The Chess Variant Forum

It shouldn't be possible to move the King repeatedly... this can result in excessive draws.

I do like the idea.

Related: http://www.chessvariants.com/winning.dir/neutral-king.html

They are dealing with the same problem I mentioned above with some interesting rules. Two things I would note:
• This game would benefit from having an odd numbers board: 7x7, with the "grey" King in the center.

[Insert wish for posting boards here]

• I don't like the solutions they come up with for the King's movement, but can't immediately think of a better one. I do like the idea, however.

The way I would solve the issue with king move repeats is that after a king move the other player is not allowed to move the king back to the square the king came from.

This post became way more interesting than I expected.
Lets put a new twist on this variant.
Instead of the king being moved by the players, a number between 1-9 is generated. The number dictates how it will move.
1 - forwards
2 - forwards-right
3 - right
4 - backwards-right
5 - backwards
6 - backwards-left
7 - left
8 - forwards-left
9 -  no movement
This should make the game much more interesting. If the King gets a number which checks it, then a new number is generated.