FlipMind benchmark result (2026-11-13) Platform: ARM64 build, Apple M4 (10 cores), macOS Engine: Edax 4.5.6 (official source, arm64) Problems: FFO 40-59 (FFO endgame tests #40-#59, 20 positions, 20-34 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: 20/20 Average: 66.698 s (rounds: 63.518 / 65.039 / 71.536) [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--OOOOX-OOOOOOXOOXXOOOXOOXOOOXXOOOOOOXX---OOOOX----O--X-------- X; # | depth|score| time | nodes (N) | N/s | principal variation ---+------+-----+--------------+-------------+----------+--------------------- 1| 20 +38 0:00.030 10359805 345326833 a2 B1 c1 PS b6 C7 a7 WARNING: missing best score in -OOOOO----OOOOX--OOOOOO-XXXXXOO--XXOOX--OOXOXX----OXXO---OOO--O- X; 2| 22 +00 0:00.065 21233163 326664046 h4 A3 a2 G6 g5 H5 f8 WARNING: missing best score in --OOO-------XX-OOOOOOXOO-OOOOXOOX-OOOXXO---OOXOO---OOOXO--OOOO-- X; 3| 22 +06 0:00.095 28236912 297230653 g2 H1 c2 G1 f1 D2 b2 WARNING: missing best score in --XXXXX---XXXX---OOOXX---OOXXXX--OOXXXO-OOOOXOO----XOX----XXXXX- O; 4| 23 -12 0:00.243 76619235 315305494 G3 h6 H5 c7 G7 h8 H7 WARNING: missing best score in --O-X-O---O-XO-O-OOXXXOOOOOOXXXOOOOOXX--XXOOXO----XXXX-----XXX-- O; 5| 23 -14 0:00.100 20952760 209527600 B8 g5 D2 a3 B7 a8 A7 WARNING: missing best score in ---XXXX-X-XXXO--XXOXOO--XXXOXO--XXOXXO---OXXXOO-O-OOOO------OO-- X; 6| 24 +06 0:00.650 254060202 390861849 b2 C1 g5 H4 h6 G4 b1 WARNING: missing best score in ---XXX----OOOX----OOOXX--OOOOXXX--OOOOXX--OXOXXX--XXOO---XXXX-O- X; 7| 24 -08 0:00.169 62298536 368630391 b3 C1 b1 A3 b2 H3 a5 WARNING: missing best score in -OOOOO----OOOO---OOOOX--XXXXXX---OXOOX--OOOXOX----OOXX----XXXX-- O; 8| 25 +04 0:00.071 17791305 250581761 G2 b8 B7 a2 A5 b2 G3 WARNING: missing best score in -----X--X-XXX---XXXXOO--XOXOOXX-XOOXXX--XOOXX-----OOOX---XXXXXX- O; 9| 25 +28 0:00.414 145229633 350796215 F6 g5 G3 f2 H4 h5 H3 WARNING: missing best score in --OX-O----XXOO--OOOOOXX-OOOOOX--OOOXOXX-OOOOXX-----OOX----X-O--- X; 10| 26 +16 0:00.988 366932656 371389328 e1 H4 g6 H6 h5 G4 b2 WARNING: missing best score in ----X-----XXX----OOOXOOO-OOOXOOO-OXOXOXO-OOXXOOO--OOXO----O--O-- X; 11| 26 +10 0:02.425 963750374 397422835 d8 E8 g8 H8 f2 G7 b7 WARNING: missing best score in ----O-X------X-----XXXO-OXXXXXOO-XXOOXOOXXOXXXOO--OOOO-O----OO-- O; 12| 27 +06 0:00.997 419317821 420579560 E2 h2 G7 f1 H1 h3 D1 WARNING: missing best score in ---X-------OX--X--XOOXXXXXXOXXXXXXXOOXXXXXXOOOXX--XO---X-------- O; 13| 27 +00 0:01.702 733603355 431024298 A3 f2 E1 f1 C2 b1 B3 WARNING: missing best score in ----OO-----OOO---XXXXOOO--XXOOXO-XXXXXOO--OOOXOO--X-OX-O-----X-- X; 14| 28 -02 0:06.143 2525574616 411130493 d8 B6 d7 A5 b4 A4 a3 WARNING: missing best score in --OOO---XXOO----XXXXOOOOXXXXOX--XXXOXX--XXOOO------OOO-----O---- X; 15| 28 -02 0:09.551 3993547764 418128758 c7 G6 g5 F6 g4 C8 b7 WARNING: missing best score in --------X-X------XXXXOOOOOXOXX--OOOXXXX-OOXXXX--O-OOOX-----OO--- O; 16| 29 +00 0:25.119 11197434581 445775492 G6 h7 E2 f2 H4 g4 D2 WARNING: missing best score in --XXXXX---XXXX---OOOXX---OOXOX---OXXXXX-OOOOOXO----OXX---------- O; 17| 29 +02 0:03.051 1288428788 422297210 H5 h4 H3 d8 C8 c7 E8 WARNING: missing best score in -------------------XXOOO--XXXOOO--XXOXOO-OOOXXXO--OXOO-O-OOOOO-- X; 18| 30 -10 0:05.400 1520597229 281592079 a6 B5 b4 E2 f2 E1 g1 WARNING: missing best score in --XOOO----OOO----OOOXOO--OOOOXO--OXOXXX-OOXXXX----X-XX---------- X; 19| 30 +04 0:06.286 2038375228 324272228 g1 F2 h3 D8 c8 D7 e8 WARNING: missing best score in -----------------------O--OOOOO---OOOOOXOOOOXXXX--XXOOXX--XX-O-X X; 20| 34 +64 0:00.019 961899 50626263 g8 E8 h4 B7 h2 B8 a8 ---+------+-----+--------------+-------------+----------+--------------------- : 25685305862 nodes in 1:03.518 (404378379 nodes/s). 20 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--OOOOX-OOOOOOXOOXXOOOXOOXOOOXXOOOOOOXX---OOOOX----O--X-------- X; # | depth|score| time | nodes (N) | N/s | principal variation ---+------+-----+--------------+-------------+----------+--------------------- 1| 20 +38 0:00.033 10304296 312251394 a2 B1 c1 PS b6 C7 a7 WARNING: missing best score in -OOOOO----OOOOX--OOOOOO-XXXXXOO--XXOOX--OOXOXX----OXXO---OOO--O- X; 2| 22 +00 0:00.069 21088263 305627000 h4 A3 a2 G6 g5 H5 f8 WARNING: missing best score in --OOO-------XX-OOOOOOXOO-OOOOXOOX-OOOXXO---OOXOO---OOOXO--OOOO-- X; 3| 22 +06 0:00.102 27333067 267971245 g2 H1 c2 G1 f1 D2 b2 WARNING: missing best score in --XXXXX---XXXX---OOOXX---OOXXXX--OOXXXO-OOOOXOO----XOX----XXXXX- O; 4| 23 -12 0:00.262 74216120 283267634 G3 h6 H5 c7 G7 h8 H7 WARNING: missing best score in --O-X-O---O-XO-O-OOXXXOOOOOOXXXOOOOOXX--XXOOXO----XXXX-----XXX-- O; 5| 23 -14 0:00.112 22881278 204297125 B8 g5 D2 a3 B7 a8 A7 WARNING: missing best score in ---XXXX-X-XXXO--XXOXOO--XXXOXO--XXOXXO---OXXXOO-O-OOOO------OO-- X; 6| 24 +06 0:00.754 256511023 340200296 b2 C1 g5 H4 h6 G4 b1 WARNING: missing best score in ---XXX----OOOX----OOOXX--OOOOXXX--OOOOXX--OXOXXX--XXOO---XXXX-O- X; 7| 24 -08 0:00.197 61040239 309848929 b3 C1 b1 A3 b2 H3 a5 WARNING: missing best score in -OOOOO----OOOO---OOOOX--XXXXXX---OXOOX--OOOXOX----OOXX----XXXX-- O; 8| 25 +04 0:00.091 18779602 206369253 G2 b8 B7 a2 A5 b2 G3 WARNING: missing best score in -----X--X-XXX---XXXXOO--XOXOOXX-XOOXXX--XOOXX-----OOOX---XXXXXX- O; 9| 25 +28 0:00.496 148821028 300042395 F6 g5 G3 f2 H4 h5 H3 WARNING: missing best score in --OX-O----XXOO--OOOOOXX-OOOOOX--OOOXOXX-OOOOXX-----OOX----X-O--- X; 10| 26 +16 0:01.314 371741192 282908061 e1 H4 g6 H6 h5 G4 b2 WARNING: missing best score in ----X-----XXX----OOOXOOO-OOOXOOO-OXOXOXO-OOXXOOO--OOXO----O--O-- X; 11| 26 +10 0:02.704 970223587 358810498 d8 E8 g8 H8 f2 G7 b7 WARNING: missing best score in ----O-X------X-----XXXO-OXXXXXOO-XXOOXOOXXOXXXOO--OOOO-O----OO-- O; 12| 27 +06 0:01.058 413724503 391043954 E2 h2 G7 f1 H1 h3 D1 WARNING: missing best score in ---X-------OX--X--XOOXXXXXXOXXXXXXXOOXXXXXXOOOXX--XO---X-------- O; 13| 27 +00 0:01.895 648010119 341957846 A3 f2 E1 f1 C2 b1 B3 WARNING: missing best score in ----OO-----OOO---XXXXOOO--XXOOXO-XXXXXOO--OOOXOO--X-OX-O-----X-- X; 14| 28 -02 0:06.769 2883483738 425983711 d8 B6 a5 C2 d7 A3 b4 WARNING: missing best score in --OOO---XXOO----XXXXOOOOXXXXOX--XXXOXX--XXOOO------OOO-----O---- X; 15| 28 -02 0:09.557 4069673535 425831698 c7 G6 g5 F6 g4 C8 b7 WARNING: missing best score in --------X-X------XXXXOOOOOXOXX--OOOXXXX-OOXXXX--O-OOOX-----OO--- O; 16| 29 +00 0:26.779 11251237532 420151519 G6 h7 E2 f2 H4 g4 D2 WARNING: missing best score in --XXXXX---XXXX---OOOXX---OOXOX---OXXXXX-OOOOOXO----OXX---------- O; 17| 29 +02 0:03.057 1328617363 434614774 H5 h4 H3 d8 C8 c7 E8 WARNING: missing best score in -------------------XXOOO--XXXOOO--XXOXOO-OOOXXXO--OXOO-O-OOOOO-- X; 18| 30 -10 0:05.052 1487106051 294359868 a6 B5 b4 E2 f2 E1 g1 WARNING: missing best score in --XOOO----OOO----OOOXOO--OOOOXO--OXOXXX-OOXXXX----X-XX---------- X; 19| 30 +04 0:04.721 1891006047 400552012 g1 F2 h3 D8 c8 D7 e8 WARNING: missing best score in -----------------------O--OOOOO---OOOOOXOOOOXXXX--XXOOXX--XX-O-X X; 20| 34 +64 0:00.017 954931 56172412 g8 E8 h4 B7 h2 B8 a8 ---+------+-----+--------------+-------------+----------+--------------------- : 25956753514 nodes in 1:05.039 (399095212 nodes/s). 20 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--OOOOX-OOOOOOXOOXXOOOXOOXOOOXXOOOOOOXX---OOOOX----O--X-------- X; # | depth|score| time | nodes (N) | N/s | principal variation ---+------+-----+--------------+-------------+----------+--------------------- 1| 20 +38 0:00.045 10283454 228521200 a2 B1 c1 PS b6 C7 a7 WARNING: missing best score in -OOOOO----OOOOX--OOOOOO-XXXXXOO--XXOOX--OOXOXX----OXXO---OOO--O- X; 2| 22 +00 0:00.093 21301989 229053645 h4 A3 a2 G6 g5 H5 f8 WARNING: missing best score in --OOO-------XX-OOOOOOXOO-OOOOXOOX-OOOXXO---OOXOO---OOOXO--OOOO-- X; 3| 22 +06 0:00.155 27349419 176447865 g2 H1 c2 G1 f1 D2 b2 WARNING: missing best score in --XXXXX---XXXX---OOOXX---OOXXXX--OOXXXO-OOOOXOO----XOX----XXXXX- O; 4| 23 -12 0:00.303 74954937 247376030 G3 h6 H5 c7 G7 h8 H7 WARNING: missing best score in --O-X-O---O-XO-O-OOXXXOOOOOOXXXOOOOOXX--XXOOXO----XXXX-----XXX-- O; 5| 23 -14 0:00.120 20283051 169025425 D2 g5 B8 a3 B7 a8 A7 WARNING: missing best score in ---XXXX-X-XXXO--XXOXOO--XXXOXO--XXOXXO---OXXXOO-O-OOOO------OO-- X; 6| 24 +06 0:00.883 264254975 299269507 b2 C1 g5 H4 h6 G4 b1 WARNING: missing best score in ---XXX----OOOX----OOOXX--OOOOXXX--OOOOXX--OXOXXX--XXOO---XXXX-O- X; 7| 24 -08 0:00.233 62759671 269354811 b3 C1 b1 A3 b2 H3 a5 WARNING: missing best score in -OOOOO----OOOO---OOOOX--XXXXXX---OXOOX--OOOXOX----OOXX----XXXX-- O; 8| 25 +04 0:00.090 17721456 196905067 G2 b8 B7 a2 A5 b2 G3 WARNING: missing best score in -----X--X-XXX---XXXXOO--XOXOOXX-XOOXXX--XOOXX-----OOOX---XXXXXX- O; 9| 25 +28 0:00.552 145120654 262899736 F6 g5 G3 f2 H4 h5 H3 WARNING: missing best score in --OX-O----XXOO--OOOOOXX-OOOOOX--OOOXOXX-OOOOXX-----OOX----X-O--- X; 10| 26 +16 0:01.439 383196221 266293413 e1 H4 g6 H6 h5 G4 b2 WARNING: missing best score in ----X-----XXX----OOOXOOO-OOOXOOO-OXOXOXO-OOXXOOO--OOXO----O--O-- X; 11| 26 +10 0:02.991 975531067 326155489 d8 E8 g8 H8 f2 G7 b7 WARNING: missing best score in ----O-X------X-----XXXO-OXXXXXOO-XXOOXOOXXOXXXOO--OOOO-O----OO-- O; 12| 27 +06 0:01.056 291323133 275874179 E2 h2 G7 f1 H1 h3 D1 WARNING: missing best score in ---X-------OX--X--XOOXXXXXXOXXXXXXXOOXXXXXXOOOXX--XO---X-------- O; 13| 27 +00 0:02.970 687716811 231554482 A3 f2 E1 f1 C2 b1 B3 WARNING: missing best score in ----OO-----OOO---XXXXOOO--XXOOXO-XXXXXOO--OOOXOO--X-OX-O-----X-- X; 14| 28 -02 0:07.210 2918353748 404764736 d8 B6 a5 C2 d7 A3 b4 WARNING: missing best score in --OOO---XXOO----XXXXOOOOXXXXOX--XXXOXX--XXOOO------OOO-----O---- X; 15| 28 -02 0:09.325 4043331065 433601187 c7 G6 g5 F6 g4 C8 b7 WARNING: missing best score in --------X-X------XXXXOOOOOXOXX--OOOXXXX-OOXXXX--O-OOOX-----OO--- O; 16| 29 +00 0:27.355 11106856658 406026564 G6 h7 E2 f2 H4 g4 D2 WARNING: missing best score in --XXXXX---XXXX---OOOXX---OOXOX---OXXXXX-OOOOOXO----OXX---------- O; 17| 29 +02 0:04.618 1427235360 309059194 H5 h4 H3 d8 C8 c7 E8 WARNING: missing best score in -------------------XXOOO--XXXOOO--XXOXOO-OOOXXXO--OXOO-O-OOOOO-- X; 18| 30 -10 0:06.074 1493317349 245854025 a6 B5 b4 E2 f2 E1 g1 WARNING: missing best score in --XOOO----OOO----OOOXOO--OOOOXO--OXOXXX-OOXXXX----X-XX---------- X; 19| 30 +04 0:06.007 1895034782 315471081 g1 F2 h3 D8 c8 D7 e8 WARNING: missing best score in -----------------------O--OOOOO---OOOOOXOOOOXXXX--XXOOXX--XX-O-X X; 20| 34 +64 0:00.017 948193 55776059 g8 E8 h4 B7 h2 B8 a8 ---+------+-----+--------------+-------------+----------+--------------------- : 25866873993 nodes in 1:11.536 (361592401 nodes/s). 20 positions; 0 erroneous move; 0 erroneous score; mean absolute score error = 0.000; mean absolute move error = 0.000