Hmmm, On my computer (with all CPU already running, so not the best condition), it took only 4 second to reach depth 23, not 6...
Code: Select all
....
23 -8 399 16747642 d7d5 d2d4 g8f6 g1f3 e7e6 c2c4 f8e7 b1c3 e8g8 f1e2 b8c6 e1g1 f6e4 c1d2 a7a6 g1h1 g8h8 d1e1 f7f5 c4d5 e4d2 e1d2 e6d5
24 -8 506 21205553 d7d5 d2d4 g8f6 g1f3 e7e6 c2c4 f8e7 b1c3 e8g8 f1e2 b8c6 e1g1 f6e4 c1d2 a7a6 g1h1 g8h8 d1e1 f7f5 c4d5 e4d2 e1d2 e6d5
25 -9 649 27120003 d7d5 d2d4 g8f6 g1f3 e7e6 c2c4 f8e7 c4d5 e6d5 f1d3 e8g8 b1c3 b8a6 a2a3 c7c5 d3c2 c5c4 e1g1 d8b6 c3a4 b6e6 c1d2 f8d8
move d7d5
Code: Select all
dumb-2.3 -b 20
Code: Select all
bench: 123995154 nodes in 16.8529 s, 7357510 nps.
Note that I am fine if your computer is intentionally running at slower speed, as it affect all engines in a similar way.