Crafty 18.10 doesn't like this move: > > 25. Qe6 e4 > ({13:+0.33} 25. ... e4 26. fxe4 Ne5 27. Qh3 Bxe4 28. Rxa5 Nxc4 >29. Nxc4 Rf2 30. Qg4 Bxg2+ 31. Kg1 Bf3 32. Qf5 Rg2+ 33. Kf1 $14) > ({13:+0.00} 25. ... Be8 26. Qg4 Bg6 $10) > ({13:+0.00} 25. ... Bf7 26. Qg4 Bg6 $10) > ({13:+0.01} 25. ... Bxe3 26. Nxe3 Bf7 27. Qg4 Bxc4 28. Rxc4 Ne7 > 29. Ra3 Rf6 30. Rca4 Rc8 31. Nc4 Nd5 32. b4 Rf4 $10) > 26. fxe4 Ne5 > 27. Rxa5 > ({13:-1.06} 27. Rxa5 Bxe3 28. Nxe3 Bf7 29. Rxe5 Bxe6 30. Rxe6 Q >g5 31. Re1 Rbd8 32. Nf5 Qd2 33. Rf1 Qxc3 34. Rxd6 Rxd6 35. Nxd6 Rxf1+ 36. Bxf1 Q >xb3 $17) > ({13:-0.70} 27. Bf1 Rxb3 28. Rxa5 Bxe4 29. R5a4 Bg6 30. Ra8 Rb8 > 31. Rxb8 Qxb8 32. Kg1 Bxe3+ 33. Nxe3 Rf6 34. Qe7 Be4 $15) > ({13:-0.81} 27. Qh3 Nxc4 28. Rxc4 Rxb3 29. Nf5 Rb2 30. Qg4 h5 3 >1. Qf3 Rb5 32. Rd4 Bf6 33. Rda4 Bg5 $17) > >But notice that by move 27, it sees that as a result of e4 fxe4 Ne5, White can't >do better than -0.70. > >Pharaon itself switches to e4, early but the score doesn't start to go up >significantly for quite a while: > > 7. -28 1 353770 e4 fxe4 Re8 Qh3 Bxe4 Nf5 h6 > 7-> -28 2 469433 e4 fxe4 Re8 Qh3 Bxe4 Nf5 h6 > 8. -33 2 802767 e4 fxe4 Re8 Qh3 Bxe4 Nf5 Re5 Nde3 > 8. -33 5 1573056 Be8! > 8. -33 5 1701477 Re8! > 8-> -33 6 1934613 e4 fxe4 Re8 Qh3 Bxe4 Nf5 Re5 Nde3 > 9. -19 7 2533726 e4 fxe4 Re8 Qg4 Bxe4 Rf1 Rb7 Nf5 Rf7 > 9-> -19 9 3059277 e4 fxe4 Re8 Qg4 Bxe4 Rf1 Rb7 Nf5 Rf7 >10. -7 13 4968281 e4 fxe4 Re8 Qg4 Bxe4 Rf1 Re5 Qh3 Qe8 Nf4 >10-> -7 16 5944242 e4 fxe4 Re8 Qg4 Bxe4 Rf1 Re5 Qh3 Qe8 Nf4 >11. -4 24 9099300 e4 fxe4 Re8 Qg4 Bxe4 Qh5 Rb7 Rd1 Re5 Ng4 Qe8 >11-> -4 31 11430433 e4 fxe4 Re8 Qg4 Bxe4 Qh5 Rb7 Rd1 Re5 Ng4 Qe8 >12. 8 81 30163019 e4 fxe4 Ne5 Qh3 Bxe4 Be2 Bxd5 Nxd5 Rf2 Bd3 Nxd3 Qxd3 > Rxb3 Rxa5 >12-> 8 95 35602128 e4 fxe4 Ne5 Qh3 Bxe4 >13. 31 188 71214188 e4 fxe4 Ne5 Qh3 Bxe4 Qg3 Nxc4 Rxc4 >13-> 31 215 81280627 e4 fxe4 Ne5 Qh3 Bxe4 Qg3 Nxc4 Rxc4 >14. 39 538 205827618 e4 fxe4 > >(Scores here are + for a Black advantage, unlike Crafty: so the score at ply 14 >is 0.39 in Black's favor). > >So far I'm not sure if e4 is decisively the best move, or if there's a better >defense to it. It is peculiar that both programs expect the PV e4 fxe4 Ne5 Qh3, >but think (for a long while) that the score is even or + for White. Delfi-300 goes along with Yace's idea: setboard 1r1q1r1k/6pp/2npQ1b1/p2Np1b1/R1B5/1PP1NP2/6PP/R6K b - - go 2 2 0 268 b8b7 a4a2 2 -2 0 779 g6f7 e6h3 3 0 1 1222 g6f7 e6h3 d8e8 4 4 2 7756 g6f7 e6g4 f7g6 a4a2 4 0 3 12308 b8b7 e6g4 b7f7 a4a2 5 5 8 26272 b8b7 e6g4 b7f7 c4b5 h7h5 5 3 13 46238 f8f7 c4d3 g6xd3 e6xf7 b8xb3 6 18 22 90422 f8f7 c4d3 g6xd3 e6xf7 b8xb3 e3f5 6 2 31 142933 b8b7 e6g4 g5h6 a4a2 d8g5 g4e6 6 0 39 169813 g6f7 e6h3 d8c8 h3g3 c8d8 a1d1 6 -4 68 322375 g6e8 e6h3 e8d7 e3g4 g5h4 g2g3 7 -3 107 487347 g6e8 e6h3 e8d7 e3g4 d7e6 h3h5 g5h4 8 -5 235 1216530 g6e8 e6h3 e8d7 e3g4 d7f5 a4a2 d8e8 h3g3 9 -17 663 3229846 g6e8 e6g4 e8d7 g4e4 d8e8 d5c7 e8e7 c4d5 f8f4 10 -12 1605 9733384 g6e8 e6g4 e8d7 g4e4 b8b7 c4d3 g7g6 b3b4 a5xb4 c3xb4 11 -10 9924 49515432 g6e8 a4a2 b8b7 e3d1 d8d7 e6xd7 b7xd7 d1f2 e8f7 f2e4 g5h4 12 -4 38057 200460069 g6e8 e3f1 b8b7 f1g3 c6e7 a4xa5 e8f7 e6h3 f7xd5 c4xd5 e7xd5 a5xd5
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