Syzygy endgame tablebases

Black is losing with DTZ 401

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


Histogram: KRBNP winning vs. KQ (log scale)

Longest KRBNPvKQ phases

KRBNPvKQ statistics (unique positions)

White wins:
731,974,842,085 (52.6%)
Frustrated white wins:
392,462,577 (0.0%)
457,107,312,656 (32.9%)
Frustrated black wins:
1,515,408,023 (0.1%)
Black wins:
199,391,990,229 (14.3%)
KRBNPvKQ.json (?)