Syzygy endgame tablebases

Black is losing with DTZ 118

Rb1+ Loss with DTZ 117

Ka2 Loss with DTZ 7 Rb3 Loss with DTZ 5 Ra2 Loss with DTZ 3 Re2 Loss with DTZ 3 Rb4 Loss with DTZ 1 Rb5 Loss with DTZ 1 Rb6 Loss with DTZ 1 Rb7 Loss with DTZ 1 Rb8 Loss with DTZ 1 Rc2+ Loss with DTZ 1 Rd2 Loss with DTZ 1 Rf2 Loss with DTZ 1 Rg2 Loss with DTZ 1 Rh2 Loss with DTZ 1 c3 Zeroing

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

KQBvKRP.pgn lichess.org

Histogram: KQB winning vs. KRP (log scale)

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Longest KQBvKRP phases

KQBvKRP statistics (unique positions)

White wins:
19,667,644,569 (79.2%)

Frustrated white wins:
413,953 (0.0%)

Draws:
2,252,349,565 (9.1%)

Frustrated black wins:
9,831 (0.0%)

Black wins:
2,907,686,432 (11.7%)

KQBvKRP.json (?)

KQBvKRP dependencies

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

KQRvKQB · KRPvKB · KQBvKRR · KQBvKP · KQBvKRB · KRPvKQ · KQBvKRN · KQBvKR

KQBvKRP.txt KQBvKRP.dot