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Fix an issue with pawn ordering

Browse source 
A subtle one because at leat 3 leading pawns
are needed to uncover this bug.

Found by stuwph
This commit is contained in:
Marco Costalba 2016-05-10 17:50:51 +02:00
parent 2681419141
commit 72bb4695d1
1 changed files with 1 additions and 1 deletions
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2
src/syzygy/tbprobe.cpp
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@ -690,7 +690,7 @@ uint64_t probe_table(const Position& pos, Entry* entry, WDLScore wdl = WDLDraw,
idx = Pawnidx[leadPawnsCnt - 1][23 - MapToEdges[squares[0]] / 2];
for (int i = 1; i < leadPawnsCnt; ++i)
idx += Binomial[i][MapToEdges[squares[i]]];
idx += Binomial[i][MapToEdges[squares[leadPawnsCnt- i]]];
next = leadPawnsCnt;
goto encode_remaining; // With pawns we have finished special treatments