StrmCkr wrote:
Case Study 1:
A| 5 3479 479 |
B| 379 6 2 |
C| 1 3489 489 |
in this specific quad i have noticed that all unsolved squares are connected by the number 9.
this number complicates the normally exposed strong\weak links of all the cells.
I start by removing that number, and can then see the underling chain of events and hidden links between the cells.
A| 5 347 47 |
B| 37 6 2 |
C| 1 348 48
this exposes several events.
In cells A2, A3 a (47) pair are hidden pairs.
C2, C3 are hidden pairs (48)
and B1 is a singled 3 thanks to removal by the hidden pair.
I'm already lost at this point and did not procede further. In what sense do you mean that A2 and A3 form a hidden pair? In the box, this makes no sense as 4 and 7 appear elsewhere. In the row it does not make sense either as looking at the entire row again yields additional 4's and a 7. For the same reasons, C2 and C3 are not hidden pairs. Are you using an alternate definition of hidden pair?
Of course, all of this assumes that there is some logical reason for removing the 9 from every cell in the box and expecting to obtain results. Please clarify.