Syzygy endgame tablebases

Black is losing with DTZ 101

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


Histogram: KQRR winning vs. KP (log scale)

Longest KQRRvKP phases

KQRRvKP statistics (unique positions)

White wins:
25,046,120,464 (99.7%)
Frustrated white wins:
424 (0.0%)
60,980,818 (0.2%)
Black wins:
3,538,654 (0.0%)
KQRRvKP.json (?)