Are all draws by engines Perfect games ?

[Chessqueen]

Rubichess came a long way with this newer version and played a perfect Draw game against Stockfish
Note: Next I will reverse engines playing the exact first 2 opening moves to see how Stockfish and Rubichess handle this Opening

[pgn][Event "Perfect draw game"] [Date "2023.09.30"] [Round "?"] [White "RubiChess-20230918_x86-64-avx2"] [Black "Stockfish-windows-x86-64-avx2"] [Result "1/2-1/2"] [BlackElo "3555"] [ECO "B07"] [Opening "Pirc"] [Time "01:59:49"] [Variation "Lengfellner System"] [WhiteElo "3520"] [TimeControl "0+5"] [Termination "normal"] [PlyCount "295"] [WhiteType "program"] [BlackType "program"] 1. e4 e6 2. d4 d6 3. Nf3 Be7 4. Bd3 Nd7 5. O-O e5 6. h3 exd4 7. Nxd4 Nc5 8. c4 Nxd3 9. Qxd3 Bf6 10. Nc3 Ne7 11. b3 b6 12. Bb2 Bb7 13. Nd5 Bxd4 14. Bxd4 Nxd5 15. exd5 O-O 16. Qg3 f6 17. a4 Rf7 18. a5 Qf8 19. Rfd1 Re8 20. Rd3 Bc8 21. Qf4 Rfe7 22. Rg3 Kh8 23. Re3 Rxe3 24. Bxe3 Qf7 25. Kh2 Kg8 26. axb6 axb6 27. b4 h5 28. Qf3 Kf8 29. Qg3 Kg8 30. Ra7 Re7 31. Ra8 Re8 32. Bd4 Bd7 33. Ra7 Rc8 34. b5 Qe7 35. Qf3 Qe8 36. Qd3 Qd8 37. Ra3 Ra8 38. Ra6 Be8 39. Qg3 Kh7 40. Qh4 Kg8 41. f4 Rc8 42. Qg3 Bf7 43. Ra7 Kf8 44. Qd3 Kg8 45. Qg3 Kf8 46. Qd3 Kg8 47. Qa3 Qe8 48. Qf3 Qe1 49. Qd3 Qe8 50. f5 Kf8 51. Bf2 Kg8 52. Bg3 Kh7 53. Qf3 Kg8 54. Kg1 Kh7 55. Kh2 Kg8 56. Qd3 Qd8 57. Qe4 Ra8 58. Ra6 Qf8 59. Qe3 Re8 60. Qd3 Qe7 61. Ra7 Rc8 62. Kh1 Qd8 63. Qe3 Ra8 64. Ra6 Qe8 65. Qxe8+ Rxe8 66. Ra7 Re3 67. Kh2 Rc3 68. Rxc7 Bxd5 69. Bxd6 Rxc4 70. Rxc4 Bxc4 71. Bc7 Bf1 72. Bxb6 Bxb5 73. Bg1 g5 74. fxg6 Kg7 75. Bd4 Kxg6 76. Kg3 h4+ 77. Kxh4 Bc6 78. Kg3 f5 79. Be3 Kf7 80. Kf2 Kg7 81. Bg5 Ba4 82. g3 Bc2 83. h4 Kf7 84. Be3 Bb3 85. h5 Bc2 86. Ke1 Kf6 87. Kd2 Be4 88. Bf4 Kf7 89. h6 Bd5 90. Kc3 Kg6 91. Bg5 Kh7 92. Kd4 Bc6 93. Bd2 f4 94. Bxf4 Bh1 95. Ke5 Bg2 96. g4 Bc6 97. Kf6 Bb5 98. g5 Bd3 99. Ke6 Bb5 100. Kd5 Ba4 101. Ke6 Be8 102. Ke5 Ba4 103. Be3 Bc2 104. Ke6 Kg6 105. Bd2 Ba4 106. Ke7 Bb3 107. Kf8 Bc4 108. Ba5 Bb3 109. Bc3 Kh7 110. Bg7 Bd1 111. Bd4 Bc2 112. Be5 Bg6 113. Bb2 Bc2 114. Bc1 Be4 115. Bb2 Bg6 116. Bf6 Bd3 117. Bd8 Bf5 118. Kf7 Bc2 119. Bb6 Bf5 120. Ke8 Kg6 121. Bd8 Be4 122. Kf8 Kh7 123. Kf7 Bd3 124. Bb6 Bc2 125. Kf6 Ba4 126. Be3 Be8 127. Bf2 Bg6 128. Be3 Bb1 129. Bf4 Bd3 130. Be5 Bb1 131. Ke7 Be4 132. Kf6 Bb1 133. Kf7 Bd3 134. Bf6 Bc4+ 135. Ke8 Bb3 136. Bb2 Kg6 137. Be5 Bg8 138. Bf4 Ba2 139. Bd6 Bf7+ 140. Ke7 Bc4 141. Bf4 Bf1 142. Kd7 Kh7 143. Bd6 Bb5+ 144. Ke7 Bf1 145. Bb4 Be2 146. Kf6 Bd3 147. Bc3 Bb1 148. Ke6 {50 moves rule} 1/2-1/2[/pgn]

[Chessqueen]

Note: I reverse engines playing the exact first 2 opening moves to see how Stockfish and Rubichess handle this Opening, Rubichess is not doing so good playing the Black side of this Opening

[pgn][Event "Perfect draw game"] [Date "2023.09.30"] [Round "?"] [White "Stockfish-windows-x86-64-avx2"] [Black "RubiChess-20230918_x86-64-avx2"] [Result "*"] [BlackElo "3520"] [ECO "B07"] [Opening "Pirc"] [Time "02:20:49"] [Variation "Lengfellner System"] [WhiteElo "3555"] [TimeControl "0+5"] [Termination "normal"] [PlyCount "295"] [WhiteType "program"] [BlackType "program"] ] 1. e4 e6 2. d4 d6 3. Nf3 {(Ng1-f3) +0.50/28 14} Nf6 {(Ng8-f6) -0.63/31 16} 4. Bd3 {(Bf1-d3 Nb8-d7) +0.83/32 20} Nbd7 {(Nb8-d7 O-O) -0.61/31 19} 5. c4 {(c2-c4 g7-g6) +0.78/31 19} g6 {(g7-g6) -0.61/34 19} 6. Nc3 {(Nb1-c3 Bf8-g7 O-O e6-e5 Bc1-e3 O-O h2-h3 e5xd4 Nf3xd4 Rf8-e8 Bd3-c2 a7-a6 Qd1-d2 Nd7-c5 f2-f3 Nc5-e6 Ra1-d1 Ne6xd4 Be3xd4 b7-b5 Qd2-f2 b5xc4 f3-f4 Bc8-b7 f4-f5 c7-c5 Bd4xc5 Nf6xe4 Bc2xe4 Bb7xe4 f5xg6 Be4xg6 Bc5-d4 Bg7xd4 Rd1xd4 Re8-e5 Nc3-d5 Re5-f5 Qf2-e3 Rf5xf1+ Kg1xf1) +0.76/35 19} Bg7 {(Bf8-g7 h2-h3 O-O O-O e6-e5 Bc1-e3 e5xd4 Nf3xd4 Nd7-e5 b2-b3 Ne5xd3 Qd1xd3 Rf8-e8 f2-f3 h7-h6 Qd3-d2 Kg8-h7 Ra1-e1 b7-b6 Be3-f2 Bc8-b7 Re1-d1 Qd8-e7 Nd4-e2 Kh7-g8 Bf2-g3 a7-a6 Rf1-e1 Kg8-h7 Bg3-f2 Nf6-h5 Nc3-d5 Bb7xd5) -0.74/34 19} 7. h3 {(h2-h3 e6-e5 Bc1-e3 e5xd4 Nf3xd4 O-O Qd1-d2 Rf8-e8 Bd3-c2 a7-a6 a2-a4 Nd7-e5 b2-b3 Ne5-c6 O-O Nc6xd4 Be3xd4 b7-b6 Ra1-e1 Bc8-b7 f2-f3 Ra8-b8 Re1-d1 a6-a5 Rd1-e1 Nf6-d7 Bd4xg7 Kg8xg7 f3-f4 Kg7-g8 Re1-e3 Nd7-c5 Nc3-d5 Bb7xd5 c4xd5) +0.77/33 20} O-O {(O-O) -0.64/33 19} 8. Be3 {(Bc1-e3 e6-e5 O-O e5xd4 Nf3xd4 Rf8-e8 Bd3-c2 a7-a6 Qd1-d2 Nd7-c5 f2-f3 Nc5-e6 Ra1-d1 Ne6xd4 Be3xd4 b7-b5 Qd2-f2 b5xc4 f3-f4 Bc8-b7 e4-e5 Nf6-d5 f4-f5 Nd5xc3 Bd4xc3 Re8xe5 Bc3xe5 Bg7xe5 f5xg6 f7xg6 Qf2-f7+ Kg8-h8 Qf7xc4 Qd8-g5 Qc4-g4 Qg5xg4 h3xg4 Kh8-g7 Bc2-b3 Kg7-h6 Rf1-f7 Bb7-c8 Rf7-f8 Be5xb2 Bb3-d5 Bc8xg4 Rf8xa8 Bg4xd1 Ra8xa6) +0.88/33 19} c5 {(c7-c5) -0.68/31 19} 9. d5 {(d4-d5 Rf8-e8) +0.71/31 19} Re8 {(Rf8-e8) -0.64/30 19} 10. dxe6 {(d5xe6 Re8xe6 O-O b7-b6 Qd1-c2 Bc8-b7 Ra1-d1 Qd8-e8 Qc2-c1 Ra8-d8 Rf1-e1 Qe8-f8 Bd3-b1 h7-h6 Be3-f4 Nf6-h5 Bf4-d2 Kg8-h7 Nc3-d5 Qf8-h8 b2-b3 Bg7-b2 Qc1-c2 Nd7-e5 Nf3xe5 Bb2xe5 f2-f4 Be5-d4+ Bd2-e3) +0.73/32 19} Rxe6 {(Re8xe6 O-O) -0.61/32 19} 11. O-O {(O-O b7-b6) +0.65/32 19} b6 {(b7-b6 Qd1-c2) -0.63/34 19} 12. Qc2 {(Qd1-c2 Bc8-b7 Ra1-d1 Qd8-f8 Rf1-e1 h7-h6 Be3-c1 Ra8-c8 Nc3-b5 a7-a6 Nb5-c3 Nd7-b8 Nc3-d5 Bb7xd5 c4xd5 Re6-e8 b2-b3 b6-b5 Bd3-f1 Nb8-d7 a2-a4 Rc8-b8 Nf3-d2 Re8-e7 g2-g3 Qf8-e8 Re1-e3 Nf6-h5 Kg1-g2 Nh5-f6 Bc1-b2) +0.69/33 19} Bb7 {(Bc8-b7 Ra1-d1) -0.61/33 19} 13. Rad1 {(Ra1-d1 Ra8-c8 Rf1-e1 h7-h6 Be3-f4 Nf6-h5 Bf4-d2 Qd8-f8 Nc3-d5 Re6-e8 g2-g3 Nd7-e5 Nf3xe5 Bg7xe5 b2-b3 Qf8-g7 Kg1-h2 Be5-d4 Re1-e2 Bb7xd5 c4xd5 Re8-e7 Bd2-c1 Nh5-f6 a2-a4 g6-g5) +0.62/30 20} Qe8 {(Qd8-e8) -0.57/33 19} 14. Qc1 {(Qc2-c1 Qe8-f8 Rf1-e1 Ra8-c8 Be3-f4 Nd7-e5 Nf3xe5 d6xe5 Bf4-g5 