The New Sudoku Players' Forum

[danlm]

Code: Select all

238   9    237   | 6     1   48  | 48   5    37
4     368  367   | 378   2   5   | 9    1    367
5     368  1     | 3789  37  489 | 248  246  2367
-----------------+---------------+---------------
269   1    269   | 4     5   3   | 7    269  8
2369  346  23469 | 1     8   7   | 5    269  269
7     5    8     | 2     9   6   | 1    3    4
-----------------+---------------+---------------
1     468  469   | 789   67  2   | 3    479  5
389   2    5     | 3789  4   89  | 6    79   1
369   7    3469  | 5     36  1   | 24   8    29


I would like to understand why, next step, is an 8 in r8c1 ?

[Ruud]

I would like to understand why, next step, is an 8 in r8c1

There is a naked pair {48} in row 1. This eliminates candidate 8 in r1c1, leaving r8c1 as the only candidate in column 1.

Ruud.

[QBasicMac]

There is a naked pair {48} in row 1. This eliminates candidate 8 in r1c1, leaving r8c1 as the only candidate in column 1.

Beautiful - Every character in your response was required and no other characters are required. Piece of art.

Mac