Syzygy endgame tablebases

Black is losing with DTZ 380

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


Histogram: KRBBN winning vs. KQ (log scale)

Longest KRBBNvKQ phases

KRBBNvKQ statistics (unique positions)

White wins:
274,292,994,419 (62.4%)
Frustrated white wins:
99,663,112 (0.0%)
138,469,313,381 (31.5%)
Frustrated black wins:
2,380,920,624 (0.5%)
Black wins:
23,985,948,792 (5.5%)
KRBBNvKQ.json (?)