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2022 Puzzle round 2 IB

This doesn't matter for the competition, but in the Instruction Book for puzzle round 2, the Curve Data puzzle (number 12) has an answer in the text that differs from an answer in the puzzle itself. (AABBA vs BBAAB.) This is unlikely to affect the competition, but I felt it should be mentioned regardless.

The example puzzle was changed when we discovered during testing that the answer was not unique, but I missed changing it in the text. Thanks for catching that, and when the puzzle type appears again it will be fixed.