FlipMind benchmark result (2026-11-13) Platform: ARM64 build, Apple M4 (10 cores), macOS Engine: Edax 4.5.6 (official source, arm64) Problems: FFO 33-51 (FFO endgame tests #33-#51, 19 positions, 20-27 empties) Mode: BEST (best move and its exact score) Conditions: 10 threads, no book, engines alternated, 3 rounds Time: total solve time reported by the engine Correct: 19/19 Average: 6.966 s (rounds: 6.978 / 6.874 / 7.047) [Raw engine output] === round 1 === Edax version 4.5.6 Nov 11 2026 19:16:34 for Apple copyright 1998 - 2025 Richard Delorme, Toshihiko Okuhara WARNING: missing best score in -XXXXXXX--XOOO----OXOOXX-OOXXOXX-OOOOOXX-X-XOOXX---O-X-X--OOOO-- X; # | depth|score| time | nodes (N) | N/s | principal variation ---+------+-----+--------------+-------------+----------+--------------------- 1| 20 -08 0:00.028 5301617 189343464 e7 C7 a4 B3 a6 A5 c6 WARNING: missing best score in -------------O-O-OOOOOOOOOOOOXOOOXXOOOXO-XXXOXOO--XXXOXO--OXXXXO X; 2| 20 -02 0:00.036 8070038 224167722 c2 D2 a3 A2 e1 D1 e2 WARNING: missing best score in --XXX-----XXXX-OOOXXOOOOOOOOOOXO-OOXXXXO-OOOXXXO---XOXX---X----- O; 3| 21 +00 0:00.029 5565320 191907586 C7 b8 D8 e8 H8 h7 G8 WARNING: missing best score in ---X-O----XXXO-XXXXXXXXXXOOXXOOXXOXOOOXXXXOOOO-XX--OOOO--------- O; 4| 21 +00 0:00.044 8791597 199809023 B7 e1 C1 a8 C7 b8 G6 WARNING: missing best score in --OOOO--O-OOOO--OXXXOOO-OXXOXO--OOXXOXX-OOXXXX--O-XXX-----XX-O-- X; 5| 22 -20 0:00.106 29361564 276995887 g2 G4 h4 H1 b7 H6 h5 WARNING: missing best score in --OOOO----OOOO---XOXXOOXOOXOOOOX-OOOOOXXXOOXXXXX--X-X----------- X; 6| 24 +04 0:00.115 26398246 229549965 b2 C8 h2 G2 a5 A7 h1 WARNING: missing best score in O-OOOO--XOXXOX--XOOOXXX-XOOOXX--XOOXOX--XOXXX---X-XX------------ O; 7| 26 +64 0:00.010 360257 36025700 A8 ps B1 ps B8 c8 D8 WARNING: missing best score in O--OOOOX-OOOOOOXOOXXOOOXOOXOOOXXOOOOOOXX---OOOOX----O--X-------- X; 8| 20 +38 0:00.033 10354172 313762788 a2 B1 c1 PS b6 C7 a7 WARNING: missing best score in -OOOOO----OOOOX--OOOOOO-XXXXXOO--XXOOX--OOXOXX----OXXO---OOO--O- X; 9| 22 +00 0:00.069 20871282 302482348 h4 A3 a2 G6 g5 H5 f8 WARNING: missing best score in --OOO-------XX-OOOOOOXOO-OOOOXOOX-OOOXXO---OOXOO---OOOXO--OOOO-- X; 10| 22 +06 0:00.098 26679970 272244592 g2 H1 c2 G1 f1 D2 b2 WARNING: missing best score in --XXXXX---XXXX---OOOXX---OOXXXX--OOXXXO-OOOOXOO----XOX----XXXXX- O; 11| 23 -12 0:00.253 77288515 305488202 G3 h6 C7 h4 H5 h3 G2 WARNING: missing best score in --O-X-O---O-XO-O-OOXXXOOOOOOXXXOOOOOXX--XXOOXO----XXXX-----XXX-- O; 12| 23 -14 0:00.111 21216205 191136982 D2 g5 B8 a3 B7 a8 A7 WARNING: missing best score in ---XXXX-X-XXXO--XXOXOO--XXXOXO--XXOXXO---OXXXOO-O-OOOO------OO-- X; 13| 24 +06 0:00.723 261006530 361004882 b2 C1 g5 H4 h6 G4 b1 WARNING: missing best score in ---XXX----OOOX----OOOXX--OOOOXXX--OOOOXX--OXOXXX--XXOO---XXXX-O- X; 14| 24 -08 0:00.184 63165747 343292103 b3 C1 b1 A3 b2 H3 a5 WARNING: missing best score in -OOOOO----OOOO---OOOOX--XXXXXX---OXOOX--OOOXOX----OOXX----XXXX-- O; 15| 25 +04 0:00.082 18510476 225737512 G2 b8 B7 a2 A5 b2 G3 WARNING: missing best score in -----X--X-XXX---XXXXOO--XOXOOXX-XOOXXX--XOOXX-----OOOX---XXXXXX- O; 16| 25 +28 0:00.529 145587362 275212405 F6 g5 G3 f2 H4 h5 H3 WARNING: missing best score in --OX-O----XXOO--OOOOOXX-OOOOOX--OOOXOXX-OOOOXX-----OOX----X-O--- X; 17| 26 +16 0:01.041 364779046 350412148 e1 H4 g6 H6 h5 G4 b2 WARNING: missing best score in ----X-----XXX----OOOXOOO-OOOXOOO-OXOXOXO-OOXXOOO--OOXO----O--O-- X; 18| 26 +10 0:02.443 974770543 399005544 d8 E8 g8 H8 f2 G7 b7 WARNING: missing best score in ----O-X------X-----XXXO-OXXXXXOO-XXOOXOOXXOXXXOO--OOOO-O----OO-- O; 19| 27 +06 0:01.044 417704990 400100565 E2 h2 G7 f1 H1 h3 D1 ---+------+-----+--------------+-------------+----------+--------------------- : 2485783477 nodes in 0:06.978 (356231510 nodes/s). 19 positions; 0 erroneous move; 0 erroneous score; mean absolute score error = 0.000; mean absolute move error = 0.000 === round 2 === Edax version 4.5.6 Nov 11 2026 19:16:34 for Apple copyright 1998 - 2025 Richard Delorme, Toshihiko Okuhara WARNING: missing best score in -XXXXXXX--XOOO----OXOOXX-OOXXOXX-OOOOOXX-X-XOOXX---O-X-X--OOOO-- X; # | depth|score| time | nodes (N) | N/s | principal variation ---+------+-----+--------------+-------------+----------+--------------------- 1| 20 -08 0:00.026 5031328 193512615 e7 C7 a4 B3 a6 A5 c6 WARNING: missing best score in -------------O-O-OOOOOOOOOOOOXOOOXXOOOXO-XXXOXOO--XXXOXO--OXXXXO X; 2| 20 -02 0:00.031 8195377 264367000 c2 D2 a3 A2 e1 D1 e2 WARNING: missing best score in --XXX-----XXXX-OOOXXOOOOOOOOOOXO-OOXXXXO-OOOXXXO---XOXX---X----- O; 3| 21 +00 0:00.028 5636442 201301500 C7 b8 D8 e8 H8 h7 G8 WARNING: missing best score in ---X-O----XXXO-XXXXXXXXXXOOXXOOXXOXOOOXXXXOOOO-XX--OOOO--------- O; 4| 21 +00 0:00.044 8922722 202789136 B7 e1 C1 a8 C7 b8 G6 WARNING: missing best score in --OOOO--O-OOOO--OXXXOOO-OXXOXO--OOXXOXX-OOXXXX--O-XXX-----XX-O-- X; 5| 22 -20 0:00.110 30858056 280527782 g2 G4 h4 H1 b7 H6 h5 WARNING: missing best score in --OOOO----OOOO---XOXXOOXOOXOOOOX-OOOOOXXXOOXXXXX--X-X----------- X; 6| 24 +04 0:00.109 26388010 242091835 b2 C8 h2 G2 a5 A7 h1 WARNING: missing best score in O-OOOO--XOXXOX--XOOOXXX-XOOOXX--XOOXOX--XOXXX---X-XX------------ O; 7| 26 +64 0:00.017 1984206 116718000 A8 ps B1 ps H3 g2 D8 WARNING: missing best score in O--OOOOX-OOOOOOXOOXXOOOXOOXOOOXXOOOOOOXX---OOOOX----O--X-------- X; 8| 20 +38 0:00.032 10343378 323230562 a2 B1 c1 PS b6 C7 a7 WARNING: missing