Step-by-Step Solution
for Monday 7th July Tricky
Before
Step
After
For box 6, candidates for 8 are all in column 7, so you can remove candidates from other blocks.
For box 7, candidates for 3 are all in column 3, so you can remove candidates from other blocks.
For box 6, candidates for 1 are all in column 7, so you can remove candidates from other blocks.
For box 3, candidates for 2 are all in column 7, so you can remove candidates from other blocks.
Candidates for 2 in boxes 4 and 7 force the candidates in box 1 to be in the remaining line.
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