Syzygy endgame tablebases

Black is losing with DTZ 122

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


Histogram: KQQR winning vs. KQP (log scale)

Longest KQQRvKQP phases

KQQRvKQP statistics (unique positions)

White wins:
1,050,982,225,834 (97.6%)
Frustrated white wins:
3,333,488 (0.0%)
16,904,865,344 (1.6%)
Frustrated black wins:
498,026 (0.0%)
Black wins:
8,540,736,800 (0.8%)
KQQRvKQP.json (?)