Syzygy endgame tablebases

White is losing with DTZ 107

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


Histogram: KQRR losing vs. KNP (log scale)

Longest KQRRvKNP phases

KQRRvKNP statistics (unique positions)

White wins:
1,383,123,193,596 (99.7%)
Frustrated white wins:
27,550 (0.0%)
3,651,919,172 (0.3%)
Frustrated black wins:
151,514,968 (0.0%)
Black wins:
716,819,846 (0.1%)
KQRRvKNP.json (?)