Daily Rome Shot 619

Posted on 29 December 2022 by Fr. John Zuhlsdorf

From the new presepio at Ss. Trinità dei Pellegrini.

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Meanwhile, …

White’s b pawn threatens promotion.  How does black move and win?

Black to move.

NB: I’ll hold comments with solutions ’till the next day so there won’t be “spoilers” for others.

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3 Comments

  1. Tony Pistilli says:
    29 December 2022 at 5:04 PM

    Fun endgame puzzle! Either of the knight checks should do, and then you can move the knight to cover the promotion square, sacrifice the knight for the pawn (either taking the queen or exchanging if white king takes knight), and beat the white king to the back rank to make a queen with the two pawns.

  2. Synonymous_Howard says:
    30 December 2022 at 8:53 AM

    1. … Ne7+ and no matter which way the king runs
    2 … Nc6 covers the queening square

  3. Fr. John Zuhlsdorf says:
    30 December 2022 at 11:29 AM

    My take.

    White’s b pawn threatens promotion. White’s king is susceptible to checks by the hoppy black knight. BUT… are the checks of equal value? No, they are not.

    1. … Nb6+
    2. Kc7 Nd7! (the sac prevents promotion)
    3. Kxd7 Kxb2
    The knight is sac’d but the pawns trangender.

    What if the other check is applied?
    1. … Ne7+
    2. Kc7 Nd5+
    3. Kc8 (threatening a draw)

    Bottom line, the Nb6+ is the way to go.

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