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Starting game number→ first file: 00001.rgn
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Black strength
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, the engine’s own move selection (candidate generation + perturbed static eval) 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: If you need a throughput estimate for your machine, time a small batch (e.g. 20–50 games) before committing to a long run. For texel tuning, 5 000–10 000 games provide sufficient signal. For opening theory, quantity matters most: 50 000+ games at any strength setting is a reasonable target, since strength no longer trades off against speed.