Step-by-Step Solution

for Thursday 20th August Fiendish

For row 8, number 4 is only possible in cell (6,8)

Single Position

For box 8, Number 8 is only possible in cell (5,7)

Single Position

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

Single Position

For row 7, number 2 is only possible in cell (4,7)

Single Position

For row 2, number 5 is only possible in cell (4,2)

Single Position

For row 8, number 5 is only possible in cell (3,8)

Single Position

For row 8, number 8 is only possible in cell (1,8)

Single Position

For column 3, Number 8 is only possible in cell (3,1)

Single Position

For column 9, Number 8 is only possible in cell (9,2)

Single Position

For row 1, number 2 is only possible in cell (9,1)

Single Position

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

Single Position

For box 2, candidates for 7 are all in row 3, so you can remove candidates from other blocks.

Candidate Lines

For box 8, candidates for 3 are all in row 9, so you can remove candidates from other blocks.

Candidate Lines

For box 4, candidates for 9 are all in column 3, so you can remove candidates from other blocks.

Candidate Lines

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

Hidden Pairs

For column 6, Number 7 is only possible in cell (6,3)

Single Position

For box 6, candidates for 3 are all in row 5, so you can remove candidates from other blocks.

Candidate Lines

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

Candidate Lines

Candidates for 6 in boxes 5 and 6 force the candidates in box 4 to be in the remaining line.

Multiple Lines

Hidden Pair for 1 and 7, can remove other candidates from these cells.

Hidden Pairs

For row 9, number 6 is only possible in cell (1,9)

Single Position

For row 8, number 6 is only possible in cell (9,8)

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Position

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

Single Position

For row 7, number 9 is only possible in cell (2,7)

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 3 is the only value possible in cell (5,1).

Single Candidate

Number 4 is the only value possible in cell (7,1).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 3 is the only value possible in cell (7,5).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 9 is the only value possible in cell (4,6).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 3 is the only value possible in cell (4,9).

Single Candidate

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

Single Candidate

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

Single Candidate