Syzygy endgame tablebases

Black is losing with DTZ 306

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

KRBBvKRN.pgn lichess.org

Histogram: KRBB winning vs. KRN (log scale)

Longest KRBBvKRN phases

KRBBvKRN statistics (unique positions)

White wins:
245,673,637,699 (51.5%)
Frustrated white wins:
5,312,732,229 (1.1%)
Draws:
207,935,920,237 (43.6%)
Frustrated black wins:
12,282,175,339 (2.6%)
Black wins:
5,847,427,208 (1.2%)
KRBBvKRN.json (?)