Posers and Puzzles

Posers and Puzzles

  1. Joined
    25 Aug '06
    Moves
    0
    17 Sep '07 15:581 edit
    I want to construct a proof game for the following position:

    White moved last.
    Please help 🙂
  2. Joined
    11 Nov '05
    Moves
    43938
    17 Sep '07 19:38
    Originally posted by David113
    I want to construct a proof game for the following position:
    [fen]1B6/n1NPpP1p/pPPkrp2/PRppp3/b7/Kp6/Rr1P3P/n1b5[/fen]
    White moved last.
    Please help 🙂
    What about b7-b8=B
    or Na8-c7 alt. Na8xc7
    or Rb4-b5 alt. Rb4xb5

    Is the problem that there is only one possible move...?
  3. Joined
    25 Aug '06
    Moves
    0
    17 Sep '07 20:031 edit
    There are a few possible last moves. What I need is not the last moves but a complete game score (which of course is not unique). It is probably not very difficult but somehow I always make a mistake and get stuck.
    The general structure of the game, without giving many specific moves, will also help.
    general structure = which piece captured which, in what order, in what order did the pieces come to their final squares, etc.
  4. Standard memberSwissGambit
    Caninus Interruptus
    2014.05.01
    Joined
    11 Apr '07
    Moves
    92274
    17 Sep '07 20:031 edit
    Originally posted by David113
    I want to construct a proof game for the following position:
    [fen]1B6/n1NPpP1p/pPPkrp2/PRppp3/b7/Kp6/Rr1P3P/n1b5[/fen]
    White moved last.
    Please help 🙂
    White captured bQ on the d-file. Black made 4 captures to get the pawn structure [b- and c-pawns cross-capture to get behind wP's, and g- and f- shifted one left each]. This accounts for all captures.

    wPg2 is not on the board, and could not have been captured; it must have promoted.

    Retraction could run: 1.Rb4 Bb5 2.Ka4 Be2 3.Rg4 Nb5 4.Ra3 Nd4 5.b5 cb6[+R] 7.Rc3 Kc5 8.Rcg3 etc. The 3rd Rook is the promoted g-pawn.

    Edit: This is a good enough hint to allow construction of a PG. Giving the whole thing would be a bit tedious. 🙂
  5. Joined
    25 Aug '06
    Moves
    0
    17 Sep '07 20:10
    Originally posted by SwissGambit
    White captured bQ on the d-file. Black made 4 captures to get the pawn structure [b- and c-pawns cross-capture to get behind wP's, and g- and f- shifted one left each]. This accounts for all captures.

    wPg2 is not on the board, and could not have been captured; it must have promoted.

    Retraction could run: 1.Rb4 Bb5 2.Ka4 Be2 3.Rg4 Nb5 4.Ra3 Nd4 5.b5 ...[text shortened]... od enough hint to allow construction of a PG. Giving the whole thing would be a bit tedious. 🙂
    Thanx 🙂
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