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Posted: **Sat May 25, 2019 6:39 pm**

Reading Stockfish KPK code today, I found this

 // Immediate win if a pawn can be promoted without getting captured
    else if (   us == WHITE
             && rank_of(psq) == RANK_7
             && ksq[us] != psq + NORTH
             && (    distance(ksq[~us], psq + NORTH) > 1
                 || (PseudoAttacks[KING][ksq[us]] & (psq + NORTH))))
        result = WIN;

where a Bitboard PseudoAttacks[][] is used (&) with a Square psq. Isn't this a bug ?

Posted: **Sat May 25, 2019 6:54 pm**

SF code uses overloading operators in several places and this is one of them:

...
inline Bitboard operator&( Bitboard b, Square s) { return b & square_bb(s); }
---

Andreas

Posted: **Sat May 25, 2019 6:56 pm**

RubiChess wrote: ↑Sat May 25, 2019 6:54 pm SF code uses overloading operators in several places. I guess this is one of them.

Andreas

Thanks ! this is pretty

Code: Select all

inline Bitboard  operator&( Bitboard  b, Square s) { return b &  square_bb(s); }

TalkChess.com

bug or not

bug or not

Re: bug or not

Re: bug or not