I made up this puzzle a few days ago and I couldn't resist sharing it.

You have a set of oddly-colored tetronimoes. The idea is to put them in the target shape in such a way that the colors on the pieces also form different tetronimoes. This is a little difficult to explain, so I made a simple 4x4 puzzle and added the solution so you can see what I'm talking about. See If you can solve the three others! I'll add more as I make them.

Hello Jorbs3210,

This was fun. Thank you. Here's my solution for the first two (spoiler alert) http://goo.gl/fVKaw (oops, first version had a tiny mistake, now it is fixed)

The third one seems to have a problem; the number of red and green don't add up to a multiple of four. Is that a mistake?

Skarabajo

Oops. You're right. I fixed it.

Thanks for trying these! How hard were they? I have a few more designed, I'll post them when I make them.

Hello Jorbs3210,

Thanks for fixing that last one. So, today I had a little more time to give it a try. Here's my solution for the third puzzle (spoiler alert!) http://goo.gl/q8udM

You asked "how hard were they?". I used Adobe Illustrator to manipulate the tetrominoes easily (I used a keyboard shortcut to rotate 90 degrees using an Illustrator action). Now, since I saved my progress in several files, I can see how long it took me to solve each puzzle. The first one took me less than 5 minutes, the second one took me about 12 minutes and the last one took me about 39 minutes. Yeap, the last one was tricky.

Peace,

Skarabajo.