diff options
Diffstat (limited to 'src/split.c')
| -rwxr-xr-x | src/split.c | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/src/split.c b/src/split.c index bbaa518..2672c0c 100755 --- a/src/split.c +++ b/src/split.c @@ -1122,23 +1122,26 @@ Return value: } // - // Decide whether to history prune + // Decide how much (if any) to reduce this move's depth. // - if (TRUE == WeShouldDoHistoryPruning(iRoughEval, - iAlpha, - iBeta, - ctx, - uDepth, - (g_SplitInfo[u].uAlreadyDone + - uMoveNum + 1), - mv, - (g_SplitInfo[u].uAlreadyDone + - uMoveNum + 1), - iExtend)) { - ASSERT(iExtend == 0); - iExtend = -ONE_PLY; - ctx->sPlyInfo[ctx->uPly].iExtensionAmount = -ONE_PLY; + INT iLMR = GetLMRReduction(iRoughEval, + iAlpha, + iBeta, + ctx, + uDepth, + (g_SplitInfo[u].uAlreadyDone + + uMoveNum + 1), + mv, + (g_SplitInfo[u].uAlreadyDone + + uMoveNum + 1), + iExtend); + if (iLMR < 0) + { + ASSERT(iExtend == 0); + iExtend = iLMR; + ctx->sPlyInfo[ctx->uPly].iExtensionAmount = iLMR; + } } // @@ -1159,7 +1162,7 @@ Return value: // if ((iExtend < 0) && (iScore >= iBeta)) { - uDepth += ONE_PLY; + uDepth -= iExtend; // undo the full reduction, whatever its magnitude ctx->sPlyInfo[ctx->uPly].iExtensionAmount = 0; iScore = -Search(ctx, -iBeta, -iAlpha, uDepth); } |