Step-by-Step Solution

for Wednesday 1st April Fiendish

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

Single Candidate

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

Single Candidate

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

Single Position

For row 6, number 4 is only possible in cell (3,6)

Single Position

For row 8, number 4 is only possible in cell (2,8)

Single Position

For row 7, number 4 is only possible in cell (6,7)

Single Position

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

Single Position

For box 4, candidates for 5 are all in column 1, so you can remove candidates from other blocks.

Candidate Lines

Naked Pair for 8 and 9, can remove these as candidates from other cells.

Naked Pairs

Naked Triple for 1, 7 and 9, can remove these as candidates from other cells.

Naked Triples

Candidates for 7 in boxes 2 and 3 force the candidates in box 1 to be in the remaining line.

Multiple Lines

For column 3, Number 7 is only possible in cell (3,9)

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Position

For row 5, number 3 is only possible in cell (9,5)

Single Position

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

Single Position

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

Single Position

For column 2, Number 1 is only possible in cell (2,7)

Single Position

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

Single Candidate

Number 1 is the only value possible in cell (4,8).

Single Candidate

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

Single Position

For row 4, number 3 is only possible in cell (6,4)

Single Position

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

Single Position

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

Single Position

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

Single Candidate

Number 8 is the only value possible in cell (1,7).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Position

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

Single Position

For row 3, number 7 is only possible in cell (8,3)

Single Position

For column 4, Number 7 is only possible in cell (4,4)

Single Position

Number 9 is the only value possible in cell (2,4).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate