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Posers and Puzzles

Posers and Puzzles

  1. 29 Mar '05 08:30 / 1 edit
  2. Standard member theangrystudent
    I am MIGHTY!
    30 Mar '05 01:32
    Maybe I'm just realy bad at these, but I think I see a winning line for black no matter what white does.
  3. Standard member Peakite
    Sais
    30 Mar '05 17:21
    I was having a look at it last night without much solving it either.

    A couple of thoughts I had were:

    As stalemate doesn't look an option, white must play Ng4 threatening mate or promotion with check at some point - as soon as black gets to play f1=Q someone has to win.

    Bishop move looks unlikely too, I can't see a threat.

    So that leaves either f7+ or fxh7. I'm leaning towards the latter as the first move, I've had a look at a few lines yet not manage to conclusively show either way as being correct (but did get to see possibilities if black plays both badly).
  4. Standard member theangrystudent
    I am MIGHTY!
    30 Mar '05 22:38
    Originally posted by Peakite
    I was having a look at it last night without much solving it either.

    A couple of thoughts I had were:

    As stalemate doesn't look an option, white must play Ng4 threatening mate or promotion with check at some point - as soon as black gets to play f1=Q someone has to win.

    Bishop move looks unlikely too, I can't see a threat.

    So that leaves either ...[text shortened]... show either way as being correct (but did get to see possibilities if black plays both badly).
    if 1. g7+, Nxg7 and white quickly runs out of threats.

    if 1. gxh7, Kxh7
    2. g6+, Kg8 and white quickly runs out of threats.

    And I grant that if black played badly enough, this game would end in a draw or possible defeat (if they do something really dumb). But GOOD chess puzzles are designed so that everything is forced after the first move. Not forced as in the other side only has one option to reply with, but forced as in there is a response to every possible move that the opposition could make.
  5. Subscriber BigDoggProblem
    The Advanced Mind
    30 Mar '05 22:48
    Is the diagram correct, THUDandBLUNDER?
  6. 30 Mar '05 23:15 / 2 edits
    Originally posted by theangrystudent
    But GOOD chess puzzles are.......
    ...ones where BigDogg asks if the diagram is correct.
    (Yes, it is.)
  7. Standard member theangrystudent
    I am MIGHTY!
    30 Mar '05 23:35
    Originally posted by THUDandBLUNDER
    [fen]5B1k/7p/6P1/4NnP1/8/8/K4p2/8 [/fen]
    Then feel free to blow my mind with the mystery solution at an time.
  8. Standard member Peakite
    Sais
    31 Mar '05 00:02
    Originally posted by theangrystudent
    if 1. g7+, Nxg7 and white quickly runs out of threats.

    if 1. gxh7, Kxh7
    2. g6+, Kg8 and white quickly runs out of threats.

    And I grant that if black played badly enough, this game would end in a draw or possible defeat (if they do something really dumb). But GOOD chess puzzles are designed so that everything is forced after the first mo ...[text shortened]... but forced as in there is a response to every possible move that the opposition could make.
    As I said, couldn't identify either way.

    Another think and Ba3, intending to move onto b2 could be something - setting up a potential double check, but I still think black can avoid it.
  9. Standard member theangrystudent
    I am MIGHTY!
    31 Mar '05 00:19
    1. B-a3, f1 and black gets a queen
    2. B-b2, Qa6+
    3. K-(b1 or b-3), gxh

    The knight and bishop alone are unable to mate the king, the black queen is protecting black's last pawn, the black pawn is preventing the white pawn from doing anything... so white just moves his king along the white squares and it should be an easy victory from there.
  10. 31 Mar '05 00:30 / 2 edits
    Originally posted by theangrystudent
    ....and it should be an easy victory from there.
    Possibly, but from your 'analysis' it is not clear for whom.
  11. Standard member theangrystudent
    I am MIGHTY!
    31 Mar '05 00:32 / 1 edit
    It should be an easy victory for black if white starts with 1. B-a3

    Black moving his king along the white squares was just a comment on how to deal with possible checks from white.
  12. Standard member Peakite
    Sais
    31 Mar '05 00:33 / 1 edit
    Qa6+ is no good anyway, can just move Kb1 - black can't do anything until he makes an attempt to bring the knight into play.
  13. 31 Mar '05 02:38
    Originally posted by theangrystudent
    Black moving his king along the white squares was just a comment on how to deal with possible checks from white.
    The Black king ain't going anywhere!
  14. Subscriber BigDoggProblem
    The Advanced Mind
    31 Mar '05 04:16
    [fen]5B1k/7p/6P1/4NnP1/8/8/K4p2/8 w - - 0 1[/fen]
    1.g7+!
    If 1...Kg8 2.Ng4 threatens Nf6+ and Nxf2, so...
    1...Nxg7 2.Nf7+! Kg8 3.Bc5!
    Threatens Bxf2 and Nh6+/Nf7+ perpetual check
    3...f1Q 4.Nh6+ Kg8 5.Bd4!!

    ...and Black can make absolutely no progress. His King is stuck in the corner, his Knight is pinned, he can't win the white Bishop with checks, and he can't play ...Qxg5+ due to Nf7+.
    DRAW
  15. Standard member XanthosNZ
    Cancerous Bus Crash
    31 Mar '05 07:34
    Am I missing something or does 5. ... Qc4+ win the bishop?