Puzzle help
Stuck?
Tell us how far you've got in Logic Puzzles: Hard Puzzles and we'll give you the next step. Just the one you're missing, not the answer.
We won't solve it for you
You mark the cells you're sure about, and we fill in the slashes those marks force — the ones you'd have written yourself anyway.
Hints come in stages
First we point you at a clue. Ask again and we'll tell you what it pairs with, and only if you ask a third time do you get the mark itself. Ask once more and we'll show you the reasoning, so you can find the next one without us. If something's marked wrong we'll say so, and which block it's in.