Move Analysis

The Move Analysis Window displays the tree of moves created during SharpChess's Search function. It shows moves from the last search iteration

Notation

• *PV* - Principal Variation (PV) Node score inside the Alpha-Beta window.(Type 1)
• (CUT) - Cut (fail-high) Node fail-high node where a child node cause a beta-cutoff. (Type 2)
• (ALL) - All (fail-low) Node fail-low node in which no move's score exceeded alpha. (Type 3)


• (Q:CUT) - Beta cutoff in Quiescence.
• (Q:PAT-CUT) - Stand-pat beta cutoff in Quiescence.


• -PVS-WIN- - Principal Variation Search successful using zero window.
• -F- Principal Variation Search failed. Perform re-search using full window.


• E-1REP - One Reply Extension
• E-CHK - Check Evation Extension
• E-RECAP - Recapture Extension
• E-PAWN7 - Passed Pawn Extension


• R-FUT3 - Futility Pruning where Depth=2 and LazyEval + Margin = Knight.
• R-FUT5 - Extended Futility Pruning where Depth=3 and LazyEval + Margin = Rook.
• R-FUT9 - Deep Futility Pruning where Depth=4 and LazyEval + Margin = Queen.


• O-HASH - Best move from Transposition table.
• O-PROM - A pawn promotion.
• O-SEE - Move order value of winning (or losing) capture using Static Exchange Evaluation (SEE).
• O-MVV - Where SEE is even, move order value of MVV-LVA (Most Valuable Victim - Least Valuable Aggressor).
• O-KILL(A|B) - Killer Move from slot A or B.
• O-HIST - Move order value from History Heuristic.
• O-SV - Move order value from Piece-Square Value tables.

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