The New Sudoku Players' Forum

[podge]

killer n0. 188 in London Times 29 April. Any ideas?

[lunababy_moonchild]

Posting the original puzzle and then where you got up to would give a clearer idea of what you mean.

Luna

[Ruud]

Here is the puzzle:

Code: Select all

.-----.--.--------.--.-----.
|11   |9 |23      |9 |21   |
:--.--:  '--.--.  |  |     |
|23|11|     |7 |  |  |     |
|  |  |-----:  |--'--+-----:
|  |  |20   |  |12   |11   |
|  '--:     |--'--.--'-----:
|     |     |16   |18      |
:-----+-----+--.  |-----.  |
|11   |30   |10|  |24   |  |
|  .--:  .--:  |  |  .--'--:
|  |19|  |8 |  |  |  |22   |
|  |  |  |  |--'--:  |     |
|  |  |  |  |8    |  |     |
:--:  '--+--'--.  |--'--.--:
|10|     |17   |  |23   |3 |
|  |-----'--.--'--:     |  |
|  |16      |13   |     |  |
'--'--------'-----'-----'--'

and in PS format:

Code: Select all

3x3::k:2816:2816:2306:5891:5891:5891:2310:5383:5383:5897:2826:
2306:2306:1805:5891:2310:5383:5383:5897:2826:5140:5140:1805:
3095:3095:2841:2841:5897:5897:5140:5140:4127:4127:4641:4641:
4641:2852:2852:7718:7718:2600:4127:6186:6186:4641:2852:4910:
7718:2096:2600:4127:6186:5684:5684:2852:4910:7718:2096:2106:
2106:6186:5684:5684:2623:4910:4910:4418:4418:2106:5957:5957:
839:2623:4169:4169:4169:3404:3404:5957:5957:839:

When you get stuck (after 2 placements), a '45' test will reveal that R8C236 sum up to 8. One of these 3 cells will contain a digit 1, so it cannot go into R8C9. This will leave 2 in R8C9, which in turn rules out 125 as configuration for the 3 cells. A {134} triple is the result.

R8C1 can now only contain {67}, so R9C1 must be {34}. Naked triple in N7.

A '45' test on C12 will show that R9C2 = R8C3 + 5. R9C2={89}. R8C3={34} Naked pair {34} in N7. R8C2=1.

It may be a little easier from there.

Ruud.

[udosuk]

This is exactly the same puzzle posted on Friday 21 April, 2006, labelled "No. 181", which the website adminstrator screwed up the links and didn't provide the solutions for the puzzles on that particular day... See my post for details...