Please help me with XY-chain link
Posted: Tue Dec 05, 2006 9:02 pm
Hello all. I'm new to Sudoku and I'm trying to learn the XY-chain link. I am having a difficult time to understand this particular technique. For example, I'm trying to solve this puzzle using Sudocue. The "Hint" suggested that XY-chain link for the digit 4. But the start and end point belong to the same cell! That means the digit 4 must belong to that cell.
Does it have any restrictions on what 2 digit cells I can use to link? In the example below, I'm linking the cell R6C5 twice. I'm quite confused...
This screen print shows the Puzzle I'm working on.
Thanks in advance for all the helpful tips!
Does it have any restrictions on what 2 digit cells I can use to link? In the example below, I'm linking the cell R6C5 twice. I'm quite confused...
This screen print shows the Puzzle I'm working on.
Thanks in advance for all the helpful tips!