The IPP37 Puzzle Exchange saw no less than half a dozen or so symmetric shape puzzles. These and other similar style ones have become increasingly popular for puzzlers and designers in recent years. Especially so after **Symmetrick**, an innocuous looking two piece puzzle by Vesa Timonen got a Top 10 Vote Getter during the IPP33 Puzzle Design Competition.

**SPIR ALA Rips**

Not sure what the name means but Vesa Timonen seems to have done it again. Again just two pieces but this time with one hole in each piece. The goal is to place the pieces flat on a table such that the resulting shape can be bisected into two identical shapes. I absolutely had no luck with this one but did however enjoy the nice strong woody scent emanating from the Curly Birch used to produce this puzzle.

**French Revolution**

French colours adorned here of course. Consisting of four pieces, one blue and three red, the goal is to form three possible symmetrical shapes using a combination of the blue piece and any two of the three red pieces. As of this post, I only managed to find one of the three possible solutions. Like the name suggest, I kept going round in circles to no avail. The other two shapes have eluded me thus far.

**3 Pieces 9 symmetric shapes**

A straight forward self-explanatory name for the puzzle but this one is anything by straight forward. And the puzzle consist of only three pieces. The goal is to form 9 symmetric shapes but after two days of play, I managed only to form 3 shapes…a rather dismal result percentage if I may add.

**SYM-353**

Now this one is from me, yes! SYM-353 was my exchange puzzle at IPP37. Why the “353”? Well, it consist of three pieces; two with 3 sides and one with 5 sides. Sym 353 was a design collaboration between Stanislav Knot of the Czech Republic and me. My original design had just one solution (as I intended). But Stan saw my design and thought the three pieces could form another symmetrical shape. With some adjustments to the shapes, this proved to be true. Little did we realise that there were two more possible solutions when I sent the puzzle to Ken Johnson of Canada and Rex Perez of Philippines for testing. Each of them came up with a new and different solution, resulting in a total of 4 possible solutions.

SYM-353 is wonderful!!! Thanks for sharing the proportions. I found out the four symmetric shapes.

Daniel

You’re most welcome. Glad you enjoyed the puzzle.

Sym-353 is really interesting. I’ve found the 4 solutions too. Did you manage to proof that there are just 4?

And regarding the French Revolution Puzzle… I’ve found three solutions with revolution symmetry (one of them also has mirror symmetry, indeed). Since “revolution” is in the name it is quite possible that these are the 3 correct solutions but I’m a little bit dissapointed because I expected mirror symmetry in all of them… Could you confirm if “revolution symmetry” is the goal of this puzzle?