Syzygy endgame tablebases

Black is losing with DTZ 114

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

KRRBNvKR.pgn lichess.org

Histogram: KRRBN winning vs. KR (log scale)

Longest KRRBNvKR phases

KRRBNvKR statistics (unique positions)

White wins:
463,311,813,885 (99.4%)
Frustrated white wins:
118,864 (0.0%)
Draws:
2,356,871,185 (0.5%)
Black wins:
393,555,804 (0.1%)
KRRBNvKR.json (?)