Quiescence tactical filter only flagged capture-promotions, so a quiet
queening on an empty back-rank square was treated as non-tactical and
skipped at the search horizon. A bot could therefore miss a winning
promotion sitting exactly at the horizon and play another move. All bots
(Classical/NNUE/Hybrid) share AlphaBetaSearch and were affected.
Treat every promotion as tactical so quiescence always expands it.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Pre-evaluated NNUE scores from NNUEBot.batchEvaluateRoot are now passed
as root hints into AlphaBetaSearch, improving move ordering at ply 0 before
the TT is populated. Hints are threaded immutably through SearchParams to
satisfy the no-var constraint.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---------
Co-authored-by: Janis Eccarius <eccariusjanis@gmail.com>
Reviewed-on: #83
Janis Eccarius
Janis