Free — Add numbers to 100, with no badges. A simple way to get started.
Premium — Set your target to 100 or 1000, earn badges, and enjoy more challenges.
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Select two numbers to swap their positions. Make every row and column add up to the same total. Any valid solution is correct. The timer starts in the background when you make your first move and stops when you click CHECK ANSWER.
Click the button below to start adding numbers to reach 100.