I read on anoter site about solving methods, and I'm not getting it. They mention that:

The 4 in c1r1 means that a 4 must be in c2 of box 7.

Why is that 4 reserved to box 7? I'm not seeing that.

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I'm a newb. There, I said it.

I read on anoter site about solving methods, and I'm not getting it. They mention that:

Why is that 4 reserved to box 7? I'm not seeing that.

I read on anoter site about solving methods, and I'm not getting it. They mention that:

The 4 in c1r1 means that a 4 must be in c2 of box 7.

Why is that 4 reserved to box 7? I'm not seeing that.

- iRob
**Posts:**10**Joined:**21 October 2005

I understand their language, but not their justification. For instance, I see that the 4 in c1r1 eliminates all of column 1 for a 4 in boxes 4 and 7.

But why is column 3 of box 7 not a possible candidate for the 4? Where's the restriction there?

...oh wait, I think I just answered my own question. It's circumstantial, isn't it? Only because there's only one available column for the 4s in box 7, and one remaining in box 4 that forces the 4 into c3r5.

Got it, thanks.

But why is column 3 of box 7 not a possible candidate for the 4? Where's the restriction there?

...oh wait, I think I just answered my own question. It's circumstantial, isn't it? Only because there's only one available column for the 4s in box 7, and one remaining in box 4 that forces the 4 into c3r5.

Got it, thanks.

- iRob
**Posts:**10**Joined:**21 October 2005

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