46 lines
1.0 KiB
Scala
46 lines
1.0 KiB
Scala
package gambit
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object SearchParams:
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val reverseFutilityDepth = 6
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val reverseFutilityMargin = 80
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val razorDepth = 3
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val razorMargin: Array[Int] = Array(0, 240, 300, 520)
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val futilityDepth = 6
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val futilityMargin = 90
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val lmpDepth = 6
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val lmpBase: Array[Array[Int]] =
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val out = Array.ofDim[Int](2, lmpDepth + 1)
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var d = 0
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while d <= lmpDepth do
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out(0)(d) = (3 + d * d) / 2
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out(1)(d) = 3 + d * d
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d += 1
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out
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val lmrMinIndex = 3
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val lmrMinDepth = 3
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val lmrTable: Array[Array[Int]] =
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val maxDepth = 64
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val maxMoves = 64
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val out = Array.ofDim[Int](maxDepth + 1, maxMoves + 1)
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var d = 1
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while d <= maxDepth do
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var m = 1
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while m <= maxMoves do
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val r = 0.75 + math.log(d) * math.log(m) / 2.25
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out(d)(m) = math.max(0, r.toInt)
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m += 1
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d += 1
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out
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def lmrReduction(depth: Int, moveIndex: Int): Int =
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val d = math.min(depth, 64)
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val m = math.min(moveIndex, 64)
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lmrTable(d)(m)
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val seeQuietMargin = -20
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val deltaMargin = 120
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