The New Sudoku Players' Forum

[txlef]

[EDIT: No, I didn't make an error, this is where I am stuck.]

Stuck. Need some advice on how to proceed without t&e please:

*5* **1 6**
3*6 **2 ***
**9 3** 2*4

**4 53* 182
*** 8*4 ***
8*5 12* 4**

6*1 **5 3**
*** 6** 9*1
**7 21* *46

Still pretty new at this, and I just found this forum last night!

Thanks.

[txlef]

Made some progress using x-y wing. Then in desparation, plugged this in to Simple Sudoku. SS says no hints are available!

[emm]

OK txlef, I hope that is your name cos I've been trialling the 3 green candles with guinness technique (from another thread) and that name looks pretty strange, so hope it's not me. There's an Xwing of 4's in rows 2, 7 and 8 that will enable you to eliminate the 4's in the rest of the grid - hope this helpful, and if not dont worry cos everyone will soon be rushing in with their suggestions in fact I can hardly believe I beat zebedee off the gun but then the world is round, eh wot?

[emm]

Correction - where did that grid come from!! I'm sure that wasn't there when I posted. Well anyway, it's not an Xwing it's a swordfish - apologies for that but one piscine creature looks decidedly like another when one's a little bit piscined oneself and luckily I don't feel the need to edit my every mistake off the face of the planet like some people I know! (Mostly cos there's a lot of them and it would take too long). Also sorry zebedee, no offence, mate, everybody has to sleep sometime, eh?

[txlef]

Used coloring to get this far:



Now I think I'm stumped.

[Jeff]

......it's not an Xwing it's a swordfish ......

Where is the swordfish, em?

Txlef, where did the 7 in r5c7 come from? It wasn't in the original grid.

[txlef]

I got it by x-y wing eliminating the 7 from r5c9, creating a single at r5c7.

[Jeff]

I got it by x-y wing eliminating the 7 from r5c9, creating a single at r5c7.

How about the other 7s in box 6?

[stuartn]

The answer lies in a chain centred on R9C1 - if you just make it a 9 the whole thing falls apart with no fishy stuff..... but finding it........hmmmm


stuartn

[emm]

Where is the swordfish, em?

Funny how a red herring can look like a swordfish in the heat of the moment, eh, Jeff? and having commended the practice of self-castigation in full view of the masses, I have to concede that that's enough public humiliation for now - it's going to be private floggings only (or by appointment) until further notice.

[Jeff]

I got it by x-y wing eliminating the 7 from r5c9, creating a single at r5c7.

How about the other 7s in box 6?

With cell r5c7 remains undetermined, I could only remove 6 more candidates; nevertheless still unable to solve it.