Chess Alpha-Beta Iterative Deepening

Alpha-beta pruning with iterative deepening — Stockfish's core search strategy. Alpha tracks the maximizer's best guarantee; Beta the minimizer's. Branches outside the window are pruned.

Speed:

Frame 0 / 0

Depth limit: —  |  α: -∞  |  β: +∞

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unvisited

expanding

visited (max)

visited (min)

pruned

best from prev depth