Step-by-Step Solution

for Sunday 6th April Fiendish

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

Single Candidate

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

Single Candidate

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

Single Position

For column 4, Number 6 is only possible in cell (4,1)

Single Position

For column 3, Number 1 is only possible in cell (3,5)

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 5 is the only value possible in cell (3,8).

Single Candidate

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

Single Position

For row 2, number 6 is only possible in cell (9,2)

Single Position

For row 8, number 6 is only possible in cell (1,8)

Single Position

For row 2, number 3 is only possible in cell (8,2)

Single Position

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

Single Position

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

Single Candidate

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

Single Position

For row 2, number 5 is only possible in cell (7,2)

Single Position

For row 7, number 5 is only possible in cell (6,7)

Single Position

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

Candidate Lines

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

Candidate Lines

For box 9, candidates for 4 are all in column 8, so you can remove candidates from other blocks.

Candidate Lines

Naked Pair for 2 and 7, can remove these as candidates from other cells.

Naked Pairs

For blocks 2 and 5, candidates for 7 are all in the same two columns (5 and 6)

Double Pairs

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

Multiple Lines

Naked Pair for 4 and 8, can remove these as candidates from other cells.

Naked Pairs

For column 8, Number 4 is only possible in cell (8,9)

Single Position

Number 8 is the only value possible in cell (1,9).

Single Candidate

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

Single Candidate

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

Single Candidate

Number 4 is the only value possible in cell (5,8).

Single Candidate

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

Single Candidate

Number 2 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 (7,8).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 9 is the only value possible in cell (8,1).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 2 is the only value possible in cell (7,9).

Single Candidate