Syzygy endgame tablebases

Black is winning with DTZ 170

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


Histogram: KRRB losing vs. KQB (log scale)

Longest KRRBvKQB phases

KRRBvKQB statistics (unique positions)

White wins:
158,047,805,288 (38.9%)
Frustrated white wins:
8,297,521 (0.0%)
109,411,675,317 (26.9%)
Frustrated black wins:
59,998,455 (0.0%)
Black wins:
139,104,766,661 (34.2%)
KRRBvKQB.json (?)