Syzygy endgame tablebases

Black is losing with DTZ 116

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

KRRBvKRB.pgn lichess.org

Histogram: KRRB winning vs. KRB (log scale)

Longest KRRBvKRB phases

KRRBvKRB statistics (unique positions)

White wins:
322,043,850,930 (72.1%)
Frustrated white wins:
465,487 (0.0%)
Draws:
122,713,590,339 (27.5%)
Frustrated black wins:
22,234 (0.0%)
Black wins:
2,047,279,980 (0.5%)
KRRBvKRB.json (?)