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Thread: Incredibly hard chess puzzle. Mate in 3

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    Default Incredibly hard chess puzzle. Mate in 3

    I should warn everyone not to lose sleep over this one. It is tough to find the solution on you own unless you are looking in the right place. It is a classic puzzle so some may have already seen this one.

    White to move, Mate in 3



    Now there is a quark to this one, but it is completely within the normal rules of chess. Black has a defense. If you are thinking you have a mate in two by

    1. Qf1+ Kxh2
    2. Rh3#

    Black's defense trumps that. The key is to find black's defense and how to defeat it.

    Because this one can be hard, I will try to give as many hints as possible. Spoilers will be posted in a day or so.
    The Knights are your friends. Unless they just forked your queen and king.....

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    Tin Cup Champ 2004 Just2Good's Avatar
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    Quote Originally Posted by LoyalSoldier View Post
    If you are thinking you have a mate in two by

    1. Qf1+ Kxh2
    2. Rh3#

    Black's defense trumps that. The key is to find black's defense and how to defeat it.

    I can't see how black escapes mate that two move checkmate variation Loyal Soldier!
    .
    "The fox knows many things, but the hedgehog knows one big thing."

    ~ Isaiah Berlin ~

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    Answer hidden below

    [spoil=Answer]1. Rxg6 otherwise Black claims a draw by 50 move rule.[/spoil]
    Last edited by Just2Good; 01-04-08 at 10:37 AM. Reason: Added Spoiler Tags with Shaun's Permission

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    Tin Cup Champ 2004 Just2Good's Avatar
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    Quote Originally Posted by shaun View Post
    Answer hidden below (highlight to reveal)

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    I think you just sunk Loyal Soldier's Battle Ship Shaun!

    AO

    ps- Any objections to me putting your answer in spoiler tags [spoil=answer] and then closing the tags? It looks less caveman style, and more sophisticated.
    .
    "The fox knows many things, but the hedgehog knows one big thing."

    ~ Isaiah Berlin ~

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    Whatever works best.

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    Senior Member vagrantnomad's Avatar
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    Quote Originally Posted by Arrogant-One View Post
    I think you just sunk Loyal Soldier's Battle Ship Shaun!

    AO

    and with a move to spair , nice!
    I never would have thought of that!
    Last edited by Just2Good; 01-04-08 at 10:38 AM. Reason: Fixed Quote box

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    Quote Originally Posted by shaun View Post
    Whatever works best.
    I have to ask if you have seen this one before because it is a classic problem. I also gave more information than I should have.
    The Knights are your friends. Unless they just forked your queen and king.....

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    No I hadn't seen it before. Indeed I was more interested in whether the position was legal or not, but once I worked out how the White bishop made it to b1, the penny dropped, and I realised what the 'trick' was. btw Spending the last 2 weeks as a tournament arbiter certainly helped.

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    Tin Cup Champ 2004 Just2Good's Avatar
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    Default Never Would Have Gotten It!

    Quote Originally Posted by LoyalSoldier View Post
    I have to ask if you have seen this one before because it is a classic problem. I also gave more information than I should have.
    I never would have gotten it, but having worked out the forced mate with Rh3 I would have given up the chase at that point. Anything else in your book of puzzles Loyal Soldier?
    .
    "The fox knows many things, but the hedgehog knows one big thing."

    ~ Isaiah Berlin ~

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    Quote Originally Posted by Arrogant-One View Post
    I never would have gotten it, but having worked out the forced mate with Rh3 I would have given up the chase at that point. Anything else in your book of puzzles Loyal Soldier?
    Oh I am sure I could find a few. I got a whole book of head scratchers.
    The Knights are your friends. Unless they just forked your queen and king.....

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    Senior Member Euro-Chess's Avatar
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    Quote Originally Posted by LoyalSoldier View Post
    Oh I am sure I could find a few. I got a whole book of head scratchers.
    The en passant problem was very tricky LOL - Looking forward to the next puzzle.
    “When you see a good move, look for a better one” - Emanuel Lasker

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    BTW here is a proof game to show how we got this position.

    http://www.mrmip.net/mipsofacto/plaksin.htm

    Thanks to Mr. Mip.
    The Knights are your friends. Unless they just forked your queen and king.....

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    Senior Member YumYum's Avatar
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    Quote Originally Posted by shaun View Post
    Answer hidden below

    [spoil=Answer]1. Rxg6 otherwise Black claims a draw by 50 move rule.[/spoil]

    That's the answer I got too! I usually don't pick up on these, but I guess I got a little lucky!
    Panda is what the world was waiting for!

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    Quote Originally Posted by LoyalSoldier View Post
    I should warn everyone not to lose sleep over this one. It is tough to find the solution on you own unless you are looking in the right place. It is a classic puzzle so some may have already seen this one.

    White to move, Mate in 3



    Now there is a quark to this one, but it is completely within the normal rules of chess. Black has a defense. If you are thinking you have a mate in two by

    1. Qf1+ Kxh2
    2. Rh3#

    Black's defense trumps that. The key is to find black's defense and how to defeat it.

    Because this one can be hard, I will try to give as many hints as possible. Spoilers will be posted in a day or so.
    Just looking at that puzzle makes my head hurt! I am not going to look at any posts other than post 1 though, in case some has already solved this one.

  15. | #15
    Senior Member Ehm TO's Avatar
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    Quote Originally Posted by Simon View Post
    Just looking at that puzzle makes my head hurt! I am not going to look at any posts other than post 1 though, in case some has already solved this one.
    It does look like a mate in 2, I can't see any defence for black - so the 50 move rule stuff is ridiculous

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