3 ms·

http://imgur.com/EYF3kzS http://imgur.com/EYF3kzS I don't understand what's wrong here.

• mankyd 12y ago
  Rows 3 and 5 are identical.
  • tromp 12y ago
    This rule is easily overlooked in the tutorial, since the example shown can already be resolved using earlier rules (balancing red/blue in columns). The tutorial must use an example where unique rows/columns is the only way to resolve the choice...
  • anon4 12y ago
    Oh, right. But what about the ones on row 1?
    • sp332 12y ago
      Well if you switch the squares on row 3, you have to switch the square on row 1 as well. Otherwise the columns will not have even numbers of red and blue squares.
      • anon4 12y ago
        Oh. It's really confusing to show not only the current mistake but also the mistakes that would be introduced by fixing it.
        • sp332 12y ago
          True. There is only a single solution to each puzzle, so it just highlights all the blocks which don't match the known solution.
    • deleted 12y ago
      [deleted]
  • vlunkr 12y ago
    I guess I missed this rule. I got into a similar situation and thought there was a bug