Syzygy endgame tablebases

Black is losing with DTZ 46

Rc1+ Loss with DTZ 45 Rb2+ Loss with DTZ 21 Ra2 Loss with DTZ 1 Rc3 Loss with DTZ 1 Rc4 Loss with DTZ 1 Rc5 Loss with DTZ 1 Rc6 Loss with DTZ 1 Rc7 Loss with DTZ 1 Rc8 Loss with DTZ 1 Rxd2 DTM 3 Zeroing

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 (?)

KQRRvKR dependencies

To probe all KQRRvKR positions, these tables and their transitive dependencies are also required:

KRRvKR · KQRvKR · KQRRvK

KQRRvKR.txt KQRRvKR.dot