+ // Indicate PvNodes that will probably fail low if node was searched with non-PV search
+ // at depth equal or greater to current depth and result of this search was far below alpha
+ bool likelyFailLow = PvNode
+ && ttMove
+ && (tte->bound() & BOUND_UPPER)
+ && ttValue < alpha + 200 + 100 * depth
+ && tte->depth() >= depth;
+