Nf6-e8 Qc1-c2 Bb7-c6 Bd3-e2 h7-h6 Bg5-h4 Bg7-f6 Bh4xf6 Ne8xf6 Be2-g4 Nf6xg4 h3xg4 Re6-d6 Nc3-d5 Bc6xd5 e4xd5 Rc8-e8 b2-b3 Qf8-g7 Qc2-d2) +0.72/32 19} Rd8 {(Ra8-d8) -0.61/30 19} 15. Rfe1 {(Rf1-e1 Qe8-f8 Bd3-b1 Nd7-b8 Be3-d2 Nb8-c6 Nc3-d5 h7-h6 b2-b3 Nf6-h5 Bd2-e3 Nh5-f6 Be3-f4 Nf6-h5 Bf4-d2 Kg8-h7 Qc1-c2 Bg7-a1 Nf3-h2 Ba1-g7 Qc2-d3 Bg7-d4 Bd2-e3 Bd4xe3 Qd3xe3 f7-f5 f2-f4 f5xe4 Bb1xe4 Rd8-e8) +0.77/33 19} Qf8 {(Qe8-f8) -0.73/29 19} 16. Bb1 {(Bd3-b1 Nd7-b8 Be3-f4 Nf6-h5 Bf4-d2 Nb8-c6 Nc3-d5 h7-h6 b2-b3 Rd8-c8 Re1-f1 Nh5-f6 Rd1-e1 Nf6-d7 Bd2-e3 Re6-e8 Qc1-d2 Nc6-e7 Nd5-c3 Rc8-d8 Nc3-b5 Ne7-c8 Be3-f4 Nd7-f6 Nb5-c3 Re8-e6 Re1-e3 Nc8-e7 Rf1-e1 Ne7-c6 Nc3-d5 Nf6-d7) +0.78/35 19} h6 {(h7-h6 Nf3-d2) -0.67/33 19} 17. Nd2 {(Nf3-d2 Nf6-h5) +0.65/31 19} a6 {(a7-a6) -0.69/30 19} 18. b3 {(b2-b3 Rd8-c8) +0.82/31 19} Rde8 {(Rd8-e8) -0.62/32 19} 19. Nd5 {(Nc3-d5 Re8-c8) +0.85/30 19} Rc8 {(Re8-c8) -0.63/34 19} 20. f4 {(f2-f4) +0.89/30 19} b5 {(b6-b5 Be3-f2 Re6-e8 Nd2-f3 b5-b4 Nd5xf6+ Nd7xf6 e4-e5 d6xe5 f4xe5 Nf6-h7 Bb1-e4 Bb7xe4 Re1xe4 Qf8-e7 Rd1-d5 Nh7-f8 Re4-e1 Nf8-e6 Bf2-e3 h6-h5 Qc1-d2 a6-a5 Nf3-g5 Ne6xg5 Be3xg5 Qe7-c7 Bg5-f4 Re8-e6 Rd5-d7 Qc7-c6 Rd7-d6 Qc6-c7 Rd6xe6 f7xe6 Qd2-d6 Qc7-f7 Re1-f1) -0.63/32 19} 21. Bf2 {(Be3-f2 Re6-e8 Nd2-f3 b5-b4 Bb1-d3 a6-a5 Bf2-g3 a5-a4 Qc1-c2 Nf6-h5 Bg3-h2 Nh5-f6 Kg1-h1 Nf6xd5 c4xd5 Bg7-c3 Re1-e2 a4xb3 a2xb3 Nd7-b6 Bd3-b5 Re8-d8 Bh2-g3 Rc8-a8 Bg3-h4 Rd8-c8 e4-e5 Bb7xd5 e5-e6 f7xe6 Re2xe6 Bd5xe6 Qc2xg6+ Kg8-h8 Nf3-e5 Nb6-d5 Qg6xe6 d6xe5 Rd1xd5 e5xf4 Rd5-h5 Bc3-g7) +0.91/33 19} Ree8 {(Re6-e8) -0.48/30 19} 22. Nf3 {(Nd2-f3 b5-b4 Bb1-d3 a6-a5 Bf2-g3 a5-a4 Qc1-c2 a4xb3 a2xb3 Nf6-h5 Bg3-h2 Nh5-f6 Kg1-h1 Nf6xd5 c4xd5 Bg7-c3 Re1-e2 Nd7-b6 Bd3-b5 Re8-d8 Bh2-g3 Rc8-a8 f4-f5 g6-g5 Bb5-c6 Bb7xc6 d5xc6 Ra8-c8 Qc2-d3 Rc8xc6 e4-e5 c5-c4 b3xc4 Nb6xc4 e5-e6 Nc4-b2 Qd3-d5) +0.91/33 19} b4 {(b5-b4 Nd5xf6+ Nd7xf6 e4-e5 d6xe5 f4xe5 Nf6-h7 Bb1-e4 Bb7xe4 Re1xe4 Qf8-e7 Rd1-d5 Nh7-f8 Re4-e1 Nf8-e6 Bf2-e3 h6-h5 Qc1-d2 Qe7-f8 Be3-g5 a6-a5 Bg5-f6 a5-a4 Rd5-d7 a4xb3 a2xb3 Bg7-h6 Nf3-g5 Rc8-a8 h3-h4 Bh6xg5 Bf6xg5 Ne6xg5 Qd2xg5 Re8-e6 Re1-d1 Ra8-e8) -0.70/34 19} 23. Bd3 {(Bb1-d3 a6-a5) +0.89/34 19} a5 {(a6-a5 Bf2-g3) -0.67/31 19} 24. Bg3 {(Bf2-g3) +0.85/32 20} a4 {(a5-a4) -0.72/31 19} 25. Qc2 {(Qc1-c2) +0.96/31 19} Nh5 {(Nf6-h5) -0.60/31 19} 26. Bh2 {(Bg3-h2 Nh5-f6) +0.84/31 19} Nhf6 {(Nh5-f6 Kg1-h1 a4-a3 Re1-e2 Bb7-a8 Qc2-d2 Ba8-c6 Qd2-e1 Bc6-b7 Nf3-d2 Kg8-h8 Qe1-g3 Nf6-h5 Qg3-f3 Bg7-d4 Rd1-e1 Qf8-g7 g2-g4 Nh5-f6 h3-h4 Rc8-d8 g4-g5 Nf6-h5 Qf3-h3 Bd4-c3 Re1-f1 f7-f5 Nd2-f3 Qg7-f7 Bd3-b1 Bb7xd5 c4xd5 f5xe4 Re2xe4 Qf7xd5) -0.72/32 19} 27. Kh1 {(Kg1-h1) +0.92/31 19} a3 {(a4-a3) -0.72/32 19} 28. Re2 {(Re1-e2) +0.88/31 19} Nb8 {(Nd7-b8 Rd1-f1) -0.63/32 19} 29. Qd2 {(Qc2-d2) +0.95/32 