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Posers and Puzzles

Posers and Puzzles

  1. 01 Apr '05 22:25 / 1 edit
    a premiere,
    My first composed chessproblem on rhp

    Is this position legal, and why is or isn't it.



    please also tell me what you think about it, hard, easy, fun, boring, etc.
  2. 01 Apr '05 22:27
    Originally posted by Siebren
    a premiere,
    My first composed chessproblem on rhp

    Is this position legal, and why is or isn't it.

    [fen]rkb2b2/1pnppp1p/6p1/8/7B/2P1Pn2/1P1PP2P/1N1QKBNR w - - 0 1[/fen]

    please also tell me what you think about it, hard, easy, fun, boring, etc.
    Oh I forgot,.... it is whites move offcourse,....
  3. Standard member PBE6
    Bananarama
    01 Apr '05 22:31
    Illegal. White's black-square bishop couldn't have gotten out because the b- and d-pawns haven't moved.

    Do I gots it?

  4. 01 Apr '05 22:42
    Nope
  5. Standard member Peakite
    Sais
    01 Apr '05 22:52 / 2 edits
    I think it is. (edit: especially from the previous post)

    White needs to have promoted a pawn onto a free black square, two of which at b8 and d8 will do.

    Black can get all of his king side pieces out of the way, thanks to the g pawn being moved - including bringing the rook over. Getting the queen out of the way.

    White plays his a pawn up to a5, rook escapes to b6.

    Blacks a pawn takes rook, then white pawn in turn captures pawns on b6, c7 before capturing a rook on d8 (from h8 originally, can get to that square), promoting to bishop.

    Black knight captures the bishop on c1 and the g pawn.

    Black loses his queen on e3 (pawn capture)
  6. 01 Apr '05 23:07
    Very good peakite.

    Now lets make things a little harder,

    Lets try the following diagram



    Given is that Black is still able to castle. Is this a legal position?
  7. Standard member Peakite
    Sais
    01 Apr '05 23:22 / 1 edit
    Yes, even with your stipulation of the king having not moved.

    The g-pawn can promote by capturing three pieces (not pawns) and the f-pawn needs to capture another.

    Queen and rook make two (the rook one of the last two captures - cannot escape from behind the pawns. Captures on f6/h6, g7 and either f8/h8.

    Both blacks a and c pawns can promote. White moves his a-pawn forward to let out the rook, c-pawn takes rook on b, then a pawn. Both black pawns can promote to provide extra pieces (queen, knight or rook will do).

    Whites black bishop taken as before.
  8. 01 Apr '05 23:30
    Originally posted by Peakite
    Yes, even with your stipulation of the king having not moved.

    The g-pawn can promote by capturing three pieces (not pawns) and the f-pawn needs to capture another.

    Queen and rook make two (the rook one of the last two captures - cannot escape from behind the pawns. Captures on f6/h6, g7 and either f8/h8.

    Both blacks a and c pawns can promote. White ...[text shortened]... to provide extra pieces (queen, knight or rook will do).

    Whites black bishop taken as before.
    100% Correct.

    Your good!