Syzygy endgame tablebases

Black is losing with DTZ 138

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


Histogram: KRRB winning vs. KRP (log scale)

Longest KRRBvKRP phases

KRRBvKRP statistics (unique positions)

White wins:
1,154,234,481,162 (81.0%)
Frustrated white wins:
3,026,498 (0.0%)
249,058,343,718 (17.5%)
Frustrated black wins:
3,322,640 (0.0%)
Black wins:
22,026,035,962 (1.5%)
KRRBvKRP.json (?)