Step-by-Step Solution

for Saturday 10th January Fiendish

For row 3, number 5 is only possible in cell (7,3)

Single Position

For column 8, Number 3 is only possible in cell (8,5)

Single Position

For column 1, Number 8 is only possible in cell (1,6)

Single Position

Number 9 is the only value possible in cell (8,6).

Single Candidate

For box 6, candidates for 8 are all in row 4, so you can remove candidates from other blocks.

Candidate Lines

For box 7, candidates for 4 are all in column 3, so you can remove candidates from other blocks.

Candidate Lines

Candidates for 7 in boxes 1 and 4 force the candidates in box 7 to be in the remaining line.

Multiple Lines

Hidden Pair for 1 and 8, can remove other candidates from these cells.

Hidden Pairs

Naked Triple for 2, 4 and 6, can remove these as candidates from other cells.

Naked Triples

Number 7 is the only value possible in cell (4,6).

Single Candidate

Number 8 is the only value possible in cell (5,5).

Single Candidate

Number 1 is the only value possible in cell (5,2).

Single Candidate

Number 8 is the only value possible in cell (6,1).

Single Candidate

Number 2 is the only value possible in cell (5,4).

Single Candidate

Number 9 is the only value possible in cell (6,5).

Single Candidate

Number 5 is the only value possible in cell (4,5).

Single Candidate

Number 3 is the only value possible in cell (4,4).

Single Candidate

Number 7 is the only value possible in cell (2,5).

Single Candidate

Number 4 is the only value possible in cell (5,6).

Single Candidate

Number 1 is the only value possible in cell (7,6).

Single Candidate

Number 6 is the only value possible in cell (6,6).

Single Candidate

Number 1 is the only value possible in cell (6,4).

Single Candidate

Number 2 is the only value possible in cell (3,6).

Single Candidate

Number 7 is the only value possible in cell (5,8).

Single Candidate

Number 2 is the only value possible in cell (7,8).

Single Candidate

Number 6 is the only value possible in cell (8,7).

Single Candidate

Number 2 is the only value possible in cell (8,1).

Single Candidate

Number 4 is the only value possible in cell (3,7).

Single Candidate

Number 2 is the only value possible in cell (6,7).

Single Candidate

Number 7 is the only value possible in cell (1,7).

Single Candidate

Number 9 is the only value possible in cell (9,7).

Single Candidate

Number 6 is the only value possible in cell (9,1).

Single Candidate

Number 4 is the only value possible in cell (4,1).

Single Candidate

Number 1 is the only value possible in cell (2,1).

Single Candidate

Number 9 is the only value possible in cell (7,1).

Single Candidate

Number 7 is the only value possible in cell (3,1).

Single Candidate

Number 3 is the only value possible in cell (9,3).

Single Candidate

Number 8 is the only value possible in cell (9,2).

Single Candidate

Number 4 is the only value possible in cell (7,2).

Single Candidate

Number 7 is the only value possible in cell (9,4).

Single Candidate

Number 8 is the only value possible in cell (7,4).

Single Candidate

Number 5 is the only value possible in cell (8,8).

Single Candidate

Number 1 is the only value possible in cell (9,8).

Single Candidate

Number 9 is the only value possible in cell (4,9).

Single Candidate

Number 3 is the only value possible in cell (6,9).

Single Candidate

Number 4 is the only value possible in cell (6,8).

Single Candidate

Number 5 is the only value possible in cell (3,9).

Single Candidate

Number 6 is the only value possible in cell (3,4).

Single Candidate

Number 5 is the only value possible in cell (2,4).

Single Candidate

Number 3 is the only value possible in cell (3,8).

Single Candidate

Number 9 is the only value possible in cell (3,2).

Single Candidate

Number 6 is the only value possible in cell (1,8).

Single Candidate

Number 2 is the only value possible in cell (1,3).

Single Candidate

Number 3 is the only value possible in cell (1,2).

Single Candidate

Number 6 is the only value possible in cell (2,2).

Single Candidate

Number 2 is the only value possible in cell (4,2).

Single Candidate

Number 4 is the only value possible in cell (2,3).

Single Candidate

Number 6 is the only value possible in cell (4,3).

Single Candidate

Number 1 is the only value possible in cell (1,9).

Single Candidate

Number 2 is the only value possible in cell (2,9).

Single Candidate

Number 7 is the only value possible in cell (7,9).

Single Candidate

Number 8 is the only value possible in cell (8,9).

Single Candidate