best score in -OOOOO----OOOOX--OOOOOO-XXXXXOO--XXOOX--OOXOXX----OXXO---OOO--O- X; 9| 22 +00 0:00.070 21470602 306722886 h4 A3 a2 G6 g5 H5 f8 WARNING: missing best score in --OOO-------XX-OOOOOOXOO-OOOOXOOX-OOOXXO---OOXOO---OOOXO--OOOO-- X; 10| 22 +06 0:00.099 27308591 275844354 g2 H1 c2 G1 f1 D2 b2 WARNING: missing best score in --XXXXX---XXXX---OOOXX---OOXXXX--OOXXXO-OOOOXOO----XOX----XXXXX- O; 11| 23 -12 0:00.248 76336411 307808109 G3 h6 C7 h4 H5 h3 G2 WARNING: missing best score in --O-X-O---O-XO-O-OOXXXOOOOOOXXXOOOOOXX--XXOOXO----XXXX-----XXX-- O; 12| 23 -14 0:00.105 22051705 210016238 B8 g5 D2 a3 B7 a8 A7 WARNING: missing best score in ---XXXX-X-XXXO--XXOXOO--XXXOXO--XXOXXO---OXXXOO-O-OOOO------OO-- X; 13| 24 +06 0:00.678 257753810 380167861 b2 C1 g5 H4 h6 G4 b1 WARNING: missing best score in ---XXX----OOOX----OOOXX--OOOOXXX--OOOOXX--OXOXXX--XXOO---XXXX-O- X; 14| 24 -08 0:00.175 61978357 354162040 b3 C1 b1 A3 b2 H3 a5 WARNING: missing best score in -OOOOO----OOOO---OOOOX--XXXXXX---OXOOX--OOOXOX----OOXX----XXXX-- O; 15| 25 +04 0:00.089 19522986 219359393 G2 b8 B7 a2 A5 b2 G3 WARNING: missing best score in -----X--X-XXX---XXXXOO--XOXOOXX-XOOXXX--XOOXX-----OOOX---XXXXXX- O; 16| 25 +28 0:00.429 144056753 335796627 F6 g5 G3 f2 H4 h5 H3 WARNING: missing best score in --OX-O----XXOO--OOOOOXX-OOOOOX--OOOXOXX-OOOOXX-----OOX----X-O--- X; 17| 26 +16 0:01.037 374868542 361493290 e1 H4 g6 H6 h5 G4 b2 WARNING: missing best score in ----X-----XXX----OOOXOOO-OOOXOOO-OXOXOXO-OOXXOOO--OOXO----O--O-- X; 18| 26 +10 0:02.525 990245727 392176526 d8 E8 g8 H8 f2 G7 b7 WARNING: missing best score in ----O-X------X-----XXXO-OXXXXXOO-XXOOXOOXXOXXXOO--OOOO-O----OO-- O; 19| 27 +06 0:01.022 409140403 400333075 E2 h2 G7 f1 H1 h3 D1 ---+------+-----+--------------+-------------+----------+--------------------- : 2502093406 nodes in 0:06.874 (363993804 nodes/s). 19 positions; 0 erroneous move; 0 erroneous score; mean absolute score error = 0.000; mean absolute move error = 0.000 === round 3 === Edax version 4.5.6 Nov 11 2026 19:16:34 for Apple copyright 1998 - 2025 Richard Delorme, Toshihiko Okuhara WARNING: missing best score in -XXXXXXX--XOOO----OXOOXX-OOXXOXX-OOOOOXX-X-XOOXX---O-X-X--OOOO-- X; # | depth|score| time | nodes (N) | N/s | principal variation ---+------+-----+--------------+-------------+----------+--------------------- 1| 20 -08 0:00.029 5372483 185258034 e7 C7 a4 B3 a6 A5 c6 WARNING: missing best score in -------------O-O-OOOOOOOOOOOOXOOOXXOOOXO-XXXOXOO--XXXOXO--OXXXXO X; 2| 20 -02 0:00.031 8051324 259720129 c2 D2 a3 A2 e1 D1 e2 WARNING: missing best score in --XXX-----XXXX-OOOXXOOOOOOOOOOXO-OOXXXXO-OOOXXXO---XOXX---X----- O; 3| 21 +00 0:00.028 5546793 198099750 C7 b8 D8 e8 H8 h7 G8 WARNING: missing best score in ---X-O----XXXO-XXXXXXXXXXOOXXOOXXOXOOOXXXXOOOO-XX--OOOO--------- O; 4| 21 +00 0:00.041 8979552 219013463 B7 e1 C1 a8 C7 b8 G6 WARNING: missing best score in --OOOO--O-OOOO--OXXXOOO-OXXOXO--OOXXOXX-OOXXXX--O-XXX-----XX-O-- X; 5| 22 -20 0:00.095 27856461 293225905 g2 G4 h4 H1 b7 H6 h5 WARNING: missing best score in --OOOO----OOOO---XOXXOOXOOXOOOOX-OOOOOXXXOOXXXXX--X-X----------- X; 6| 24 +04 0:00.108 25851901 239369454 b2 C8 h2 G2 a5 A7 h1 WARNING: missing best score in O-OOOO--XOXXOX--XOOOXXX-XOOOXX--XOOXOX--XOXXX---X-XX------------ O; 7| 26 +64 0:00.016 1719415 107463438 A8 ps B1 ps H3 g2 D8 WARNING: missing best score in O--OOOOX-OOOOOOXOOXXOOOXOOXOOOXXOOOOOOXX---OOOOX----O--X-------- X; 8| 20 +38 0:00.031 10279788 331606065 a2 B1 c1 PS b6 C7 a7 WARNING: missing best score in -OOOOO----OOOOX--OOOOOO-XXXXXOO--XXOOX--OOXOXX----OXXO---OOO--O- X; 9| 22 +00 0:00.068 21153335 311078456 h4 A3 a2 G6 g5 H5 f8 WARNING: missing best score in --OOO-------XX-OOOOOOXOO-OOOOXOOX-OOOXXO---OOXOO---OOOXO--OOOO-- X; 10| 22 +06 0:00.102 27207844 266743569 g2 H1 c2 G1 f1 D2 b2 WARNING: missing best score in --XXXXX---XXXX---OOOXX---OOXXXX--OOXXXO-OOOOXOO----XOX----XXXXX- O; 11| 23 -12 0:00.259 82071010 316876486 G3 h6 C7 h4 H5 h3 G2 WARNING: missing best score in --O-X-O---O-XO-O-OOXXXOOOOOOXXXOOOOOXX--XXOOXO----XXXX-----XXX-- O; 12| 23 -14 0:00.114 24880092 218246421 B8 g5 D2 a3 B7 a8 A7 WARNING: missing best score in ---XXXX-X-XXXO--XXOXOO--XXXOXO--XXOXXO---OXXXOO-O-OOOO------OO-- X; 13| 24 +06 0:00.679 256172962 377279767 b2 C1 g5 H4 h6 G4 b1 WARNING: missing best score in ---XXX----OOOX----OOOXX--OOOOXXX--OOOOXX--OXOXXX--XXOO---XXXX-O- X; 14| 24 -08 0:00.184 62476427 339545799 b3 C1 b1 A3 b2 H3 a5 WARNING: missing best score in -OOOOO----OOOO---OOOOX--XXXXXX---OXOOX--OOOXOX----OOXX----XXXX-- O; 15| 25 +04 0:00.085 19142283 225203329 G2 b8 B7 a2 A5 b2 G3 WARNING: missing best score in -----X--X-XXX---XXXXOO--XOXOOXX-XOOXXX--XOOXX-----OOOX---XXXXXX- O; 16| 25 +28 0:00.450 143268146 318373658 F6 g5 G3 f2 H4 h5 H3 WARNING: missing best score in --OX-O----XXOO--OOOOOXX-OOOOOX--OOOXOXX-OOOOXX-----OOX----X-O--- X; 17| 26 +16 0:01.062 368842508 347309330 e1 H4 g6 H6 h5 G4 b2 WARNING: missing best score in ----X-----XXX----OOOXOOO-OOOXOOO-OXOXOXO-OOXXOOO--OOXO----O--O-- X; 18| 26 +10 0:02.594 999422525 385282392 d8 E8 g8 H8 f2 G7 b7 WARNING: missing best score in ----O-X------X-----XXXO-OXXXXXOO-XXOOXOOXXOXXXOO--OOOO-O----OO-- O; 19| 27 +06 0:01.071 414841845 387340658 E2 h2 G7 f1 H1 h3 D1 ---+------+-----+--------------+-------------+----------+--------------------- : 2513136694 nodes in 0:07.047 (356625045 nodes/s). 19 positions; 0 erroneous move; 0 erroneous score; mean absolute score error = 0.000; mean absolute move error = 0.000