Syzygy endgame tablebases

White is winning with DTZ 3

Qa2 Draw Qd5+ Draw Qd7 Draw Qf3+ Draw Qf4+ Draw Qf5+ Draw Qfh5 Draw Bf8 Draw Bh6 Draw Qb8 Draw Qc8 Draw Qd8 Draw Qhf8 Draw Qhg8 Draw Qh1+ Draw Qh3 Draw Qhh5 Draw

Qb3 Loss with DTZ 24 Qf1 Loss with DTZ 10 Qfg8 Loss with DTZ 8

KQQBvKQR.pgn lichess.org

Histogram: KQQB winning vs. KQR (log scale)

Longest KQQBvKQR phases

KQQBvKQR statistics (unique positions)

White wins:
225,023,819,639 (68.6%)

Frustrated white wins:
628 (0.0%)

Draws:
76,432,051,889 (23.3%)

Frustrated black wins:
1,068,902 (0.0%)

Black wins:
26,789,935,166 (8.2%)

KQQBvKQR.json (?)

KQQBvKQR dependencies

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

KQRvKQB · KQQBvKR · KQQBvKQ · KQQvKQR

KQQBvKQR.txt KQQBvKQR.dot