Daily #1
Difficulty
The proof
Three stages, spoiling only as much as you ask for. Stage 1 shows where; stage 2 shows the evidence; stage 3 shows the reasoning.
No proof requested
The pulsing cell is the next square provable by pure logic. Try it yourself before going further.
The outlined cells are the evidence — the placements that force the conclusion. The tinted region is the house the logic lives in.
Your level
Every puzzle is guaranteed solvable at your level — it will never need anything deeper.
What logic does each level use?
Your record
Certificate of fairness
Guesses required: 0
See the full logic breakdown
Q.E.D.
