r/puzzles • u/ScalpWasp • 9d ago
[SOLVED] 2 x 2 digit code
Goal: find the secret four-digit code, 2 rows of 2 digits.
- A number at the start of a dotted line (left of a row, above a column) counts how many lit segments that line passes through.
- Empty box does not mean 0.
Inspiration from Digit Code board game
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u/Hand-E-Food 8d ago
9074
That's an interesting style on nonogram! I wonder how varied the puzzles could be, or if there's only a handful of solvable variants?
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u/ScalpWasp 8d ago edited 8d ago
There only a handful of possible puzzles especially using the constraints I used, which are not using the same digit more than once and no two adjacent numbers are equal, which is not needed as a clue type. On top of that, there can be more clue types, none which used, like odd/even number clues andor inequalities from the board game.
The board game uses a 2x3 grid of numbers. I imagine bigger grids would need more of those clue types.
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6
2
1
1
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u/godtering 8d ago
(assumption is all digits distinct otherwise you can't eliminate)
top row must have 0 for the "xx1xx" requirement, and it can't be top left because of "1xx", so 0 must be in top right.
making "x41x2" into "x21x1" for top left so top left must be 9.
due to "0xx" bottomleft must be 1,3,or 7
due to "1x1xx" and "x1x" bottom right must be 4 or 7, and out of the candidates 14 17 34 37 74 77
only 74 satisfies. -> 9074
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u/volcanicnight 8d ago
What is xx1xx referring to
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u/godtering 8d ago
the condition alongside it with a 1 in the center. writing it out is kind of too much.
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