In TCEC, A0lite inexplicably dropped a queen

[dkappe]

Branch batching-prune

https://tcec-chess.com/#div=ql&game=121&season=19

69... Qd2+ drops a queen and spoils the draw.

message.txt

[dkappe]

2Q2bk1/5p2/4p2B/4P2P/8/1P1q4/K7/8 b - - 10 69

[dkappe]

Unable to reproduce without context:

info string d3d2 12 ����(P: 0.88%) �����(Q: -0.4295)
info string d3a6 15 ����(P: 1.18%) �����(Q: -0.55548)
info string d3e2 656 (P: 65.41%) ����(Q: -0.00541)
info string collisions 1493 cache hits 584 nps avg 713.53
info depth 1 seldepth 1 score cp -1 nodes 800 nps 714 pv d3e2
bestmove d3e2

[dkappe]

Even at 20k nodes, no dice.

info string d3d2 12 ����(P: 0.88%) �����(Q: -0.4295)
info string d3a6 15 ����(P: 1.18%) �����(Q: -0.55548)
info string g8h7 43 ����(P: 7.01%) �����(Q: -0.60166)
info string d3e2 19831 (P: 65.41%) ����(Q: -0.09638)
info string collisions 1555 cache hits 18244 nps avg 772.71
info depth 1 seldepth 1 score cp -28 nodes 20000 nps 773 pv d3e2
bestmove d3e2