Step-by-Step Solution

for Thursday 21st November Fiendish

For row 9, number 7 is only possible in cell (5,9)

Single Position

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

Single Position

For column 2, Number 3 is only possible in cell (2,5)

Single Position

For row 8, number 4 is only possible in cell (3,8)

Single Position

For box 3, Number 4 is only possible in cell (9,3)

Single Position

Number 2 is the only value possible in cell (9,6).

Single Candidate

For column 8, Number 2 is only possible in cell (8,1)

Single Position

For row 6, number 5 is only possible in cell (1,6)

Single Position

For box 7, Number 9 is only possible in cell (2,9)

Single Position

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

Candidate Lines

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

Candidate Lines

For box 1, candidates for 6 are all in column 2, so you can remove candidates from other blocks.

Candidate Lines

For box 9, candidates for 6 are all in column 8, so you can remove candidates from other blocks.

Candidate Lines

For box 7, candidates for 8 are all in column 3, so you can remove candidates from other blocks.

Candidate Lines

Hidden Pair for 6 and 8, can remove other candidates from these cells.

Hidden Pairs

Naked Pair for 6 and 8, can remove these as candidates from other cells.

Naked Pairs

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

Single Candidate

For row 5, number 4 is only possible in cell (1,5)

Single Position

Number 9 is the only value possible in cell (1,2).

Single Candidate

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

Single Candidate

Number 8 is the only value possible in cell (1,3).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 8 is the only value possible in cell (2,4).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 6 is the only value possible in cell (3,5).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 1 is the only value possible in cell (7,2).

Single Candidate

Number 9 is the only value possible in cell (7,3).

Single Candidate

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

Single Candidate

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

Single Candidate

Number 7 is the only value possible in cell (6,3).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 1 is the only value possible in cell (8,5).

Single Candidate

Number 7 is the only value possible in cell (9,5).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 1 is the only value possible in cell (5,8).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 9 is the only value possible in cell (8,7).

Single Candidate

Number 3 is the only value possible in cell (9,8).

Single Candidate

Number 5 is the only value possible in cell (9,7).

Single Candidate

Number 8 is the only value possible in cell (3,7).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate