Syzygy endgame tablebases

White is losing with DTZ 216

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


Histogram: KRRB losing vs. KQR (log scale)

Longest KRRBvKQR phases

KRRBvKQR statistics (unique positions)

White wins:
104,615,894,607 (26.9%)
Frustrated white wins:
10,174,067 (0.0%)
108,845,070,765 (28.0%)
Frustrated black wins:
13,737,751 (0.0%)
Black wins:
175,240,920,524 (45.1%)
KRRBvKQR.json (?)