Syzygy endgame tablebases

Black is losing with DTZ 46

KQRRvKR.pgn lichess.org

Histogram: KQRR winning vs. KR (log scale)

Longest KQRRvKR phases

KQRRvKR statistics (unique positions)

White wins:
7,313,533,220 (99.8%)
Draws:
6,807,080 (0.1%)
Black wins:
4,485,396 (0.1%)
KQRRvKR.json (?)