Skip resolving fail high at low depths, take 3.

pb00068 · pb00068 · commit 95982a0c6117 · 2018-10-12T14:27:33.000+02:00
Test on top of PR official-stockfish#1768 bench: 2187615
diff --git a/src/search.cpp b/src/search.cpp
@@ -439,7 +439,7 @@ void Thread::search() {
               }
               else if (bestValue >= beta)
               {
-            	  if (mainThread && rootDepth < 10 * ONE_PLY )
+            	  if (mainThread && rootDepth < 18 * ONE_PLY )
             		  break;
                   beta = std::min(bestValue + delta, VALUE_INFINITE);
                   ++failedHighCnt;

Original file line number	Diff line number	Diff line change
`@@ -439,7 +439,7 @@ void Thread::search() {`
`439`	`439`	`}`
`440`	`440`	`else if (bestValue >= beta)`
`441`	`441`	`{`
`442`		`- if (mainThread && rootDepth < 10 * ONE_PLY )`
	`442`	`+ if (mainThread && rootDepth < 18 * ONE_PLY )`
`443`	`443`	`break;`
`444`	`444`	`beta = std::min(bestValue + delta, VALUE_INFINITE);`
`445`	`445`	`++failedHighCnt;`