raumschach.org · Raumfischer Version 1 · Priorities 1–4 active
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Starting game number→ first file: 00001.rgn
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Opening temperature T₀ (centipawns)200 cp
Controls randomness in the opening: with T = 200 cp, moves within 200 cp of the best are weighted by e^(Δscore/T). T = 0 means always choose the top-evaluated move; T = 500 gives near-uniform randomness. Temperature is applied only during the opening phase specified below.
Opening phase (plies)10 plies
Temperature sampling is applied for this many half-moves. After that, full-depth search takes over. 10 plies ≈ 5 full moves of opening variety.
Cooling half-life τ (plies)τ = 8
Temperature decays as T(n) = T₀ × e^(−n/τ). At n = τ, T ≈ 0.37 × T₀. A smaller τ cools faster; a larger one holds temperature longer.
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On realistic corpus sizes: At depth 2 (Weak), expect ~½–3 s/game → 100 000 games in 14–83 hours spread across sessions. At depth 3 (Average), ~5–30 s/game → a realistic campaign is 5 000–20 000 games. For texel tuning, 5 000–10 000 games at depth 3 provide sufficient signal; evaluation saturates well before 100K for this parameter space. For opening theory, quantity matters more than depth: depth 2 and 50 000+ games is ideal. Depth 4+ (Strong/RSM) is not recommended for bulk generation.
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