Step-by-Step Solution

for Sunday 21st June Fiendish

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

Single Candidate

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

Single Position

For row 1, number 8 is only possible in cell (4,1)

Single Position

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

Single Candidate

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

Single Position

For column 2, Number 8 is only possible in cell (2,9)

Single Position

For column 8, Number 1 is only possible in cell (8,2)

Single Position

For column 4, Number 6 is only possible in cell (4,5)

Single Position

For box 1, candidates for 2 are all in column 3, so you can remove candidates from other blocks.

Candidate Lines

For box 9, candidates for 2 are all in column 7, so you can remove candidates from other blocks.

Candidate Lines

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

Candidate Lines

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

Single Candidate

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

Single Candidate

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

Single Position

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

Double Pairs

Candidates for 9 in boxes 2 and 5 force the candidates in box 8 to be in the remaining line.

Multiple Lines

Hidden Pair for 2 and 6, can remove other candidates from these cells.

Hidden Pairs

For row 9, number 3 is only possible in cell (8,9)

Single Position

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

Single Candidate

For row 2, number 4 is only possible in cell (3,2)

Single Position

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

Single Candidate

Number 2 is the only value possible in cell (3,1).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 5 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 9 is the only value possible in cell (7,2).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 3 is the only value possible in cell (9,6).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 9 is the only value possible in cell (4,8).

Single Candidate

Number 2 is the only value possible in cell (7,8).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate