Step-by-Step Solution
for Wednesday 2nd July Fiendish
Before
Step
After
For box 3, candidates for 6 are all in column 7, so you can remove candidates from other blocks.
For box 2, candidates for 8 are all in column 5, so you can remove candidates from other blocks.
For box 6, candidates for 8 are all in column 8, so you can remove candidates from other blocks.
For box 7, candidates for 5 are all in row 8, so you can remove candidates from other blocks.
Candidates for 1 in boxes 1 and 4 force the candidates in box 7 to be in the remaining line.
For guided hints and great solving assistance like automatic pencilmarks, try Astraware Sudoku Of The Day on your phone or tablet!