Welcome to Chessdoku! It's like Sudoku but chess! This is level 0, so it's a trial run and will be fairly simple to solve (level 1 has been posted here). This puzzle is just for the concept. Here you have a grid of knights and queens:

chessdoku grid

Your goal is to get one knight and one queen each in 8 of the 9 3x3 squares.

Here are the general rules of Chessdoku:

  • Assume standard legal chess movements.
  • No capturing pieces.
  • Kings do not have special rules (e.g., check or checkmate).
  • Each piece may only be moved once.

Note: This is a test run to see how this type of puzzle will be received. I know it's easy, but please don't judge it based on difficulty; future puzzles (if this one is well-received) will be more complex and difficult).

  • 1
    $\begingroup$ Does each piece have to be moved? $\endgroup$
    – hexomino
    Commented Feb 15, 2021 at 17:50
  • $\begingroup$ Nice concept! Looking forward to the next one in the series (and to your next puzzles in general, since it seems like you've taken a break in the last few months :)) $\endgroup$ Commented Feb 15, 2021 at 18:08
  • $\begingroup$ @hexomino -- Nope, that's not required. $\endgroup$ Commented Feb 15, 2021 at 18:09
  • $\begingroup$ @LukasRotter -- Thanks! It's true, I was away for a while but I hope to be more active with these puzzles. $\endgroup$ Commented Feb 15, 2021 at 18:10
  • 1
    $\begingroup$ @Voldemort'sWrath when I read this before, I thought it was cheesedoku :/ . $\endgroup$
    – Anonymous
    Commented Feb 16, 2021 at 3:34

1 Answer 1


Credit to Lukas Rotter in the comments who corrected some mistakes I had.

Assuming we don't have to move all the pieces, here is one way to do it

Move all the knights first according to the diagram below, in any order.
Then move the top middle queen. Then move the rest of the queens according to the diagram, in any order.
enter image description here

  • 1
    $\begingroup$ Isn't the top middle queen blocked by the unmoved knight? $\endgroup$ Commented Feb 15, 2021 at 17:54
  • $\begingroup$ Damn, sniped. I actually have essentially the exact same answer as you, except with slightly different knight positions. $\endgroup$ Commented Feb 15, 2021 at 17:57
  • $\begingroup$ @LukasRotter D'oh! Thanks, fixed now $\endgroup$
    – hexomino
    Commented Feb 15, 2021 at 17:58
  • 1
    $\begingroup$ Also, the left middle queen would have to move before the right middle knight :) $\endgroup$ Commented Feb 15, 2021 at 17:59
  • $\begingroup$ @LukasRotter For such a straightforward question, I've really messed this up. Thanks again! $\endgroup$
    – hexomino
    Commented Feb 15, 2021 at 18:02

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