Daily Rome Shot 1699

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This…

Black to move. Mate in 4.

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

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2 Comments

  1. revueltos67 says:

    Black to move and mate in 4

    Throughout this problem white has many, many possible responses. Too many to write down exhaustively so some handwaving is in order.

    1. … Qxf3 forced
    2. gxf3+ {any other move leads to immediate mate via Qxf2#}
    2. … Kg3

    If
    3. any pawn move Rc1#

    Now we are left with white rook moves.

    If
    3. Rc8 RxRc8
    4. Kg1 or any pawn move Rc1#

    If
    3. Rd8 or e8 Rc1+
    White must block check with the rook.
    4. Rd1 or e1 RxR#

    If
    3. any other white rook move Rc1#

    If I missed anything please let me know.

  2. Dan says:

    SSPX necessity, proof

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