Removing the conditional bonus calculation

FauziAkram · Disservin · commit 0dabf4f3fab2 · 2025-03-21T11:22:25.000+01:00
The new value is just a guessed value. Passed STC: https://tests.stockfishchess.org/tests/view/67d5ee09517865b4a2dfd2df LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 52128 W: 13516 L: 13312 D: 25300 Ptnml(0-2): 157, 6044, 13451, 6262, 150 Passed LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 42384 W: 10855 L: 10657 D: 20872 Ptnml(0-2): 19, 4554, 11852, 4744, 23 https://tests.stockfishchess.org/tests/view/67d5f9d3517865b4a2dfd2ef closes #5933 Bench: 2030154
diff --git a/src/search.cpp b/src/search.cpp
@@ -1279,7 +1279,7 @@ Value Search::Worker::search(
                     value = -search<NonPV>(pos, ss + 1, -(alpha + 1), -alpha, newDepth, !cutNode);
 
                 // Post LMR continuation history updates
-                int bonus = (value >= beta) * 1800;
+                int bonus = 1600;
                 update_continuation_histories(ss, movedPiece, move.to_sq(), bonus);
             }
             else if (value > alpha && value < bestValue + 9)

Original file line number	Diff line number	Diff line change
`@@ -1279,7 +1279,7 @@ Value Search::Worker::search(`
`1279`	`1279`	`value = -search<NonPV>(pos, ss + 1, -(alpha + 1), -alpha, newDepth, !cutNode);`
`1280`	`1280`
`1281`	`1281`	`// Post LMR continuation history updates`
`1282`		`- int bonus = (value >= beta) * 1800;`
	`1282`	`+ int bonus = 1600;`
`1283`	`1283`	`update_continuation_histories(ss, movedPiece, move.to_sq(), bonus);`
`1284`	`1284`	`}`
`1285`	`1285`	`else if (value > alpha && value < bestValue + 9)`