Practise: Almost Locked Sets (ALS-XZ)
Find two separate marked Almost Locked Sets. Which outside 6-note sees every possible 6 position in both sets?
This direct drill begins on two verified Almost Locked Sets. Identify each set, check their restricted shared candidate, then remove only the outside note that sees every matching position.
Example 1 of 4
Your turn first
Your turn first
For 9/6, find the two marked Almost Locked Sets. Which prepared outside 6-note sees every possible 6 position in both?
Remember
Two disjoint ALS share a restricted candidate that appears once in each set and whose two cells see each other. An outside shared candidate can be removed only when it sees every one of its possible positions in both sets.
Put it to use
Where you will meet it
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