Creating game remake, please help with rules

[Gargoyle]

Hi. Can anyone help me?

I'm creating a game in Java.
I only remember an idea, not original title. Also I don't know some rules aspects.
I remember its clone on ZX, it called "Open It!"

Description:
You're playing with a computer. There's a field 8x8 (or any other square size), each cell has score points (can be negative). You can move only vertically (horizontally), computer can move horizontally (vertically), opening cells. The aim is to get more score after there's no possible moves.

I don't know how the field should be formed-- randomly or by some rules?

Thanks in advance.
If you have additional suggestion please post them also.

[Guest]

Here, take a look at Murmel, it is sort of like what you are describing:

http://pricklystick.com/mur105b.zip

[Gargoyle]

Here, take a look at Murmel, it is sort of like what you are describing:

http://pricklystick.com/mur105b.zip

Yeah, something like that.

But it's not clear to me how to generate field. Should I use random numbers, or, for example, 50% cells negative and 50% positive etc.?