QuadClue

Sixteen squares. Four colors. Every color appears exactly four times. The clues sit along the top and left edges. Each one names a single color and tells you how many of it belong in that line. Nothing is hidden and nothing is random — every puzzle is built to have exactly one answer, and every answer can be reached by reasoning alone. HOW IT WORKS Tap a square to cycle through the colors. Press and hold to pick one straight from the palette. An inner clue points at one row or one column. An outer clue is twice as long, because it covers two rows or two columns at once — and that extra reach is what makes the hardest levels solvable. When a clue is satisfied, its border turns to a dashed line so you can see at a glance what is already accounted for. FIVE DIFFICULTIES Easy, Normal and Hard give you eight clues: one for every row and every column. That is enough to finish on its own.…