19} Rcd8 {(Rc8-d8 Qd2-e1 Nb8-c6 Qe1-h4 Nf6-d7 Bh2-g1 Rd8-c8 Bd3-b1 Nc6-e7 Nd5xe7+ Qf8xe7 Qh4xe7 Re8xe7 Rd1xd6 Nd7-f8 e4-e5 Nf8-e6 Bg1-h2 Re7-e8 Bb1-e4 Bb7xe4 Re2xe4 Bg7-f8 Rd6-d5 Ne6-c7 Rd5-d2 f7-f5 Re4-e2 Nc7-e6 Rd2-d5 Re8-d8 Re2-d2 g6-g5 f4xg5 h6xg5) -0.84/34 19} 30. Qe1 {(Qd2-e1 Nf6xd5) +0.88/31 19} Nxd5 {(Nf6xd5) -0.53/32 19} 31. cxd5 {(c4xd5) +1.03/33 19} Bc3 {(Bg7-c3 Qe1-g3) -0.73/32 19} 32. Qg3 {(Qe1-g3 Nb8-d7) +0.98/31 19} Ba6 {(Bb7-a6 Nf3-d2 Kg8-h7 Bd3xa6 Nb8xa6 f4-f5 g6xf5 Qg3-f2 f5xe4 Qf2-f5+ Kh7-h8 Nd2xe4 Qf8-g7 Ne4xc3 b4xc3 Re2xe8+ Rd8xe8 Bh2xd6 Kh8-g8 Rd1-g1 Qg7-g5 Qf5-d3 Re8-d8 Qd3xa6 Qg5-g6 Qa6xa3 Qg6xd6 Rg1-c1 Qd6xd5 Rc1xc3 Qd5-d1+ Kh1-h2 Qd1-d6+ Rc3-g3+ Kg8-h7 Qa3-c1 Rd8-g8 Qc1-c3 Rg8-g6 Qc3-f3 Rg6-f6 Qf3-b7 Qd6-f4 Qb7-e7) -0.78/32 19} 33. Nd2 {(Nf3-d2) +1.07/31 20} Kg7 {(Kg8-g7) -1.01/32 19} 34. Bxa6 {(Bd3xa6 Nb8xa6) +1.12/31 19} Nxa6 {(Nb8xa6) -0.74/28 19} 35. f5 {(f4-f5 Na6-c7) +1.16/32 19} Nc7 {(Na6-c7 Nd2-c4) -1.22/31 19} 36. Nc4 {(Nd2-c4 Bc3-d4 Nc4xd6 Rd8xd6 Qg3xd6 Qf8xd6 Bh2xd6 Nc7-b5 f5-f6+ Kg7xf6 e4-e5+ Kf6-g5 Rd1xd4 c5xd4 Bd6xb4 Nb5-c3 Re2-d2 Nc3xd5 Bb4xa3 Re8xe5 Rd2xd4 Re5-e1+ Kh1-h2 Nd5-e3 Ba3-c5 h6-h5 a2-a4 Re1-a1 Rd4-b4 Ne3-f1+ Kh2-g1) +1.37/33 19} Nb5 {(Nc7-b5 Rd1-f1 g6-g5 f5-f6+ Kg7-h8 Nc4-a5 Bc3-e5 Qg3-g4 Nb5-c3 Na5-c6 Nc3xe2 Bh2xe5 Re8xe5 Nc6xe5 Ne2-f4 Ne5-c4 Nf4-g6 Qg4-g3 Kh8-h7 Rf1-f5 Kh7-h8 Kh1-g1 Kh8-h7 Kg1-h2 Kh7-h8 Rf5-f1 Kh8-g8 Kh2-g1 Kg8-h7 Qg3-g4 Kh7-h8 Rf1-f5 Rd8-e8 h3-h4 Ng6xh4 Rf5-f1) -0.99/33 19} 37. Rf1 {(Rd1-f1 g6-g5 f5-f6+ Kg7-h8 h3-h4 Bc3-d4 h4xg5 Nb5-c3 g5-g6 f7xg6 Qg3xg6 Nc3xe2 Nc4xd6 Re8-e7 Rf1-f3 Re7-h7 f6-f7 Qf8-g7 Qg6-f5 Rd8-f8 e4-e5 h6-h5 Qf5-c2 Bd4xe5 Qc2xe2 Be5xh2 Kh1xh2 h5-h4 Qe2-e1 h4-h3 g2-g3 Rh7-h5 Nd6-c4 Rh5xd5 Qe1-e7 Rd5-g5) +1.43/31 19} g5 {(g6-g5) -0.72/33 19} 38. f6+ {(f5-f6+) +1.58/30 19} Kh8 {(Kg7-h8 Nc4-a5) -0.49/32 19} 39. h4 {(h3-h4 Qf8-g8) +1.49/34 19} Qg8 {(Qf8-g8 h4xg5) -0.95/33 19} 40. hxg5 {(h4xg5 Qg8-h7 Re2-e3 Bc3-d4 Re3-f3 Re8-g8 Qg3-h4 Rg8xg5 Rf3-h3 Kh8-g8 Nc4-a5 Rd8-e8 Na5-c6 Qh7xe4 Qh4xe4 Re8xe4 Rh3xh6 Bd4xf6 Rh6xf6 Re4-e2 Rf6-f2 Re2xf2 Rf1xf2 Kg8-f8 Nc6-a7 Nb5xa7 Bh2xd6+ Kf8-e8 Rf2-e2+ Ke8-d7 Bd6xc5 Na7-b5 Bc5xb4 Rg5xd5 Re2-e7+ Kd7-c8 Re7xf7) +1.62/32 19} Qg6 {(Qg8-g6) -0.87/31 19} 41. Qh3 {(Qg3-h3 Kh8-g8 Nc4-a5 Nb5-d4 Re2-f2 h6xg5 Na5-b7 c5-c4 b3xc4 Bc3-b2 Nb7xd8 Re8xd8 Qh3-g4 b4-b3 a2xb3 Rd8-a8 e4-e5 d6xe5 Bh2xe5 Nd4-c2 Rf2-e2 Nc2-d4 Be5xd4 Bb2xd4 Qg4xd4 Qg6-h5+ Kh1-g1 Qh5xe2 d5-d6 a3-a2 Rf1-a1 g5-g4 d6-d7 g4-g3 d7-d8Q+ Ra8xd8 Qd4xd8+ Kg8-h7) +2.14/31 19} Kg8 {(Kh8-g8 Qh3xh6 Qg6xh6 g5xh6 Bc3-d4 g2-g4 Nb5-c3 Rf1-e1 Bd4xf6 Nc4xd6 Nc3xe2 Nd6xe8 Rd8xe8 Re1xe2 c5-c4 b3xc4 b4-b3 a2xb3 Bf6-b2 e4-e5 a3-a2 Re2-e1 Bb2-c3 Re1-f1 Re8-a8 Kh1-g2 a2-a1R Rf1xa1 Ra8xa1 Bh2-f4 Ra1-a3 c4-c5 Ra3-a5 c5-c6 Ra5xd5 e5-e6 f7xe6 c6-c7) -1.15/33 19} 42. Na5 {(Nc4-a5) +2.28/29 19} Nd4 {(Nb5-d4 Re2-f2) -1.82/32 19} 43. Ref2 {(Re2-f2 Re8xe4) +2.20/31 19} Rxe4 {(Re8xe4) -1.71/31 19} 44. Nc6 {(Na5-c6 Nd4xc6 d5xc6 Rd8-e8 c6-c7 h6xg5 Qh3-d7 Kg8-h7 c7-c8R Re8xc8 Qd7xc8 Bc3-d4 Rf2-f5 Re4-h4 g2-g3 Rh4-h6 Qc8-b7 Bd4-e5 Qb7-f3 g5-g4 Qf3-e3 Rh6-h5 Rf5xh5+ Qg6xh5 Qe3-d3+ Kh7-g8 Qd3-d5 Qh5-h3 Rf1-f2 Qh3-h5 Qd5-e4 Kg8-h8 Qe4-a8+ Kh8-h7 Qa8-g2 Kh7-h8 Qg2-e4 Kh8-g8 Kh1-g2 Kg8-h8 Qe4-a8+ Kh8-h7 Qa8-d5 Qh5-h3+ Kg2-g1 Kh7-g6 Qd5-a8 Qh3-h7 Qa8-e4+ Kg6-h6 Qe4xh7+ Kh6xh7) +2.82/35 19} Nxc6 {(Nd4xc6 d5xc6 h6xg5 c6-c7 Rd8-e8 Qh3-d7 Kg8-h7 c7-c8Q Re8xc8 Qd7xc8 Bc3-d4 Rf2-f5 Re4-h4 g2-g3 Rh4-h3 Qc8-f8 Bd4-e5 Qf8-g7+ Qg6xg7 f6xg7 f7-f6 Rf5xf6 Be5xf6 Rf1xf6 Kh7xg7 Rf6xd6 Rh3-h8 Kh1-g2 Rh8-c8 Bh2-g1 c5-c4 b3xc4 Rc8xc4 Bg1-d4+ Kg7-f7 Kg2-f3 Kf7-e7 Rd6-d5 b4-b3 a2xb3) -2.46/34 19} 45. dxc6 {(d5xc6 h6xg5 c6-c7 Rd8-e8 Qh3-d7 Kg8-h7 c7-c8R Re8xc8 Qd7xc8 Bc3-d4 Rf2-f5 Re4-h4 g2-g3 Rh4-h6 Qc8-b7 Qg6-h5 Qb7-g2 Qh5-g4 Qg2-c2 Kh7-h8 Qc2-d2 Rh6-h5 Qd2-d1 Qg4-h3 Qd1-e2 Bd4-e5 Rf1-f2 g5-g4 Qe2-e4 Kh8-g8 Rf5xh5 Qh3xh5 Kh1-g2 Kg8-h8 Qe4-a8+ Kh8-h7) +3.21/35 19} hxg5 {(h6xg5 c6-c7) -2.31/35 19} 46. c7 {(c6-c7 Rd8-e8 Qh3-d7 Kg8-h7 c7-c8R Re8xc8 Qd7xc8 Bc3-d4 Rf2-f5 Re4-h4 g2-g3 Rh4-h6 Qc8-b7 Bd4-e5 Qb7-f3 g5-g4 Qf3-e3 Kh7-h8 Qe3-g5 Qg6-h7 Qg5-g7+ Qh7xg7 f6xg7+ Kh8xg7 Rf5xf7+ Kg7-g6 Kh1-g2 Rh6-h8 Rf7-c7 Rh8-e8 Bh2-g1 Be5-c3 Rc7-c6 Re8-e2+ Rf1-f2 Re2-e6 Rc6-a6 Kg6-g7 Rf2-c2 Kg7-f7 Bg1-f2 Kf7-f6 Kg2-f1 Kf6-f5 Rc2-e2 Re6-h6 Kf1-g1 Bc3-e5 Kg1-g2 Rh6-h8 Ra6-a7 Rh8-h3) +3.37/35 19} Rde8 {(Rd8-e8 Qh3-d7) -2.50/36 19} 47. Qd7 {(Qh3-d7 Kg8-h7 c7-c8Q Re8xc8 Qd7xc8 Bc3-d4 Rf2-f5 Re4-h4 g2-g3 Rh4-h6 Qc8-b7 Bd4-e5 Qb7-f3 g5-g4 Qf3-e3 Rh6-h5 Rf5xh5+ Qg6xh5 Qe3-e4+ Qh5-g6 Qe4-d5 Qg6-h5 Rf1-f4 Qh5-g6 Rf4-f2 Kh7-g8 Bh2-g1 Be5xg3 Rf2-f5 Bg3-e5 Qd5-a8+ Kg8-h7 Qa8-e4 Be5xf6 Kh1-g2 Kh7-g7 Rf5-f4 Qg6xe4+ Rf4xe4 Bf6-b2 Re4xg4+ Kg7-f6 Kg2-f3 Kf6-e6) +3.25/36 20} Kh7 {(Kg8-h7) -2.66/36 19} 48. c8=Q {(c7-c8Q Re8xc8 Qd7xc8 Bc3-d4 Rf2-f5 Re4-h4 g2-g3 Rh4-h6 Qc8-b7 Bd4-e5 Qb7-f3 g5-g4 Qf3-e3 Rh6-h5 Rf5xh5+ Qg6xh5 Qe3-e4+ Qh5-g6 Qe4-d5 Qg6-h5 Rf1-f4 Kh7-h6 Rf4-f2 Kh6-h7 Kh1-g2 Kh7-h8 Kg2-f1 Qh5-g6 Bh2-g1 Be5xg3 Rf2-f5 Bg3-e5 Qd5-a8+ Kh8-h7 Qa8-e4 Be5xf6 Kf1-g2 Kh7-h6 Bg1-f2 Kh6-g7 Rf5-f4 Qg6xe4+ Rf4xe4 Bf6-c3 Re4xg4+ Kg7-f6 Kg2-f3 Kf6-e6 Kf3-e2 f7-f5 Rg4-h4 Bc3-f6) +3.47/34 19} Rxc8 {(Re8xc8 Qd7xc8 Bc3-d4 Rf2-f5 Re4-h4 g2-g3 Rh4-h6 Qc8-b7 Bd4-e5 Qb7-d5 c5-c4 Kh1-g1 c4xb3 Qd5xb3 Be5-d4+ Kg1-h1 Bd4-e5 Rf5-f2 Qg6-e4+ Qb3-f3 Qe4xf3+ Rf2xf3 Kh7-g6 Kh1-g2 Rh6-h8 Rf3-b3 Be5-c3 g3-g4 Rh8-h4 Bh2xd6 Rh4xg4+ Kg2-f3 Rg4-c4 Bd6-e7 Rc4-f4+ Kf3-e2 Rf4-e4+ Ke2-d3 Re4-d4+ Kd3-e3 Rd4-h4 Be7-c5 Rh4-c4 Bc5-a7 Rc4-c6 Ke3-d3 Bc3xf6 Ba7-e3 Bf6-c3 Rf1-b1 f7-f5) -2.66/35 