History update for pruned captures

locutus2 · snicolet · commit b64a9bba9a4f · 2020-01-29T23:38:33.000+01:00
Use a SEE pruned capture move for history updates: this patch collects pruned capture moves also in the failed captures list, so that they get an update in capture history. STC: LLR: 2.95 (-2.94,2.94) {-1.00,3.00} Total: 11124 W: 2222 L: 2089 D: 6813 Ptnml(0-2): 186, 1280, 2506, 1381, 200 http://tests.stockfishchess.org/tests/view/5e28995fc3b97aa0d75bc294 LTC: LLR: 2.94 (-2.94,2.94) {0.00,2.00} Total: 25552 W: 3418 L: 3211 D: 18923 Ptnml(0-2): 168, 2354, 7538, 2490, 200 http://tests.stockfishchess.org/tests/view/5e2943734744cfa4d6af415b Closes official-stockfish/Stockfish#2511 Bench: 4810202
diff --git a/src/search.cpp b/src/search.cpp
@@ -1028,7 +1028,11 @@ namespace {
                   continue;
           }
           else if (!pos.see_ge(move, Value(-194) * depth)) // (~25 Elo)
-                  continue;
+          {
+              if (captureOrPromotion && captureCount < 32)
+                  capturesSearched[captureCount++] = move;
+              continue;
+          }
       }
 
       // Step 14. Extensions (~75 Elo)

Original file line number	Diff line number	Diff line change
`@@ -1028,7 +1028,11 @@ namespace {`
`1028`	`1028`	`continue;`
`1029`	`1029`	`}`
`1030`	`1030`	`else if (!pos.see_ge(move, Value(-194) * depth)) // (~25 Elo)`
`1031`		`- continue;`
	`1031`	`+ {`
	`1032`	`+ if (captureOrPromotion && captureCount < 32)`
	`1033`	`+ capturesSearched[captureCount++] = move;`
	`1034`	`+ continue;`
	`1035`	`+ }`
`1032`	`1036`	`}`
`1033`	`1037`
`1034`	`1038`	`// Step 14. Extensions (~75 Elo)`