Unlimited mode

Unlimited sun & moon puzzles

Endless boards, three difficulties. As many as you like.

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Balanced. ☀️🌙

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Tango without the daily limit

Love tango-style puzzles but hate waiting until tomorrow? This is unlimited play: every board is freshly generated, guaranteed to have exactly one solution, and solvable by pure deduction — never guessing. Pick Easy to learn the patterns, Medium for the classic daily feel, or Hard for boards that demand deeper line-by-line reasoning.

New to the rules? Start with the how-to-play guide — it covers every solving technique from opening moves to advanced eliminations. Or warm up with today's daily puzzle and keep your streak alive.