Syzygy endgame tablebases

Black is winning with DTZ 108

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

KRRNvKRB.pgn lichess.org

Histogram: KRRN losing vs. KRB (log scale)

Longest KRRNvKRB phases

KRRNvKRB statistics (unique positions)

White wins:
320,398,248,820 (70.3%)
Frustrated white wins:
8,732 (0.0%)
Draws:
133,100,082,121 (29.2%)
Frustrated black wins:
30,320 (0.0%)
Black wins:
2,435,651,603 (0.5%)
KRRNvKRB.json (?)