Step-by-Step Solution

for Wednesday 16th April Fiendish

For column 6, Number 9 is only possible in cell (6,3)

Single Position

For column 6, Number 7 is only possible in cell (6,2)

Single Position

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

Single Position

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

Single Position

For row 8, number 7 is only possible in cell (8,8)

Single Position

For row 3, number 7 is only possible in cell (9,3)

Single Position

For column 9, Number 6 is only possible in cell (9,2)

Single Position

For column 9, Number 8 is only possible in cell (9,5)

Single Position

For box 9, candidates for 5 are all in row 7, so you can remove candidates from other blocks.

Candidate Lines

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

Candidate Lines

For box 2, candidates for 2 are all in column 5, so you can remove candidates from other blocks.

Candidate Lines

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

Candidate Lines

For blocks 1 and 7, candidates for 9 are all in the same two columns (2 and 3)

Double Pairs

For blocks 1 and 3, candidates for 8 are all in the same two rows (1 and 3)

Double Pairs

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

Single Candidate

For blocks 3 and 9, candidates for 3 are all in the same two columns (7 and 8)

Double Pairs

Candidates for 3 in boxes 5 and 6 force the candidates in box 4 to be in the remaining line.

Multiple Lines

Naked Pair for 1 and 3, can remove these as candidates from other cells.

Naked Pairs

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

Single Candidate

For column 4, Number 3 is only possible in cell (4,8)

Single Position

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

Single Position

Naked Pair for 2 and 3, can remove these as candidates from other cells.

Naked Pairs

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

Single Position

For row 5, number 1 is only possible in cell (8,5)

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 5 is the only value possible in cell (7,1).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 3 is the only value possible in cell (7,2).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 9 is the only value possible in cell (3,1).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate