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Let's look at the square with the light-blue dot on the left side of the puzzle below. It is obvious this square can only belong to the block of 3. Next, let's examine the dark-blue 14 in the bottom area of the puzzle. There are four combinations for a block of 14: 1x14, 14x1, 2x7 and 7x2. However, because of the rule that each block must contain one clue, the only block which can fit in is 7x2 as shown below. We can also proceed with other easy steps, the dark-blue 2, the beige 2, the light-blue 2 and the red 2.
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