Step-by-Step Solution

for Saturday 5th July Fiendish

Number 5 is the only value possible in cell (9,1).

Single Candidate

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

Single Candidate

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

Single Candidate

Number 4 is the only value possible in cell (2,9).

Single Candidate

For row 1, number 9 is only possible in cell (5,1)

Single Position

For row 3, number 9 is only possible in cell (2,3)

Single Position

For column 7, Number 9 is only possible in cell (7,8)

Single Position

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

Single Position

Number 2 is the only value possible in cell (4,1).

Single Candidate

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

Single Candidate

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

Single Candidate

For column 3, Number 5 is only possible in cell (3,6)

Single Position

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

Single Candidate

For column 4, Number 5 is only possible in cell (4,2)

Single Position

For box 7, Number 7 is only possible in cell (1,7)

Single Position

For row 5, number 2 is only possible in cell (8,5)

Single Position

For column 2, Number 2 is only possible in cell (2,2)

Single Position

For row 3, number 2 is only possible in cell (7,3)

Single Position

For box 7, candidates for 1 are all in column 3, so you can remove candidates from other blocks.

Candidate Lines

For row 3, number 1 is only possible in cell (5,3)

Single Position

For row 2, number 1 is only possible in cell (1,2)

Single Position

Hidden Pair for 1 and 9, can remove other candidates from these cells.

Hidden Pairs

Hidden Pair for 3 and 4, can remove other candidates from these cells.

Hidden Pairs

Naked Pair for 3 and 4, can remove these as candidates from other cells.

Naked Pairs

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

Single Candidate

Candidates for 3 in boxes 2 and 8 force the candidates in box 5 to be in the remaining line.

Multiple Lines

Number 7 is the only value possible in cell (5,6).

Single Candidate

Number 1 is the only value possible in cell (2,6).

Single Candidate

Number 8 is the only value possible in cell (2,5).

Single Candidate

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

Single Candidate

Number 3 is the only value possible in cell (4,5).

Single Candidate

Number 6 is the only value possible in cell (1,5).

Single Candidate

Number 3 is the only value possible in cell (1,4).

Single Candidate

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

Single Candidate

Number 1 is the only value possible in cell (6,5).

Single Candidate

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

Single Candidate

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

Single Candidate

Number 4 is the only value possible in cell (9,8).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 5 is the only value possible in cell (7,4).

Single Candidate

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

Single Candidate

Number 2 is the only value possible in cell (3,8).

Single Candidate

Number 6 is the only value possible in cell (5,8).

Single Candidate

Number 3 is the only value possible in cell (6,8).

Single Candidate

Number 8 is the only value possible in cell (6,2).

Single Candidate

Number 3 is the only value possible in cell (5,2).

Single Candidate

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

Single Candidate

Number 8 is the only value possible in cell (5,9).

Single Candidate

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

Single Candidate

Number 6 is the only value possible in cell (7,9).

Single Candidate