FlipMind benchmark result (2026-11-13) Platform: ARM64 build, Apple M4 (10 cores), macOS Engine: Edax 4.5.6 (official source, arm64) Problems: Edax 16 (the 16 endgame positions of the Edax bench command, 20-23 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: 15/16 (Edax12: a different move with the same best score) Average: 3.316 s (rounds: 3.557 / 3.151 / 3.241) [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 --O---O----OOO--OOOOOOX--OOOOXO-OOOOXXXOOXXXXOXXO---XXXX---XXXXO X; # | depth|score| time | nodes (N) | N/s | principal variation ---+------+-----+--------------+-------------+----------+--------------------- 1| 20 +20 0:00.025 4212888 168515520 a4 C8 a8 D7 c7 G2 a2 WARNING: missing best score in O-XXXXX--OXXX--XX-OOX-X--XOOOXXOOOXOOOOO--OX-XO---OXX-O--OXX--OX X; 2| 20 -02 0:00.040 9957556 248938900 h7 E6 f8 F7 h6 H3 e8 WARNING: missing best score in X-O------XO-OOO-OOXOXOO-OOOXOXO-OOXOXXOXO-XXOXO--OOXOOO-----XOO- X; 3| 20 +38 0:00.870 413422487 475198261 d8 B6 c8 D2 a8 A7 b8 WARNING: missing best score in ---XXXXX-O-X-XXX--OXOXOX--XXXXOX---XOXOXXXXOXXXX--OOOOOX---XXX-- X; 4| 20 +24 0:00.032 7047520 220235000 e2 B5 c8 B4 b8 C5 a5 WARNING: missing best score in ---O-----XOOO-OOOXXO-OOOOXXXOOOOOXXOXO-O-XOOOX-O-XXXXOX---X-X-O- X; 5| 20 +00 0:00.040 11206084 280152100 e3 A6 h1 G6 b1 A1 a2 WARNING: missing best score in --XOOOO--X-OOO-XOOOOOOOOXO-OXXOOOXOXXOX---XXXXX----XO-XO---X-O-- O; 6| 21 +10 0:00.059 14037625 237925847 H1 f7 E8 c4 H8 g8 C8 WARNING: missing best score in -XXXX-O--OOOXO--OOOOXXO-OOOOX-X-OOXXOX--O-XXXOOOOXX---O-OOO----- O; 7| 21 +12 0:00.058 14419977 248620293 G2 f7 B6 f4 D8 h8 D7 WARNING: missing best score in OXXO-OOOOOOOOXO-XOXOXX--OXOXX-X--OXXXX--OOOOXX---XOX-X---X-X---- O; 8| 21 +20 0:00.056 13734831 245264839 A5 c8 E7 e1 F4 g5 G3 WARNING: missing best score in -X-OX-O--OOOXO---OOXXX---XXOXXXX--XXXXX--OXXOXXO-X-OX--XXXXXXX-- O; 9| 21 -22 0:00.110 27828764 252988764 C7 h5 G2 g3 H3 h1 H2 WARNING: missing best score in X--X--O-OXOX-OO---OXXO---XXOOXO-XXXXXXO--XXXOOOX-XOOOOOO---OOX-- O; 10| 21 -20 0:00.200 68706230 343531150 A3 a4 B3 c8 A8 h8 G8 WARNING: missing best score in -O--O---XXOXOXX--X-OOX--XXOOOOX--X-OO--X-XOOOOO--XXXXXXX-X-XO-OX X; 11| 22 -22 0:00.251 48223466 192125363 f8 C3 c5 A1 h6 H1 g5 WARNING: missing best score in -O-XXO----O-XOO---OOXXOXXXOXXOOO-OXXXXOX-OOOOOXXXO--O-O--O-----O X; 12| 22 +22 0:00.632 250953235 397077903 d2 B2 c1 H2 h1 G1 a8 WARNING: missing best score in O--X-OOOOOOOOXX-OXXXXXX-XXOOOOOOXXXXX-O--OOOOO----O-O-X-----O--- X; 13| 22 -16 0:00.764 231648169 303204410 c1 B1 e1 A6 f5 H8 h5 WARNING: missing best score in --XXXX--XXX-XO---XOXOX--OOXOX----OOXOOO-OO-XXOXX-O-XOO----OOOOOO X; 14| 22 -24 0:00.146 39572554 271044890 c6 A3 f4 G4 h4 H5 a8 WARNING: missing best score in -OX-XO--OOXXOO---OXOXOXOXOOXOX-X-OXOOXX---OOXXX---OOX-X--O--X--X X; 15| 22 +22 0:00.145 46579424 321237407 a1 G4 a3 B6 f7 H5 d8 WARNING: missing best score in ----XXXOO-X-XXX--OXXXXX-OOXXXXXX-OXXXXX--O-OOOOO---X-X---OOO-X-- O; 16| 23 +00 0:00.129 38629880 299456434 B2 h5 C1 a3 D1 a6 H2 ---+------+-----+--------------+-------------+----------+--------------------- : 1240180690 nodes in 0:03.557 (348659176 nodes/s). 