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This is the first of what I hope to be 13 puzzles based on a series I solved in Vancouver, BC by Rough Draft. He kindly gave me permission to use his ideas and for some of them I did. Others are solutions I attempted while trying to solve his, unsuccessfully. I hope you have fun with them. For the CS series, unless there is an indication on the photo, you are solving for all 15 numbers.
You can validate your puzzle solution with certitude.