1. Joined
    04 Jan '11
    Moves
    18636
    15 Jan '11 18:52
    Is it possible to create a position on a chess board with white to move where the only legal move checkmates black? it's probably quite simple but definitely an interesting idea sort of like a winning zugzwang
  2. Joined
    24 Jan '09
    Moves
    5514
    15 Jan '11 19:212 edits
    yes.
  3. Joined
    18 Jan '07
    Moves
    12463
    15 Jan '11 22:05
    Originally posted by Krb3710
    Is it possible to create a position on a chess board with white to move where the only legal move checkmates black? it's probably quite simple but definitely an interesting idea sort of like a winning zugzwang


    HTH; HAND.

    Richard
  4. Joined
    04 Jan '11
    Moves
    18636
    15 Jan '11 22:07
    Originally posted by Shallow Blue
    [fen]1R2b2k/6b1/2r2B1K/8/2B5/8/8/7R w - - 0 1[/fen]

    HTH; HAND.

    Richard
    I thought it would be simple enough, creates some interesting positions though
  5. e4
    Joined
    06 May '08
    Moves
    42492
    19 Jan '11 02:15
    This fits the criteria.

    By Ropke. White to play and mate in 6 moves.



    Don't be put off by the six moves.
    Teach anyone how to play chess and they will solve it right away.

    All it requires is that both sides play their only legal moves.
    The problem actually solves itself.

  6. Joined
    26 Apr '03
    Moves
    26771
    19 Jan '11 08:498 edits
    Originally posted by Shallow Blue
    [fen]1R2b2k/6b1/2r2B1K/8/2B5/8/8/7R w - - 0 1[/fen]

    HTH; HAND.

    Richard
    [b]


    oops, doesn't work, he can promote as something else, sorry! πŸ™
  7. Joined
    07 Sep '05
    Moves
    35068
    19 Jan '11 10:32
    I think this one fits - a pretty simple one.
  8. Joined
    07 Sep '05
    Moves
    35068
    19 Jan '11 15:57
    Or maybe this one...

  9. Joined
    04 Sep '10
    Moves
    5716
    20 Jan '11 21:20
    but here are two legal moves, no?
  10. Joined
    04 Sep '10
    Moves
    5716
    21 Jan '11 09:10
    which of course doesnt change the outcome... nice positions posted...
  11. Joined
    15 Jun '06
    Moves
    16334
    21 Jan '11 18:591 edit
    Originally posted by mtthw
    Or maybe this one...

    [fen]k6b/Pqn5/PPP5/8/8/3n4/8/nKn6 w - - 0 1[/fen]
    There are many legal moves in that position. 27 actually.
  12. Joined
    18 Jan '07
    Moves
    12463
    22 Jan '11 13:44
    Originally posted by tomtom232
    There are many legal moves in that position. 27 actually.
    Do explain. AFAICT, two pawns can take the queen, and no other white piece can move. And yes, it's white's move, according to the FEN.

    Richard
  13. Subscribersonhouse
    Fast and Curious
    slatington, pa, usa
    Joined
    28 Dec '04
    Moves
    53223
    08 Feb '11 03:333 edits
    Originally posted by greenpawn34
    This fits the criteria.

    By Ropke. White to play and mate in 6 moves.

    [fen]K1k5/P1Pp4/1p1P4/8/p7/P2P4/8/8 b - - 0 1[/fen]

    Don't be put off by the six moves.
    Teach anyone how to play chess and they will solve it right away.

    All it requires is that both sides play their only legal moves.
    The problem actually solves itself.

    [pgn]
    [FEN "K1k ...[text shortened]... 1p1P4/8/p7/P2P4/8/8 w - - 0 1"]
    1. d4 b5 2. d5 b4 3. axb4 a3 4. b5 a2 5. b6 a1=Q 6. b7[/pgn]
    I think he said mate on the move, so one move to mate but only one legal move.

    This fits the bill I think:



    b7 # Simple, no?
  14. Joined
    24 Jan '09
    Moves
    5514
    08 Feb '11 12:31
    yes.
  15. Subscribersonhouse
    Fast and Curious
    slatington, pa, usa
    Joined
    28 Dec '04
    Moves
    53223
    09 Feb '11 01:56
    Originally posted by Banana King
    yes.
    So it seems you must be a yes manπŸ™‚
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