16 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 --O---O----OOO--OOOOOOX--OOOOXO-OOOOXXXOOXXXXOXXO---XXXX---XXXXO X; # | depth|score| time | nodes (N) | N/s | principal variation ---+------+-----+--------------+-------------+----------+--------------------- 1| 20 +20 0:00.027 3969126 147004667 a4 C8 a8 D7 c7 G2 a2 WARNING: missing best score in O-XXXXX--OXXX--XX-OOX-X--XOOOXXOOOXOOOOO--OX-XO---OXX-O--OXX--OX X; 2| 20 -02 0:00.044 10825812 246041182 h7 E6 f8 F7 h6 H3 e8 WARNING: missing best score in X-O------XO-OOO-OOXOXOO-OOOXOXO-OOXOXXOXO-XXOXO--OOXOOO-----XOO- X; 3| 20 +38 0:00.818 379283812 463672142 d8 B6 c8 D2 a8 A7 b8 WARNING: missing best score in ---XXXXX-O-X-XXX--OXOXOX--XXXXOX---XOXOXXXXOXXXX--OOOOOX---XXX-- X; 4| 20 +24 0:00.033 7406815 224448939 e2 B5 c8 B4 b8 C5 a5 WARNING: missing best score in ---O-----XOOO-OOOXXO-OOOOXXXOOOOOXXOXO-O-XOOOX-O-XXXXOX---X-X-O- X; 5| 20 +00 0:00.039 11211386 287471436 e3 A6 h1 G6 b1 A1 a2 WARNING: missing best score in --XOOOO--X-OOO-XOOOOOOOOXO-OXXOOOXOXXOX---XXXXX----XO-XO---X-O-- O; 6| 21 +10 0:00.057 13725347 240795561 H1 f7 E8 c4 H8 g8 C8 WARNING: missing best score in -XXXX-O--OOOXO--OOOOXXO-OOOOX-X-OOXXOX--O-XXXOOOOXX---O-OOO----- O; 7| 21 +12 0:00.062 15145220 244277742 G2 f7 B6 f4 D8 h8 D7 WARNING: missing best score in OXXO-OOOOOOOOXO-XOXOXX--OXOXX-X--OXXXX--OOOOXX---XOX-X---X-X---- O; 8| 21 +20 0:00.055 13443188 244421600 A5 c8 E7 e1 F4 g5 G3 WARNING: missing best score in -X-OX-O--OOOXO---OOXXX---XXOXXXX--XXXXX--OXXOXXO-X-OX--XXXXXXX-- O; 9| 21 -22 0:00.110 28466890 258789909 C7 h5 G2 g3 H3 h1 H2 WARNING: missing best score in X--X--O-OXOX-OO---OXXO---XXOOXO-XXXXXXO--XXXOOOX-XOOOOOO---OOX-- O; 10| 21 -20 0:00.210 71238282 339229914 A3 a4 B3 c8 A8 h8 A7 WARNING: missing best score in -O--O---XXOXOXX--X-OOX--XXOOOOX--X-OO--X-XOOOOO--XXXXXXX-X-XO-OX X; 11| 22 -22 0:00.143 46963557 328416483 f8 C3 c5 A1 h6 H1 g5 WARNING: missing best score in -O-XXO----O-XOO---OOXXOXXXOXXOOO-OXXXXOX-OOOOOXXXO--O-O--O-----O X; 12| 22 +22 0:00.636 256851017 403853800 d2 B2 c1 H2 h1 G1 a8 WARNING: missing best score in O--X-OOOOOOOOXX-OXXXXXX-XXOOOOOOXXXXX-O--OOOOO----O-O-X-----O--- X; 13| 22 -16 0:00.504 225425427 447272673 c1 B1 e1 A6 f5 H8 h5 WARNING: missing best score in --XXXX--XXX-XO---XOXOX--OOXOX----OOXOOO-OO-XXOXX-O-XOO----OOOOOO X; 14| 22 -24 0:00.158 41373570 261858038 c6 A3 f4 G4 h4 H5 a8 WARNING: missing best score in -OX-XO--OOXXOO---OXOXOXOXOOXOX-X-OXOOXX---OOXXX---OOX-X--O--X--X X; 15| 22 +22 0:00.134 44268619 330362828 a1 G4 a3 B6 f7 H5 d8 WARNING: missing best score in ----XXXOO-X-XXX--OXXXXX-OOXXXXXX-OXXXXX--O-OOOOO---X-X---OOO-X-- O; 16| 23 +00 0:00.121 39015911 322445545 B2 h5 C1 a3 D1 a6 H2 ---+------+-----+--------------+-------------+----------+--------------------- : 1208613979 nodes in 0:03.151 (383565211 nodes/s). 