Syzygy endgame tablebases

Black is losing with DTZ 429

Ke6 Loss with DTZ 428 Rf4 Loss with DTZ 154 Kg6 Loss with DTZ 126

Kg5 Loss with DTZ 93 Ke5 Loss with DTZ 13 Ke4 Loss with DTZ 1 Kg4 Loss with DTZ 1

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

KRBNvKRN.pgn lichess.org

Histogram: KRBN winning vs. KRN (log scale)

Longest KRBNvKRN phases

KRBNvKRN statistics (unique positions)

White wins:
237,224,993,292 (48.5%)

Frustrated white wins:
56,964,246,083 (11.6%)

Draws:
183,550,192,470 (37.5%)

Frustrated black wins:
1,955,054,802 (0.4%)

Black wins:
9,479,409,777 (1.9%)

KRBNvKRN.json (?)