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Thread: KRR vs K

  1. #1
    CC Candidate Master
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    KRR vs K

    wKa1,Ra2,Rb1 or 8/8/8/8/8/8/R7/KR6 w

    White wins by checkmating Black, Black wins by playing 50 moves or if White makes an illegal move. With best play, who wins? How many moves?

  2. #2
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    Quote Originally Posted by Czentovic
    wKa1,Ra2,Rb1 or 8/8/8/8/8/8/R7/KR6 w

    White wins by checkmating Black, Black wins by playing 50 moves or if White makes an illegal move. With best play, who wins? How many moves?
    A possible solution:

    1.Rbb2
    2.Ra3
    3.Kb1
    4.Kc2
    5.Rc3
    6.Rb1
    7.Rd1
    8.Rd2
    9.Kd1
    10.Ke2
    11.Re3
    12.Rd1
    13.Rf1
    14.Rf2
    15.Kf1
    16.Kg2
    17.Rg3
    18.Rf1
    19.Rh1#

    It's not pretty or efficient, but I think it works

  3. #3
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    Not quite what I had in mind, but it is completely correct and fun to watch - well done!

  4. #4
    Monster of the deep Kevin Bonham's Avatar
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    Am I missing something here? Where is the black king? Or is it invisible?

  5. #5
    CC Grandmaster Desmond's Avatar
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    Quote Originally Posted by Kevin Bonham
    Am I missing something here? Where is the black king? Or is it invisible?
    I think it's taken that the black king may be on any square and the technique should still work.
    So what's your excuse? To run like the devil's chasing you.

    See you in another life, brotha.

  6. #6
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    Yes, the Black King is on any square which is not prohibited by the previous play. Also, I forgot to mention that Black wins if White stalemates. (But Mr. Pawn obviously realised that)

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