Practise: Remote Pair
Start with the marked cells that all contain the same two candidates. Can you trace the chain from one end to the other?
The prepared notes form one repeated pair chain. Each neighbouring pair shares a unit, so the two digits alternate; remove them only from notes that see both ends, and do not place a digit yet.
Example 1 of 4
Your turn first
Your turn first
Trace the marked 4/9 chain. Which prepared notes see both opposite ends and therefore cannot keep either digit?
Remember
A Remote Pair is an even-length chain of cells with the same two candidates. Adjacent cells see each other, so the digits alternate. The two ends are opposite, which removes both digits from any cell seeing both.
Put it to use
Where you will meet it
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