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I'm playing through Mario's Super Picross currently and after nearly 200 puzzles this one finally has me stumped as to how it is intended to be solved. What is the next step to solving this?

partially filled in puzzle

Notes:

  • This is a "Mario" stage so the game penalizes mistakes and doesn't provide a mechanism for forward-solving/backtracking. I have "solved" the puzzle by attempting to fill the rightmost column and using penalty/lack of penalty to gain information about the correct solution, but I'd like to get this with logic!

  • I can write out the game mechanics in more detail if requested but I don't think they're super relevant beyond the above note.

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2 Answers 2

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In the rightmost column

the 6 must be at the top.

If it were are the bottom, row 17 (always included in the 6) would force the 7 in the next column to the bottom too, but it wouldn't fit because of the 1 on row 18 (also always included in the 6) forces r18c19 to be empty.

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  • $\begingroup$ Accepting this answer because it's simpler and progresses the rest of the puzzle with more ease :) $\endgroup$
    – Will
    Jan 21 at 3:42
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Look at the 9th column (2,7,1):

you've filled two cells there; the lower one could be from either the 1 or the 7, but the upper one must be from the 7. Extending downwards from that upper one, there's not enough space for it to be the top cell of the 7, so the one above it must be filled too.

Then in that row (4,9),

you can blank out one more cell on the right.

Then in that column (8,3),

the 8 must be above the newly-blanked cell and the 3 must be below, as there's not space for both of them together on either side.

That allows you to fill in quite a few cells in that column, which will then enable you to make more deductions in the relevant rows.

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  • $\begingroup$ Ah, I love the smell of a fresh nonogram in the evening :-) $\endgroup$ Jan 16 at 17:13
  • $\begingroup$ I knew I was missing something super obvious! $\endgroup$
    – Will
    Jan 16 at 17:27

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