The New Sudoku Players' Forum

[SPARTAN-117]

This is out of the Times Fiendish book. It's #194, the 4th Super Fiendish one.
I've got as far as this.

1247 - 1247 - 9 / 5 - 6 - 27 / 3 - 18 - 248
125 - 125 - 6 / 8 - 4 - 3 / 7 - 159 - 29
8 - 23457 - 35 / 9 - 1 - 27 / 45 - 56 - 246

256 - 256 - 58 / 23 - 7 - 1 / 59 - 4 - 389
3 - 57 - 4 / 6 - 9 - 8 / 2 - 57 - 1
127 - 9 - 18 / 23 - 5 - 4 / 6 - 378 - 378

149 - 134 - 13 / 7 - 8 - 6 / 49 - 2 - 5
69 - 8 - 2 / 4 - 3 - 5 / 1 - 679 - 679
456 - 456 - 7 / 1 - 2 - 9 / 8 - 36 - 346

I reckon r1c8 and r6c3 (1/8) are the same.

I've spent hours looking at it, and have really hit a dead-end. I'm pretty sure the numbers I've filled in so far are right, as I started again. Any help please???

[keith]

Look for an X-wing in C3 and C7.

Keith

[SPARTAN-117]

Thanks for that.
Am quite new to the concept of x-wings etc. so that really helped, don't think I would have spotted it at all myself.

[TKiel]

There's also a 'swordfish' on 5' that creates a naked pair that one could use to solve the puzzle. (Edit: I didn't notice the x-wing, which Keith referred to, and so didn't see that they made the same exclusions.)

Tracy