I'm pretty sure I solved it without using the X constraint !
Posted 18th Nov 2025 at 03:33
gareth Administrator Daily subscriber Has started but not yet finished this puzzle
I believe Elisabeth is right that you can't resolve the 2s and 6s in the bottom three rows without it.
However, when I make X puzzles, I do check that they can't be solved using what I consider 'fair logic' without using the X; but I don't actually check for uniqueness with and without the X - since so far as I'm concerned if the X is one of the expected solving steps then that makes it an X puzzle.
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Last edited by Elisabeth 15th Nov 2025 at 12:59
However, when I make X puzzles, I do check that they can't be solved using what I consider 'fair logic' without using the X; but I don't actually check for uniqueness with and without the X - since so far as I'm concerned if the X is one of the expected solving steps then that makes it an X puzzle.
You can however view other players' statistics and comments in the tables above.