16 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 --O---O----OOO--OOOOOOX--OOOOXO-OOOOXXXOOXXXXOXXO---XXXX---XXXXO X; # | depth|score| time | nodes (N) | N/s | principal variation ---+------+-----+--------------+-------------+----------+--------------------- 1| 20 +20 0:00.030 4101255 136708500 a4 C8 a8 D7 c7 G2 a2 WARNING: missing best score in O-XXXXX--OXXX--XX-OOX-X--XOOOXXOOOXOOOOO--OX-XO---OXX-O--OXX--OX X; 2| 20 -02 0:00.141 10092238 71576156 h7 E6 f8 F7 h6 H3 e8 WARNING: missing best score in X-O------XO-OOO-OOXOXOO-OOOXOXO-OOXOXXOXO-XXOXO--OOXOOO-----XOO- X; 3| 20 +38 0:00.837 363412488 434184573 d8 B6 c8 D2 a8 A7 b8 WARNING: missing best score in ---XXXXX-O-X-XXX--OXOXOX--XXXXOX---XOXOXXXXOXXXX--OOOOOX---XXX-- X; 4| 20 +24 0:00.033 7250378 219708424 e2 B5 c8 B4 b8 C5 a5 WARNING: missing best score in ---O-----XOOO-OOOXXO-OOOOXXXOOOOOXXOXO-O-XOOOX-O-XXXXOX---X-X-O- X; 5| 20 +00 0:00.041 11463248 279591415 e3 A6 h1 G6 b1 A1 a2 WARNING: missing best score in --XOOOO--X-OOO-XOOOOOOOOXO-OXXOOOXOXXOX---XXXXX----XO-XO---X-O-- O; 6| 21 +10 0:00.055 13342384 242588800 H1 f7 E8 c4 H8 g8 C8 WARNING: missing best score in -XXXX-O--OOOXO--OOOOXXO-OOOOX-X-OOXXOX--O-XXXOOOOXX---O-OOO----- O; 7| 21 +12 0:00.068 18296700 269069118 G2 f4 B6 f7 D8 h8 D7 WARNING: missing best score in OXXO-OOOOOOOOXO-XOXOXX--OXOXX-X--OXXXX--OOOOXX---XOX-X---X-X---- O; 8| 21 +20 0:00.054 13782930 255239444 A5 c8 E7 e1 F4 g5 G3 WARNING: missing best score in -X-OX-O--OOOXO---OOXXX---XXOXXXX--XXXXX--OXXOXXO-X-OX--XXXXXXX-- O; 9| 21 -22 0:00.103 26845890 260639709 C7 h5 G2 g3 H3 h1 H2 WARNING: missing best score in X--X--O-OXOX-OO---OXXO---XXOOXO-XXXXXXO--XXXOOOX-XOOOOOO---OOX-- O; 10| 21 -20 0:00.243 87997196 362128379 A3 a4 B3 c8 A8 h8 G8 WARNING: missing best score in -O--O---XXOXOXX--X-OOX--XXOOOOX--X-OO--X-XOOOOO--XXXXXXX-X-XO-OX X; 11| 22 -22 0:00.144 48904564 339615028 f8 C3 c5 A1 h6 H1 g5 WARNING: missing best score in -O-XXO----O-XOO---OOXXOXXXOXXOOO-OXXXXOX-OOOOOXXXO--O-O--O-----O X; 12| 22 +22 0:00.623 257011272 412538157 d2 B2 c1 H2 h1 G1 a8 WARNING: missing best score in O--X-OOOOOOOOXX-OXXXXXX-XXOOOOOOXXXXX-O--OOOOO----O-O-X-----O--- X; 13| 22 -16 0:00.482 231272683 479818844 c1 B1 e1 A6 f5 H8 h5 WARNING: missing best score in --XXXX--XXX-XO---XOXOX--OOXOX----OOXOOO-OO-XXOXX-O-XOO----OOOOOO X; 14| 22 -24 0:00.141 38579501 273613482 c6 A3 f4 G4 h4 H5 a8 WARNING: missing best score in -OX-XO--OOXXOO---OXOXOXOXOOXOX-X-OXOOXX---OOXXX---OOX-X--O--X--X X; 15| 22 +22 0:00.127 39947778 314549433 a1 G4 a3 B6 f7 H5 d8 WARNING: missing best score in ----XXXOO-X-XXX--OXXXXX-OOXXXXXX-OXXXXX--O-OOOOO---X-X---OOO-X-- O; 16| 23 +00 0:00.119 37367699 314014277 B2 h5 C1 a3 D1 a6 H2 ---+------+-----+--------------+-------------+----------+--------------------- : 1209668204 nodes in 0:03.241 (373239187 nodes/s). 16 positions; 0 erroneous move; 0 erroneous score; mean absolute score error = 0.000; mean absolute move error = 0.000