Update some comments (#973)

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 45f50a6353c649b1eb80eb1ca6b082a509fbfdde..a7dbd90d522608b992679ec283d64c80bc197f40 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -875,7 +875,8 @@ moves_loop: // When in check search starts from here
       moveCountPruning =   depth < 16 * ONE_PLY
                         && moveCount >= FutilityMoveCounts[improving][depth / ONE_PLY];
 
-      // Step 12. Extend checks
+      // Step 12. Extensions
+      // Extend checks
       if (    givesCheck
           && !moveCountPruning
           &&  pos.see_ge(move, VALUE_ZERO))
@@ -901,7 +902,7 @@ moves_loop: // When in check search starts from here
               extension = ONE_PLY;
       }
 
-      // Update the current move (this must be done after singular extension search)
+      // Calculate new depth for this move
       newDepth = depth - ONE_PLY + extension;
 
       // Step 13. Pruning at shallow depth
@@ -953,6 +954,7 @@ moves_loop: // When in check search starts from here
           continue;
       }
 
+      // Update the current move (this must be done after singular extension search)
       ss->currentMove = move;
       ss->counterMoves = &thisThread->counterMoveHistory[moved_piece][to_sq(move)];