Fit tetrominos into the grid, so that each circle is on a different 4-block shape.

You can Print sheets of puzzles, or alternatively Play it in your browser.

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What I Didn't Do

I didn't make a game with the number 100 being central to the puzzle.
That would've been ideal as the 100th puzzle-type on the site, but my mind's too mushy to have come up with anything.
Bah, humbug!