Ravager 1

Ravager 1 — pure handcrafted-evaluation chess engine.

No NNUE. No opening book. No endgame tablebases.

Strength: ~2380 CCRL-blitz scale (95% CI 2320-2445), measured with
cutechess-cli vs CT800 1.46 (CCRL 2708) and Amundsen 0.80 (CCRL 2325),
148 games total, Bayesian Elo fit (Davidson draw model, anchor priors).

Highlights:

• Tapered handcrafted evaluation, texel-tuned (datagen + tuner included)
• PVS search: aspiration, singular + double-check extensions, LMR/LMP/
  futility/razoring, adaptive NMP + verification, ProbCut, improving-scaled
  margins, continuation history, predictive time management
• Incremental PSQT/material/phase accumulators, pawn-structure hash
• BMI2/PEXT sliding attacks (x86-64 with BMI2 required for this binary)
• Verified by exhaustive perft (startpos, Kiwipete, CPW 3-6)

Build from source: make
Full credits: see CREDITS.md