1. Standard memberclandarkfire
    Grammar Nazi
    Auschwitz
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    18 Jun '08 20:461 edit
    A friend gave me this position, saying there was a mate in two. Probably I'm just a doofus, but I dont see any mate in two, and am thinking it is not possible. Your thoughts?

  2. Standard memberSwissGambit
    Caninus Interruptus
    2014.05.01
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    18 Jun '08 21:00
    Originally posted by clandarkfire
    A friend gave me this position, saying there was a mate in two. Probably I'm just a doofus, but I dont see any mate in two, and am thinking it is not possible. Your thoughts?

    [fen]2nR4/Q3b3/8/1Pppk3/8/2P2K1B/8/8 w[/fen]
    I'm afraid your friend is right.

    1.Rd6!! - a spectacular shot. The threat is simply 2.Re6#.
    1...d4 2.Qxc5
    1...Bxd6 2.Qg7
    1...Nxd6 2.Qxe7
    1...Kxd6 2.Qb8
    Imagine the look you'd get from an opponent if you actually got to play a move like 1.Rd6!! in a real game!
  3. Standard memberclandarkfire
    Grammar Nazi
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    18 Jun '08 21:19
    Originally posted by SwissGambit
    I'm afraid your friend is right.

    1.Rd6!! - a spectacular shot. The threat is simply 2.Re6#.
    1...d4 2.Qxc5
    1...Bxd6 2.Qg7
    1...Nxd6 2.Qxe7
    1...Kxd6 2.Qb8
    Imagine the look you'd get from an opponent if you actually got to play a move like 1.Rd6!! in a real game!
    Ah, another something you would never look for.
  4. Out To Lunch
    Joined
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    10410
    18 Jun '08 21:27
    Originally posted by clandarkfire
    Ah, another something you would never look for.
    I know! I would have done something like taking the knight, which seems like a good enough move for me.

    1. Rh6!! appeared to me like 1. Rh6[what in hell is he doing??????]??

    I wish I had the mind to look for things like that...

    K-
  5. Standard memberSwissGambit
    Caninus Interruptus
    2014.05.01
    Joined
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    92274
    19 Jun '08 07:571 edit
    Originally posted by kfennessy
    I wish I had the mind to look for things like that...

    K-
    The trick is watching out for troublesome Black King flights. If he is allowed to go to f6, White will not be able to set up a mate.

    So, the key move must stop him from going there. And that's the main point. Since zugzwang isn't possible [how on earth does 1...d4 damage Black's position?], then we need a move that

    a) stops ...Kf6
    b) threatens mate next move

    After this realization, finding 1.Rd6!! is straightforward.
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