Step-by-Step Solution

for Wednesday 28th May Fiendish

For column 6, Number 8 is only possible in cell (6,4)

Single Position

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

Single Position

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

Single Position

For column 8, Number 2 is only possible in cell (8,7)

Single Position

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

Single Position

For row 3, number 5 is only possible in cell (7,3)

Single Position

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

Single Position

For row 1, number 5 is only possible in cell (4,1)

Single Position

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

Single Position

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

Single Position

For box 3, Number 9 is only possible in cell (9,2)

Single Position

For row 4, number 7 is only possible in cell (5,4)

Single Position

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

Candidate Lines

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

Single Candidate

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

Single Candidate

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

Single Position

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

Single Position

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

Multiple Lines

Naked Pair for 3 and 9, can remove these as candidates from other cells.

Naked Pairs

Naked Pair for 4 and 6, can remove these as candidates from other cells.

Naked Pairs

X-Wing in rows for 4.

X-Wings

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

Single Position

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

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

For row 1, number 8 is only possible in cell (2,1)

Single Position

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

Single Position

For row 6, number 2 is only possible in cell (5,6)

Single Position

For row 6, number 9 is only possible in cell (4,6)

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 9 is the only value possible in cell (1,5).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 7 is the only value possible in cell (8,9).

Single Candidate

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

Single Candidate