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Subject: Rebel 12 engine beta1 testposition

Author: Werner Schuele

Date: 10:43:31 03/31/03


In a game Rebel 12 against Chessmaster 60 minutes + 15 sec after following
position the engine beta1 blunders (move 35):

[D]r6r/2k2p2/3p1P1P/P3p1p1/2p2qQ1/8/2P4P/R3R1K1 w - - 0 36

follwing evaluation:
 02:16 12.02 0.00 Qg2 Rxh6 Rab1 d5 Rb7 Kxb7 Qxd5

But Chessmaster does not take the rook in move 38 and won. All engines of Rebel
need more than 1 minute after move 36 to see Rab1 is loosing after d5 Rb7 Kc6.
Other programs see this much earlier. I did change some varables of the beta
engines - nothing worked. Perhaps another tester finds a way to avoid Qg2. And
here the hole game:

[Event "Wertungspartie, 60m + 15s"]
[Site "Maschinenraum"]
[Date "2003.03.30"]
[Round "?"]
[White "cm8000ws, Rebel 12b1P0 prune bad moves_0"]
[Black "CM8A.C.E., CMIXRoro"]
[Result "0-1"]
[ECO "B82"]
[WhiteElo "2509"]
[BlackElo "2588"]
[PlyCount "92"]

1. e4 {4} 1... c5 {0} 2. Nf3 {1} 2... d6 {0} 3. d4 {54} 3... cxd4 {0} 4. Nxd4 {
1} 4... Nf6 {0} 5. Nc3 {1} 5... a6 {0} 6. f4 {1} 6... e6 {0} 7. Qf3 {1} 7...
Qb6 {0} 8. a3 {1} 8... Nc6 {0} 9. Nxc6 {1} 9... bxc6 {0} 10. g4 {1} 10... Be7 {
73} 11. g5 {117} 11... Nd7 {-0.21/12 0} 12. b4 {119} 12... c5 {-0.51/11 111}
13. b5 {142} 13... axb5 {-0.62/12 111} 14. Bxb5 {65} 14... Ba6 {-0.64/12 85}
15. Bxd7+ {75} 15... Kxd7 {-0.88/10 32} 16. f5 {75} 16... g6 {-0.71/11 28} 17.
f6 {120} 17... Bd8 {-0.72/13 0} 18. Bf4 {152} 18... Bc7 {-0.59/11 110} 19. Kf2
{1} 19... c4+ {-0.50/10 90} 20. Kg2 {4} 20... Qc5 {-0.41/11 100} 21. Rhd1 {1}
21... Bb7 {-0.40/11 96} 22. a4 {33} 22... Bc6 {-0.31/11 68} 23. Qg3 {136} 23...
Rhd8 {-0.59/10 69} 24. Qh3 {98} 24... h6 {-0.84/11 1} 25. gxh6 {141} 25... g5 {
-0.87/11 0} 26. Bg3 {161} 26... Qe3 {-0.89/11 81} 27. Bf2 {7} 27... Bxe4+ {
-0.96/11 178} 28. Nxe4 {73} 28... Qxe4+ {-0.78/10 0} 29. Kg1 {80} 29... Rg8 {
-0.76/10 53} 30. a5 {86} 30... Qe2 {-0.73/9 54} 31. Bb6 {161} 31... Rh8 {
-0.53/10 88} 32. Qg3 {84} 32... e5 {-0.62/11 96} 33. Bxc7 {99} 33... Kxc7 {
-0.67/13 0} 34. Re1 {71} 34... Qd2 {-0.68/12 24} 35. Qg4 {174} 35... Qf4 {
-0.37/13 2} 36. Qg2 {136} 36... Rxh6 {-1.12/11 53} 37. Rab1 {18} 37... d5 {
-1.33/11 32} 38. Rb7+ {49} 38... Kc6 {-1.25/12 0} 39. Rb6+ {76} 39... Kc5 {
-1.73/11 34} 40. c3 {14} 40... Rxa5 {-2.46/12 69} 41. Rb2 {1} 41... Rh4 {
-2.87/11 82} 42. h3 {1} 42... e4 {-3.12/11 52} 43. Rf2 {39} 43... Qe5 {
-3.69/12 45} 44. Rc2 {42} 44... Kc6 {-4.12/11 109} 45. Rb1 {120} 45... Rf4 {
-4.51/12 0} 46. Qh2 {82} 46... Ra3 {
cm8000ws,Rebel 12b1P0 gibt auf  (Lag: Av=0.22s, max=0.4s) -5.08/11 53} 0-1




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