Syzygy endgame tablebases

Black is losing with DTZ 106

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


Histogram: KQRRB winning vs. KR (log scale)

Longest KQRRBvKR phases

KQRRBvKR statistics (unique positions)

White wins:
412,945,276,488 (99.9%)
Frustrated white wins:
17,698 (0.0%)
342,892,724 (0.1%)
Black wins:
163,760,354 (0.0%)
KQRRBvKR.json (?)