One day. One hidden picture.

Your daily moment of logic. Free to play, no account needed.

Finding the current UTC challenge…

A daily challenge you can come back to.

A date always points to the same 10×10 puzzle. Midnight UTC starts a new day, but never interrupts your current grid. Your progress is saved separately from free play.

A daily solve completed on its own UTC date counts toward your streak, with or without hints. Catch-up solves are recorded but do not repair a streak. Reveals do not count as solves. Timing uses your device clock.

Need one useful technique? Explore the worked examples →