Go 11x11

How about 11x11 variant of Go (plain, not toroidal)? 11x11 has 50% more cells than 9x9 so it should be considerably deeper while at the same time not excessively long. For me 13x13 is already quite a heavy game. 11x11 seems to strike a perfect balance of depth vs. time of play.

I wonder what your opinions are.

I'd also love 7x7 (blood!) ;-)

I acutally only like 19x19, of course go can be played at any board size, but 9x9, 13x13 and 19x19 are far more traditional

Carroll, why this mysterious primality condition?

What fuseki are popular on 505,431 × 505,431 these days? (LINK)

A side note: As far as I can tell, the terms from 44,169 onwards in my link are only probable primes.

...from N = 44,169 onwards...

That's hardly the only flaw in the argument. :p :p :p

"If you could arrange any of those in a rectangle, that would be ugly but this is not possible because it is prime, so the beauty is preserved. "

I am not sure if I can follow this. What do you want to arrange in a rectangle and how does it relate to fighting for territory on 11x11?

My first go teacher let us play on 11x11, with the (3,3) points as handicap.

He probably considered handicap stones on a 9x9 board against him as too hard ;)

I don't get the role of prime numbers for "eligible" Goban sizes, BTW.

I can almost sense what you're saying, but my math brain is too old and shriveled to follow the logic of it.

Can you explain, please, in simpler terms? What do you mean by rectangle? Why is it not possible on certain boards?

I would like 7x13 and 5x19

I would like a 7x11 board, but with the points rearranged a bit: Link

I think it would be fun to try this out. While Toroidal Go makes the board most regular, with full symmetry between the points, it would be interesting to go in the opposite direction as well and make the board more irregular.

BTW: I wonder why Richard does not tidy things up and make the board size a game parameter, as it is already in Dots&Boxes and Havannah. And why is Toroidal Go 11x11 a variant of Go19?

BTW2: at www.dragongoserver.net Go can be played on all sizes from 5x5 to 25x25. But there are no tournaments.