Tango Unlimited

Endless Tango

• Easy: lots of starting symbols. Solvable with the pair and gap rules alone.
• Medium: fewer givens. You'll need to count suns and moons per line.
• Hard: very few givens and more signs. Expect to think about whole lines at once.
• Expert: 8×8 grids with four of each symbol per line.

Every puzzle has a shareable link, so a friend can play the exact same grid and compare times.

1. Fill every cell with a sun or a moon.
2. Each row and column has equal numbers of suns and moons (three of each on a 6×6).
3. No more than two of the same symbol next to each other, across or down.
4. Cells joined by = are the same. Cells joined by × are opposite.