Syzygy endgame tablebases

Black is winning with DTZ 2

KQRBBvKR.pgn lichess.org

Histogram: KQRBB losing vs. KR (log scale)

Longest KQRBBvKR phases

KQRBBvKR statistics (unique positions)

White wins:
426,138,383,400 (99.7%)
Frustrated white wins:
80,126 (0.0%)
Draws:
1,101,104,630 (0.3%)
Black wins:
185,351,830 (0.0%)
KQRBBvKR.json (?)