1. Joined
    21 Jul '06
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    0
    14 Aug '06 18:20


    White to play.
  2. SubscriberBigDoggProblem
    The Advanced Mind
    bigdogghouse.com/RHP
    Joined
    26 Nov '04
    Moves
    117330
    14 Aug '06 18:362 edits
    Originally posted by ThudanBlunder
    White to play.
    1.Rxa7 (2.Ra8) 1...d6 2.Ra8+ Kd7 3.Rxb7 (4.Rcxc7) 3...d5 4.Rxd5#

    1...e6 and 1...f6 are refuted by 3.Rxc7 and 3.Rxd7 respectively.

    It looks like 1.Rxh7 works, with the same idea.

    Also, there are duals such as 1.Rxa7 d6 2.Ra8+ Kd7 3.Rxe7.

    Edit: Oops, 3.Rxb7 does not work. 3...e5!
  3. Joined
    12 Mar '03
    Moves
    37225
    14 Aug '06 19:09
    Originally posted by BigDoggProblem
    1.Rxa7 (2.Ra8) 1...d6 2.Ra8+ Kd7 3.Rxb7 (4.Rcxc7) 3...d5 4.Rxd5#

    1...e6 and 1...f6 are refuted by 3.Rxc7 and 3.Rxd7 respectively.

    It looks like 1.Rxh7 works, with the same idea.

    Also, there are duals such as 1.Rxa7 d6 2.Ra8+ Kd7 3.Rxe7.

    Edit: Oops, 3.Rxb7 does not work. 3...e5!
    I expect 1.Rxb7 or 1.Rxg7, avoiding any 'oops'es.
  4. SubscriberBigDoggProblem
    The Advanced Mind
    bigdogghouse.com/RHP
    Joined
    26 Nov '04
    Moves
    117330
    14 Aug '06 20:23
    Originally posted by Mephisto2
    I expect 1.Rxb7 or 1.Rxg7, avoiding any 'oops'es.
    According to my solving program, 1.Rxa7, Rxb7, Rxc7, Rxg7 and Rxh7 all work.

    The line I missed was 1.Rxa7 d6 2.Ra8+ Kd7 3.Rxd6+!! with Rook mates coming from three different directions, depending on how Black captures.
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