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  1. 04 Oct '12 04:07
    In the following problem, white plays first and mates black in two moves.

    John Rice
    1st prize
    The Problemist 2009

    #2
  2. Standard member SwissGambit
    Caninus Interruptus
    04 Oct '12 05:06
    Originally posted by Linden Lyons
    In the following problem, white plays first and mates black in two moves.

    John Rice
    1st prize
    The Problemist 2009
    [fen]8/3BKp2/p1R2B1p/r2k1p2/8/p1p1pP2/1qN5/1Nn1Qbb1[/fen]
    #2
    1.Qxc3! [2.Rd6]
    1...Bc4 2.Qxc4#
    1...Qxc3 2.Nxc3#
    1...Qb4+ 2.Nxb4#
    1...Qb8 2.Qd4#
    1...Bh2 2.Nxe3#
  3. 04 Oct '12 06:16
    Originally posted by SwissGambit
    [b]1.Qxc3! [2.Rd6]
    1...Bc4 2.Qxc4#
    1...Qxc3 2.Nxc3#
    1...Qb4+ 2.Nxb4#
    1...Qb8 2.Qd4#
    1...Bh2 2.Nxe3#
    [/b]
    Well done SG! There's also the post-key variation 1 ... Qb6 2 Qe5. I should add that there are a couple of tries (a try is a move which looks like it might be the key, but is thwarted by one black response). Can anyone spot these tries?
  4. 06 Oct '12 05:19
    The full solution:

    1 Qh4? (threat 2 Qd4)
    1 ... e2/Ne2 2 Qc4
    1 ... Nb3 2 Nb4
    1 ... f4 2 Qh5
    1 ... Qb6 2 Nxc3
    but 1 ... Ra4!

    1 Qxe3? (threat 2 Qe5 [not 2 Qd4?])
    1 ... Bh2 2 Qd4
    1 ... Bxe3 2 Nxe3
    1 ... Qb8 2 Nxc3
    1 ... Rc5 2 Rxc5
    but 1 ... Nd3!

    1 Qxc3! (threat 2 Rd6 [not 2 Qd4?/Qe5?])
    1 ... Qb8 2 Qd4
    1 ... Qb6 2 Qe5
    1 ... Qb4+ 2 Nxb4
    1 ... Qxc3 2 Nxc3
    1 ... Bh2 2 Nxe3
    1 ... Bc4 2 Qxc4