Step-by-Step Solution

for Friday 6th June Fiendish

For row 1, number 3 is only possible in cell (7,1)

Single Position

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

Single Candidate

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

Single Candidate

For row 9, number 3 is only possible in cell (4,9)

Single Position

For row 7, number 3 is only possible in cell (1,7)

Single Position

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

Single Position

For row 1, number 7 is only possible in cell (6,1)

Single Position

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

Single Position

Candidates for 5 in boxes 2 and 3 force the candidates in box 1 to be in the remaining line.

Multiple Lines

Candidates for 9 in boxes 2 and 3 force the candidates in box 1 to be in the remaining line.

Multiple Lines

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

Naked Pairs

For row 3, number 1 is only possible in cell (8,3)

Single Position

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

Candidate Lines

Hidden Pair for 1 and 6, can remove other candidates from these cells.

Hidden Pairs

For box 7, candidates for 9 are all in row 8, so you can remove candidates from other blocks.

Candidate Lines

Naked Pair for 7 and 8, can remove these as candidates from other cells.

Naked Pairs

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

Single Position

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

Multiple Lines

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

Single Candidate

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

Single Candidate

Number 1 is the only value possible in cell (4,5).

Single Candidate

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

Single Candidate

Number 1 is the only value possible in cell (9,4).

Single Candidate

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

Single Candidate

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

Single Candidate

Number 1 is the only value possible in cell (3,6).

Single Candidate

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

Single Candidate

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

Single Candidate

For row 7, number 4 is only possible in cell (9,7)

Single Position

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

Single Position

For row 8, number 4 is only possible in cell (5,8)

Single Position

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

Single Position

Number 4 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 (1,6).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 4 is the only value possible in cell (2,6).

Single Candidate

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

Single Candidate

Number 9 is the only value possible in cell (5,4).

Single Candidate

Number 6 is the only value possible in cell (5,2).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 2 is the only value possible in cell (5,9).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 8 is the only value possible in cell (4,3).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate