Syzygy endgame tablebases

Black is winning with DTZ 131

This is a cursed win. Mate can be forced, but a draw can be achieved under the fifty-move rule.


Histogram: KBBN losing vs. KQR (log scale)

Longest KBBNvKQR phases

KBBNvKQR statistics (unique positions)

White wins:
20,099,911,648 (4.6%)
Frustrated white wins:
9,664,120 (0.0%)
79,051,217,892 (18.1%)
Frustrated black wins:
1,284,254,356 (0.3%)
Black wins:
335,461,909,596 (77.0%)
KBBNvKQR.json (?)