diff --git a/src/search.cpp b/src/search.cpp index af7a5c13..89636f23 100644 --- a/src/search.cpp +++ b/src/search.cpp @@ -153,7 +153,8 @@ void Search::init() { for (int d = 1; d < 64; ++d) for (int mc = 1; mc < 64; ++mc) { - double r = log(d) * log(mc) / 1.95; + double slope = d > 2 ? 0.88 * d + 0.36 : d; + double r = log(slope) * log(mc) / 1.95; Reductions[NonPV][imp][d][mc] = int(std::round(r)); Reductions[PV][imp][d][mc] = std::max(Reductions[NonPV][imp][d][mc] - 1, 0);