Step-by-Step Solution

for Tuesday 3rd June Fiendish

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

Single Position

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

Single Position

For box 8, Number 4 is only possible in cell (5,8)

Single Position

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

Single Position

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

Single Position

For row 6, number 8 is only possible in cell (5,6)

Single Position

For column 5, Number 9 is only possible in cell (5,4)

Single Position

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

Candidate Lines

For box 3, candidates for 5 are all in row 2, so you can remove candidates from other blocks.

Candidate Lines

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

Candidate Lines

Naked Pair for 4 and 7, can remove these as candidates from other cells.

Naked Pairs

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

Single Candidate

For row 8, number 7 is only possible in cell (1,8)

Single Position

For row 9, number 3 is only possible in cell (1,9)

Single Position

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

Double Pairs

Hidden Pair for 1 and 5, can remove other candidates from these cells.

Hidden Pairs

For box 2, candidates for 7 are all in column 5, so you can remove candidates from other blocks.

Candidate Lines

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

Single Candidate

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

Single Position

For box 3, Number 2 is only possible in cell (7,3)

Single Position

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

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 1 is the only value possible in cell (3,4).

Single Candidate

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

Single Candidate

For row 4, number 2 is only possible in cell (6,4)

Single Position

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

Single Candidate

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

Single Position

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

Single Position

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

Multiple Lines

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 5 is the only value possible in cell (7,4).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate