Syzygy endgame tablebases

White is winning with DTZ 211

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

KQRBvKQR.pgn lichess.org

Histogram: KQRB winning vs. KQR (log scale)

Longest KQRBvKQR phases

KQRBvKQR statistics (unique positions)

White wins:
191,292,788,888 (53.6%)
Frustrated white wins:
12,312,305 (0.0%)
Draws:
78,056,352,050 (21.9%)
Frustrated black wins:
539,417 (0.0%)
Black wins:
87,395,460,794 (24.5%)
KQRBvKQR.json (?)