Syzygy endgame tablebases

Tablebase draw

KQBBvKQ.pgn lichess.org

Histogram: KQBB losing vs. KQ (log scale)

Longest KQBBvKQ phases

KQBBvKQ statistics

4,820,374,547 (67.8%)
1,448,774 (0.0%)
1,393,393,258 (19.6%)
76,776,090 (1.1%)
821,158,283 (11.5%)
KQBBvKQ.json (?)