I was espacially interested in Richard Evans' Rings = Sticks D, because of the nice number of moves (35) for 3 boards only.

But playing with functional models made of Livecube, I changed my mind and decided that it was not the most interesting.

Here is a summary of my findings :

**2 sticks / 2 boards**

Richard Evans' Rings = Sticks A.

Moves : 6.3.3

I found this one too easy.

**2 sticks / 3 boards**

Frank Worrel's Rings and Things 2 stick 5.

Moves : 9.8.3.3

I have known this one for a long time. I didn't try it again today, but I used to like it a lot. It's not difficult, but the solution is very nice. It can also be assembled from scratch, which is a bit more difficult.

Richard Evans' Rings = Sticks + 1A.

Moves : 9.12.2.2

I found this one excellent. There is a nice dead end at the beginning, and the solution is very elegant. It can be solved from the assembled or disassembled state.

Richard Evans' Rings = Sticks + 1B.

Moves : 10.9.3.3

There is a mistake with this one. The design presented on Ishino's page has 7 solutions starting from 2 moves, and none has 10 moves.

**3 sticks / 2 boards**

Richard Evans' Rings = Sticks - 1B.

Moves : 20.2.5.2

Not too bad.

**3 sticks / 3 boards**

Richard Evans' Rings = Sticks D.

Moves : 35.6.4.4

I didn't like this one very much. The solution is kind of boring. I prefer the Rings = Sticks - 1B, which features a similar solution without the boring parts.

Frank Worrel's Rings and Things - 3 stick 6.

Moves : 27.7.3.3.3

I forgot to try this one !

**3 sticks / 4 boards**

Alfons Eyckmans' Three in a Row (one colour).

Moves : 17.4.3.3.3.3

Not bad, but with 4 boards, it is possible to do better.

It has the advantage of having a unique solution without any colour.

Alfons Eyckmans' Three in a Row (two colours).

Moves : 38.7.7.4.3.4 without rotation

29.8.6.3.3 with rotations

A bit better. The solution uses the repetition of a simple sequence in order to reach 38 moves.

Richard Evans' Rings = Sticks + 1C.

Moves : 44.3.2.2.3.3

I didn't have the time to test this one. It seems quite close to the Rings = Sticks + 1D.

Richard Evans' Rings = Sticks + 1D.

Moves : 42.6.4.2.4

I found this one excellent. Difficult and interesting at the same time.

If I have the chance, I'll make one for myself.

**Beyond**

Alfons Eyckmans'Zig Zag 2

Moves : 102.12.9.7.4.3.3

I couldn't have solved this one if my life depended on it. I consider it as "inhuman". I couldn't even find the 5 first moves. Too much freedom from the beginning.

Stéphane Chomine's Harmonica

Moves : 96.9.9.2.7.5.2.2

Exactly the same experience as Zig-Zag 2 : way above my solving abilities.

Thanks to Frank, Alfons, Richard, Stéphane, and all other who share their designs on the web, and to Ishino for archiving them !