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A crossword position is a legal chess position with the following property: The board can be thought of as a crossword grid where the pieces on board work as clues. Each type of piece is a clue for their own name (KING, QUEEN, ROOK, BISHOP, KNIGHT or PAWN). That is, you can fill out the empty squares with letters corresponding to the pieces' names.

You do not need to be able to fill every square of the board – only all stretches of two or more letters directly to the right or below a piece. If a word can fit both down and across from the same clue, both have to be filled.

enter image description here

For example, the above is a simple crossword position. Note that neither of the bishops needs to clue the word BISHOP because no word of at least 2 letters fits below or to the right of them.

The puzzle

In the following position, white to move (and black to help), reach a crossword position on white's third move.

enter image description here

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    $\begingroup$ is black being 'friendly'? $\endgroup$
    – JMP
    Commented Jul 2, 2019 at 7:11
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    $\begingroup$ @JonMarkPerry Yeah, both players co-operate to make the position happen. $\endgroup$
    – Jafe
    Commented Jul 2, 2019 at 7:11
  • $\begingroup$ crossword tag maybe? $\endgroup$
    – Omega Krypton
    Commented Jul 2, 2019 at 7:18
  • $\begingroup$ do we need to fill partial names? $\endgroup$
    – Omega Krypton
    Commented Jul 2, 2019 at 7:22
  • $\begingroup$ @OmegaKrypton No partials, all filled-in words need to fit in the grid. $\endgroup$
    – Jafe
    Commented Jul 2, 2019 at 7:25

1 Answer 1

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After 

 1. Rh3  bxa1=N
 2. Qxb7 Kxe5
 3. Qh1

the board looks like this:

enter image description here

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  • $\begingroup$ how did you move your black knight to A1? $\endgroup$
    – SeaMonkey
    Commented Jul 2, 2019 at 8:54
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    $\begingroup$ Didn't: promoted a new one and captured the old. $\endgroup$
    – Bass
    Commented Jul 2, 2019 at 8:58
  • $\begingroup$ Wouldn't it also be solved before the last queen move? (Assuming we ignore that the puzzle requies 3 white moves and that we just want a crossword position) $\endgroup$
    – BrainStone
    Commented Sep 2, 2019 at 10:33
  • $\begingroup$ @BrainStone Well, no, for a couple of reasons. Firstly, the word "Queen" wouldn't fit if the queen were at b7, and even if white played Qa7 as the final move to fix that, the empty space at the bottom row would be too long for the word "Knight". $\endgroup$
    – Bass
    Commented Sep 3, 2019 at 8:55
  • $\begingroup$ From my understanding of the puzzle description both would be fine. @jafe can we maybe get a little clarification on it? Because from what I understand the words don’t have to be spelled out completely (if they can’t be) (otherwise the two gap rule hardly makes sense) and it’s also never said that there can’t be any blank spaces left. Unless I’m missing something. $\endgroup$
    – BrainStone
    Commented Sep 3, 2019 at 9:06

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