19} 49. Qxc8 {(Qd7xc8 Bc3-d4 Rf2-f5 Re4-h4 g2-g3 Rh4-h6 Qc8-b7 Qg6-h5 Qb7-g2 Bd4-e5 Qg2-c2 Kh7-g8 Qc2-d2 Rh6-g6 Rf1-f2 Qh5-g4 Qd2-e2 Qg4xe2 Rf2xe2 Be5-b2 Bh2-g1 Rg6xf6 Rf5xg5+ Kg8-f8 Kh1-g2 c5-c4 Rg5-a5 c4xb3 a2xb3 Rf6-e6 Re2xe6 f7xe6 Bg1-e3) +3.57/31 20} Bd4 {(Bc3-d4 Rf2-f5 Re4-h4 g2-g3 Rh4-h6 Qc8-c6 Bd4-e5 Qc6-d5 c5-c4 Kh1-g1 c4xb3 Qd5xb3 Be5-d4+ Kg1-h1 Bd4-e5 Rf5-f2 Qg6-e4+ Qb3-f3 Qe4xf3+ Rf2xf3 Kh7-g6 Kh1-g2 Rh6-h8 Rf3-b3 Be5-c3 g3-g4 Rh8-h4 Bh2xd6 Rh4xg4+ Kg2-f3 Rg4-h4 Bd6-e7 Rh4-f4+ Kf3-e2 Rf4-e4+ Ke2-d3 Re4-d4+ Kd3-c2 Rd4-d2+ Kc2-b1 Rd2-d4 Rf1-f2 Rd4-e4 Kb1-c1 Re4-c4 Kc1-c2 Rc4-e4 Rf2-g2 Bc3xf6 Be7xb4) -2.82/36 19} 50. Rf5 {(Rf2-f5 Re4-h4 g2-g3 Rh4-h6 Qc8-b7 Qg6-h5 Qb7-g2 Qh5-g4 Qg2-c2 Kh7-g8 Qc2-d3 Kg8-f8 Qd3-f3 Qg4xf3+ Rf1xf3 Kf8-e8 Kh1-g2 Ke8-d7 Bh2-g1 Bd4-c3 Rf5xg5 Rh6-h8 Rg5-g7 Kd7-e6 Rg7-g4 Ke6-d5 Rg4-c4 Rh8-e8 Bg1-e3 Re8-g8 Be3-f4 Bc3-d4 Rc4xd4+ c5xd4 Bf4-d2) +3.57/34 19} Rh4 {(Re4-h4 g2-g3) -2.68/35 19} 51. g3 {(g2-g3 Rh4-h6 Qc8-b7 Qg6-h5 Qb7-g2 Bd4-e5 Qg2-c2 Kh7-h8 Rf1-f2 Be5-d4 g3-g4 Qh5xg4 Qc2-e2 Qg4xe2 Rf2xe2 Kh8-h7 Rf5xg5 Bd4xf6 Rg5-f5 Kh7-g7 Kh1-g2 d6-d5 Rf5xd5 c5-c4 Rd5-a5 Rh6-g6+ Kg2-h1) +3.74/31 19} Rh6 {(Rh4-h6) -2.83/34 19} 52. Qb7 {(Qc8-b7 Qg6-h5 Qb7-g2 Bd4-e5 Qg2-c2 Qh5-g6 Rf1-f2 g5-g4 Rf5-g5 Qg6xc2 Rg5-g7+ Kh7-h8 Rf2xc2 Rh6xf6 Rg7xg4 Rf6-f1+ Bh2-g1 Be5-g7 Kh1-g2 Rf1-b1 Bg1-e3 Rb1-b2 Rc2-f2 f7-f5 Rg4-c4 Bg7-c3 Kg2-f3 Kh8-g8 Be3-c1 Rb2xf2+ Kf3xf2 d6-d5) +3.69/32 20} Be5 {(Bd4-e5 Qb7-d5) -2.66/34 19} 53. Qf3 {(Qb7-f3 g5-g4 Qf3-e3 Rh6-h5 Rf5xh5+ Qg6xh5 Qe3-e4+ Qh5-g6 Qe4-d5 Kh7-g8 Kh1-g2 Be5xf6 Bh2-g1 Qg6-c2+ Rf1-f2 Qc2-g6 Qd5-f5 Qg6xf5 Rf2xf5 Bf6-b2 Rf5-g5+ Kg8-f8 Rg5xg4 Kf8-e7 Rg4-c4 f7-f5 Kg2-f3 Ke7-e6 g3-g4 f5xg4+ Rc4xg4 Ke6-d7 Bg1-e3 Bb2-e5 Kf3-e2 Be5-b2 Ke2-d1 Kd7-e6 Rg4-g1 Ke6-f5 Rg1-f1+ Kf5-e4) +3.85/35 19} g4 {(g5-g4 Qf3-d5 Rh6-h5 Rf5xh5+ Qg6xh5 Rf1-f2 Kh7-g8 Qd5-c4 Kg8-h7 Kh1-g2 Qh5-h3+ Kg2-g1 Qh3-h5 Qc4-d5 Kh7-h8 Kg1-f1 Qh5-g6 Kf1-g2 Qg6-h5 Qd5-a8+ Kh8-h7 Qa8-e4+ Qh5-g6 Qe4-d5 Qg6-h5 Kg2-f1 Qh5-g6 Bh2-g1 Be5xg3 Rf2-f5 Bg3-e5 Qd5-e4 Be5xf6 Rf5-f4 Qg6xe4 Rf4xe4 g4-g3 Kf1-g2 Kh7-g6 Kg2xg3) -2.95/34 19} 54. Qe3 {(Qf3-e3 Rh6-h5 Rf5xh5+ Qg6xh5 Qe3-e4+ Qh5-g6 Qe4-d5 Qg6-h5 Rf1-f2 Kh7-h6 Qd5-e4 Qh5-g6 Rf2-f5 Be5xf6 Bh2-g1 Kh6-g7 Kh1-g2 Kg7-f8 Rf5-f4 Qg6xe4+ Rf4xe4 Bf6-b2 Re4xg4 Kf8-e7 Rg4-c4 f7-f5 Kg2-f3 Bb2-e5 g3-g4 f5xg4+ Rc4xg4 Ke7-d7 Bg1-e3 Kd7-e6 Kf3-e2 Be5-f6 Rg4-f4 Bf6-e5 Rf4-h4 Be5-g3 Rh4-h1 Bg3-e5 Ke2-d3 Ke6-d5 Kd3-c2 Kd5-e4) +3.86/38 19} Rh5 {(Rh6-h5 Rf5xh5+ Qg6xh5 Qe3-e2 Kh7-h8 Rf1-f2 Kh8-h7 Qe2-c4 Kh7-g8 Qc4-e4 Kg8-h8 Qe4-d3 Qh5-h7 Qd3-e2 Qh7-h5 Qe2-e4 Kh8-g8 Kh1-g2 Qh5-g6 Qe4xg6+ f7xg6 Bh2-g1 Kg8-f7 Rf2-c2 Be5-c3 Bg1-e3 c5-c4 Rc2xc3 b4xc3 b3xc4 Kf7xf6 Be3-d4+ Kf6-f5 Bd4xc3 Kf5-e4 Kg2-f2) -3.02/34 19} 55. Rxh5+ {(Rf5xh5+ Qg6xh5 Qe3-e4+ Qh5-g6 Qe4-d5 Qg6-h5 Rf1-f2 Kh7-h6 Qd5-e4 Qh5-g6 Rf2-f5 Be5xf6 Bh2-g1 Kh6-g7 Kh1-g2 Bf6-c3 Bg1-e3 Qg6-e6 Qe4xe6 f7xe6 Rf5-f4 e6-e5 Rf4xg4+ Kg7-f8 Rg4-c4 Kf8-g8 Kg2-f3 Kg8-g7 g3-g4 Kg7-g6 Kf3-e2 Bc3-b2 g4-g5 Bb2-d4 Rc4-c1 Bd4-b2 Rc1-d1 Bb2-d4 Be3xd4 c5xd4) +4.31/34 19} Qxh5 {(Qg6xh5) -3.07/37 19} 56. Qe4+ {(Qe3-e4+ Qh5-g6 Qe4-d5 Qg6-h5 Rf1-f2 Kh7-h6 Qd5-e4 Qh5-g6 Rf2-f5 Be5xf6 Bh2-g1 Kh6-g7 Kh1-g2 Kg7-f8 Rf5-f4 Qg6xe4+ Rf4xe4 Bf6-c3 Re4xg4 Kf8-e7 Rg4-c4 Ke7-d7 g3-g4 f7-f6 Bg1-e3 Kd7-e6 Kg2-f3 f6-f5 g4-g5 Ke6-f7 Kf3-e2 Bc3-e5 Rc4-h4 Kf7-g7 Be3-d2 d6-d5 Ke2-d1 Kg7-g8 Rh4-h1 f5-f4 Kd1-c2) +4.36/35 19} Kg8 {(Kh7-g8 Rf1-f2 Kg8-h8 Qe4-d3 Qh5-h7 Qd3-e2 Qh7-h5 Qe2-e4 Kh8-g8 Qe4-a8+ Kg8-h7 Qa8-d5 Qh5-g6 Kh1-g2 Qg6-h5 Kg2-f1 Qh5-g6 Bh2-g1 Be5xg3 Rf2-f5 Bg3-e5 Qd5-e4 Be5xf6 Rf5-f4 g4-g3 Kf1-g2 Qg6xe4+ Rf4xe4 Bf6-c3 Kg2xg3 Kh7-g6 Kg3-f3 f7-f5 Re4-c4 Bc3-e5 Bg1-e3 Kg6-f6 Rc4-h4 Kf6-e6 Kf3-e2 Ke6-d5 Be3-d2 Kd5-e6 Bd2-c1 Ke6-d5 Ke2-d3 Kd5-c6 Kd3-e2) -3.16/40 19} 57. Rf2 {(Rf1-f2 Qh5-g5 Bh2-g1 Be5xf6 Qe4-a8+ Kg8-g7 Rf2-h2 Bf6-d8 Qa8-e4 Qg5-f6 Qe4xg4+ Qf6-g6 Qg4-f3 Bd8-g5 Qf3-a8 Bg5-h6 g3-g4 Qg6-g5 Qa8-f3 Qg5-g6 g4-g5 Bh6xg5 Rh2-g2 f7-f6 Rg2-e2 Qg6-h7+ Bg1-h2 Qh7-b1+ Kh1-g2 Qb1-g6 Bh2xd6 Bg5-f4+ Kg2-f1 Bf4xd6 Re2-g2 Qg6-g5 Rg2xg5+ f6xg5 Qf3-d3 Bd6-e5 Qd3-d8) +4.68/32 19} Kh8 {(Kg8-h8 Qe4-a8+) -3.14/38 19} 58. Rf5 {(Rf2-f5 Qh5-h6 Qe4xg4 Be5xf6 Rf5-h5 Qh6xh5 Qg4xh5+ Kh8-g7 Bh2-g1 Bf6-e7 Bg1xc5 d6xc5 Qh5-e5+ Be7-f6 Qe5xc5 Bf6-c3 Qc5-d6 Kg7-g8 Kh1-g2 Bc3-g7 Qd6xb4 f7-f5 Qb4-c4+ Kg8-f8 Qc4-c8+ Kf8-e7 Kg2-h1 Ke7-d6 Qc8-a6+ Kd6-c7) +6.56/35 20} Qg6 {(Qh5-g6 Bh2-g1) -3.65/32 19} 59. Rxe5 {(Rf5xe5) +10.10/38 19} Qxe4+ {(Qg6xe4+ Re5xe4 d6-d5 Re4-e8+ Kh8-h7 Bh2-g1 c5-c4 Bg1-d4 Kh7-g6 Kh1-g2 Kg6-f5 Re8-e7 Kf5-g6 Kg2-f2 c4-c3 Re7-e1 c3-c2 Re1-c1 Kg6-f5 Kf2-e3 Kf5-e6 Bd4-c5 Ke6xf6 Bc5-d4+ Kf6-e7 Rc1xc2 Ke7-d7 Ke3-e2 f7-f5 Ke2-e3 Kd7-e8 Ke3-f4 Ke8-d7 Rc2-c1 Kd7-e8 Bd4-c5 Ke8-d7 Bc5-g1 Kd7-e8 Kf4-g5 Ke8-d7 Bg1-d4 f5-f4 Kg5-h4 f4xg3 Kh4-h5) -5.73/34 19} 60. Rxe4 {(Re5xe4 Kh8-h7 Re4xg4 d6-d5 Rg4-g7+ Kh7-h8 Bh2-g1 c5-c4 Rg7xf7 c4xb3 Rf7-e7 b3xa2 Re7-e8+ Kh8-h7 f6-f7 a2-a1Q f7-f8Q Qa1-h8 Qf8xh8+ Kh7-g6 Bg1-d4 a3-a2 Qh8-g7+ Kg6-f5 Re8-e5+) +M13/44 19} d5 {(d6-d5 Re4-e8+ Kh8-h7 Bh2-g1 d5-d4 Re8-e1 Kh7-g6 Re1-c1 Kg6xf6 Rc1xc5 d4-d3 Bg1-e3 Kf6-g6 Be3-d2 f7-f6 Rc5-c4 Kg6-f7 Kh1-g1 f6-f5 Kg1-f2 Kf7-f6 Bd2-f4 Kf6-e6 Kf2-f1 Ke6-d5 Kf1-e1 Kd5-e6 Rc4-d4 Ke6-f7 Ke1-d1 Kf7-f6 Rd4-d5 Kf6-g7 Rd5-d7+ Kg7-h8 Rd7-d8+ Kh8-h7 Kd1-c1 Kh7-g7 Rd8-b8 Kg7-f6 Kc1-d1 Kf6-e7 Rb8-c8 Ke7-f7 Rc8-h8 Kf7-e6) -6.12/39 19} 61. Rxg4 {(Re4xg4 Kh8-h7 Rg4-g7+ Kh7-h8 Rg7xf7 d5-d4 Rf7-d7 d4-d3 f6-f7 Kh8-g7 g3-g4 d3-d2 Bh2-e5+ Kg7-g6 f7-f8Q d2-d1Q+ Rd7xd1 Kg6-g5 Qf8-f5+ Kg5-h4 Qf5-h5+) +M11/49 19} d4 {(d5-d4) -9.47/35 19} *[/pgn]

