Problems: Math & Logic

Four fresh puzzles. One daily habit.

Turn a spare moment into a satisfying challenge with Problems.cc. Play daily math games, explore past puzzles and build your problem-solving skills one small discovery at a time.

FIND YOUR FAVORITE GAME

• Crossnumber: a crossword with numbers. Follow interlocking Across and Down clues to deduce the digits.
• Magic Square: every line, one magic sum. Make the rows, columns and diagonals add up to the same total.
• Summit: small numbers, big possibilities. Choose the operations that reach the target.
• Cryptarithm: letters hide, numbers reveal. Give each letter a unique digit to make the equation work.

MAKE MATH CLICK

Sign in for personalized Practice: a daily set of problems matched to your math rating. Work through multiple-choice and numeric questions. Ask George for hints and follow-up explanations in an optional problem chat, and type or dictate your answer. You review dictated text before submitting it. Chat and some answer checking use OpenAI, with your permission.

SEE HOW FAR YOU'VE COME

Your Profile brings your math rating, streaks and activity together. Daily games build your playing habit; rated Practice answers shape your math rating.

MADE FOR YOUR DAILY BRAIN BREAK

• Four fresh math games every day.
• An Archive of past puzzles to explore.
• Puzzle progress saved as you play, so you can pick up where you left off.
• Optional sign-in to sync progress across devices.
• Light and dark appearances, rotation and adaptive layouts on iPhone and iPad.
• No ads. No account needed for daily games.

From Exact Science, the team behind problems.cc. Open today's puzzles and find your next bright idea.