Merge pull request #1538 from IIvec/master

IIvec · web-flow · commit 1efd871d707c · 2022-02-01T21:36:03.000+01:00
Do stats updates after LMR for captures
diff --git a/src/search.cpp b/src/search.cpp
@@ -1202,11 +1202,14 @@ namespace {
           value = -search<NonPV>(pos, ss+1, -(alpha+1), -alpha, newDepth + doDeeperSearch, !cutNode);
 
           // If the move passed LMR update its stats
-          if (didLMR && !captureOrPromotion)
+          if (didLMR)
           {
               int bonus = value > alpha ?  stat_bonus(newDepth)
                                         : -stat_bonus(newDepth);
 
+              if (captureOrPromotion)
+                  bonus /= 4;
+
               update_continuation_histories(ss, movedPiece, to_sq(move), bonus);
           }
       }

Original file line number	Diff line number	Diff line change
`@@ -1202,11 +1202,14 @@ namespace {`
`1202`	`1202`	`value = -search<NonPV>(pos, ss+1, -(alpha+1), -alpha, newDepth + doDeeperSearch, !cutNode);`
`1203`	`1203`
`1204`	`1204`	`// If the move passed LMR update its stats`
`1205`		`- if (didLMR && !captureOrPromotion)`
	`1205`	`+ if (didLMR)`
`1206`	`1206`	`{`
`1207`	`1207`	`int bonus = value > alpha ? stat_bonus(newDepth)`
`1208`	`1208`	`: -stat_bonus(newDepth);`
`1209`	`1209`
	`1210`	`+ if (captureOrPromotion)`
	`1211`	`+ bonus /= 4;`
	`1212`	`+`
`1210`	`1213`	`update_continuation_histories(ss, movedPiece, to_sq(move), bonus);`
`1211`	`1214`	`}`
`1212`	`1215`	`}`