Syzygy endgame tablebases

Black is losing with DTZ 104

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


Histogram: KQQR winning vs. KRP (log scale)

Longest KQQRvKRP phases

KQQRvKRP statistics (unique positions)

White wins:
1,200,718,346,122 (99.7%)
Frustrated white wins:
96,134 (0.0%)
1,753,513,256 (0.1%)
Frustrated black wins:
53,388 (0.0%)
Black wins:
1,615,221,736 (0.1%)
KQQRvKRP.json (?)