The Times - Fiendish No.148

All about puzzles in newspapers, magazines, and books

The Times - Fiendish No.148

Hi,

After 5 days of tube journeys, I gave up on No.148, and eventually solved it by photocopying what I had done, and taking two possible routes to find which one was correct. However, that just goes against every fibre in my being.... I want it to be logical!

Can someone please tell me how you would solve this using logic.

**8 2** 4**
*94 *71 35*
*1* *4* **6

4*1 **7 *23
*2* *3* ***
*8* 12* **4

549 *1* 68*
176 *8* *3*
832 **5 14*

I went through every row, column and 9x9 box about 50 times, and wrote down every single pencil mark, which was a mess. But still couldn't solve it.

I only started fairly recently, but am already hooked (seems a recurring theme), so looking for some tips on this one, as its the first one i've been stuck on. Nice one Wayne - you got me ;-)

Cheers,

Kevin.
tabber

Posts: 25
Joined: 31 May 2005

No. 148

You are by no means alone! The best thing you can do is look at the earlier thread on this puzzle, here in the Times forum. Good luck.
Not Carol V

Posts: 2
Joined: 20 May 2005

Ah, apologies. Didn't realise I had duped an earlier post, will check that out. I've got No.157 for the train home, so lets see how that goes
tabber

Posts: 25
Joined: 31 May 2005

Ok, thanks to Animator for the other thread (and my profound apologies for not checking that first, damn newbies....).

I now have a warm glow, knowing how it should be solved.

I had almost all the pieces in place, but didn't realise you could do the "Only two numbers in two cells" trick with rows and columns as well. Seems so obvious now, especially as I had already pulled this trick in box 3, for the 2 and 8. The bit I missed was the fact that Row 6 had a 6/9 pairing in two cells. I won't miss that one again. I guess they're not called fiendish for nothing.

Happy su-doku-ing everyone.

Kevin.
tabber

Posts: 25
Joined: 31 May 2005

Glad you're sorted. You must be a lot cleverer than me, though. I have to admit it took me another few days even after reading the tips.
Not Carol V

Posts: 2
Joined: 20 May 2005

The other topics that discuss this puzzles are:

http://forum.enjoysudoku.com/viewtopic.php?t=240 ==> this one starts from the same grid as the one in this topic;

http://forum.enjoysudoku.com/viewtopic.php?t=254 ==> this is another one, which hasn't reached the grid posted here (yet)

(Wayne, can you close/lock this thread?)
Animator

Posts: 469
Joined: 08 April 2005