Rosette positionThis is a subject that should be covered by an expert. Alas, there are no experts so I'll give it a shot. I've recently played a few games of Rosette and enjoyed it a lot. But I aspire to mediocrity in Go so don't lean on it.

On the right you see the final position in one of my games against an about equally strong opponent. A final position between expert players might look different, but not all that different. It is also quite similar to a Go position, so far as similar games played on different grids go.

The 'rosette'
If played according to the rules of Go however, the behaviour of the game is quite different because of the low atari treshold. In Go it is often possible to escape from an atari by extending, in Rosette that is often impossible, because extending adds at most one liberty. This doesn't make 'life' impossible, but it sure makes it harder to get by.

So Mark introduced the 'rosette', six like coloured stones around a small hexagon encircling a 'metaphysical eye'. You can see one in the white group bottom-left. That group has only one liberty but it lives because of the rosette.
The effect of the modification is that life is easier to come by, easier even than it is in Go, but not trivially easy. It provides a good backbone for a territorial game with capture, better I feel than it would be without the rosette lifeline.

In Rosette and edge consists of six points with 3 liberties and seven points with 2 liberties. It makes edgeplay an issue worth considering because it is very different from Go, and one of the issues where specific Go knowledge is of little help. You're on your own, have fun!

christian freeling