[Frank Quisinsky]

Hi,

analyze the draw games with stronger engines, you will find out the answere is "no".
If you are using Stockfish (strongest) ... give Stockfish more time as in the eng-eng game.

In most of cases all is a question of depth of search.

But after all ...
With lesser pieces on board in equal positions the probability is high that most of top engines produced a draw. So I am thinking often engines produced the optimal way of playing this games.

In my humble opinion :
In times today the secret between TOP-Engines is the middle-game with many pieces on board, in 95% no longer the endgames.

Most interesting today to find out which of the engines are able to play the middle-game with a lot of aggressiveness.
The stronger the engines, more interesting the middle-game.

Best
Frank

[Frank Quisinsky]

What I like to see is a ponder-quote to the end of the game.
Engine are able to give the information: 72% ponder hits.

Or better ...
53% ponder hits with more as 16 pieces on board
71% ponder hits with lesser as 16 pieces on board

A ponder-hit quote a good way of manipulation draws. So engine can give faster a draw if the ponder-hit quote is high.
A lot of engines like it to make a pawn move before 50-rules ended in absolutely clear draw-position.



For us nice to see and a good indicator for such questions you like to give.

[Chessqueen]

What I like to see is a ponder-quote to the end of the game.
Engine are able to give the information: 72% ponder hits.

Or better ...
53% ponder hits with more as 16 pieces on board
71% ponder hits with lesser as 16 pieces on board

A ponder-hit quote a good way of manipulation draws. So engine can give faster a draw if the ponder-hit quote is high.
A lot of engines like it to make a pawn move before 50-rules ended in absolutely clear draw-position.



For us nice to see and a good indicator for such questions you like to give.

Another thing that top engines can do is to check every move after move 4 of any opening book and before playing it, if it find that the search of the top engine is better than the stored Opening move after the 4th move the engine will not play it, and instead make the move found by its search , in that way moves stored on any opening books that are not as good as the move found by the top engine would automatically be stop and the engine would continue with its owns search

[Chessqueen]

What I like to see is a ponder-quote to the end of the game.
Engine are able to give the information: 72% ponder hits.

Or better ...
53% ponder hits with more as 16 pieces on board
71% ponder hits with lesser as 16 pieces on board

A ponder-hit quote a good way of manipulation draws. So engine can give faster a draw if the ponder-hit quote is high.
A lot of engines like it to make a pawn move before 50-rules ended in absolutely clear draw-position.



For us nice to see and a good indicator for such questions you like to give.

Another thing that top engines can do is to check every move after move 4 of any opening book and before playing it, if it find that the search of the top engine is better than the stored Opening move after the 4th move the engine will not play it, and instead make the move found by its search , in that way moves stored on any opening books that are not as good as the move found by the top engine would automatically be stop and the engine would continue with its owns search

I decided to continue with my experiment that I said I was going to hold the same Tournament match but only with the first 6 engines which are on the top list of Graham tournament, I restricted the LowDraw1000.cgb book to 4 moves depth for Stockfish, Berserk and Rubichess, whereas, the other engines opening Book are restricted deeper to a 8 moves Depth. Your Prediction was correct Graham.
NOTE: I should replace Clover 6.0 with Koivisto 9.0

19.5 - Stockfish 16 64-bit (Using 4 moves depth)
14.0 - Berserk 11.1 64-bit (Using 4 moves depth)
13.5 - RubiChess 20230918 64-bit (Using 4 moves depth)
11.5 - CS Tal 2.00 64-bit (Using 8 moves depth)
11.0 - Caissa 1.12 64-bit (Using 8 moves depth)
10.5 - Clover 6.0 64-bit (Using 8 moves depth)