Here is one Curve Data puzzle.

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Here is one Curve Data puzzle.

Here is one Curve Data puzzle.

Here is one Curve Data puzzle.

Here is one Curve Data puzzle.

Here is one Curve Data puzzle.

Here is one innocent-looking 5 by 5 Masyu puzzle:

Inflate it to twice its original size, though, and it turns into a full-blown 10 by 10 Semi-Liar Masyu:

Here is one Star Battle Pentominous puzzle.