Solving a Calcdoku puzzle requires logic and arithmetic. In this one, the arithmetic focus is subtraction and division.
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The rule for light reflecting off a single mirror is simple, but when you add a few more mirrors, pinpointing the source of an image gets trickier.
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For this probability problem, you'd have a one-in-four chance of being correct if you guessed the answer at random.
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Distinguishing between true and false statements can help us get to other information, too. Which chests have gold in them?
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Two gears in a system rotate in opposite directions. What happens when you add another gear?
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There are lots of ways to add to nine, but is it possible to make it happen twice in this puzzle?
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Even without knowing the measure of any one angle, we can sometimes find relationships between them. What are these angles?
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