Syzygy endgame tablebases

Black is losing with DTZ 257

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

KBBNvKBN.pgn lichess.org

Histogram: KBBN winning vs. KBN (log scale)

Longest KBBNvKBN phases

KBBNvKBN statistics (unique positions)

White wins:
167,723,087,396 (31.8%)
Frustrated white wins:
38,448,763,318 (7.3%)
Draws:
321,018,125,590 (60.9%)
Frustrated black wins:
92,134 (0.0%)
Black wins:
107,435,338 (0.0%)
KBBNvKBN.json (?)