Just solved my second puzzle. I like this game. Like most of timns's games, it takes me a couple tries to figure out how to play it, but they are exceedingly clever.
Timns, I'm assuming that you aren't inventing this actually game idea (i mean the nature of the clues, the size, the summing, the algorithm).. Where is it from?
Thank you for the kind comments, as ever! Like most of my software, documentation and help is a bit light on the ground
This idea is lifted from a really old puzzle book I have where they're called "magic squares".
They sure do lend themselves to being ported to a computer version of course. Once I figured out how to remove every piece of information except the bare minimum that is!
But the algorithm IS mine: it was quite pleasing to figure out and code - about 600 lines of java, which could be generalised easily enough to provide an "engine" for many variants.
I have no doubt at all that there are other versions of this puzzle to play on the PC, although I have not seen one.
I've made a note of your comments, and I'll do an update accordingly