Step-by-Step Solution

for Wednesday 5th November Diabolical

For row 3, number 9 is only possible in cell (6,3)

Single Position

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

Single Position

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

Single Position

For row 6, number 8 is only possible in cell (2,6)

Single Position

For column 4, Number 7 is only possible in cell (4,5)

Single Position

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

Single Position

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

Single Position

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

Single Position

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

Single Position

For row 5, number 9 is only possible in cell (2,5)

Single Position

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

Single Position

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

Single Position

For column 7, Number 3 is only possible in cell (7,5)

Single Position

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

Single Candidate

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

Single Candidate

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

Single Position

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

Single Position

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

Candidate Lines

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

Candidate Lines

For box 1, candidates for 6 are all in row 3, so you can remove candidates from other blocks.

Candidate Lines

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

Naked Pairs

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

Single Position

For box 2, candidates for 8 are all in column 4, so you can remove candidates from other blocks.

Candidate Lines

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

Candidate Lines

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

Naked Pairs

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

Naked Pairs

Naked Pair for 6 and 8, 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

Either candidate for cell (5,1) forces 3 into cell (3,9).

Forcing Chains

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

For row 7, number 8 is only possible in cell (6,7)

Single Position

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

Multiple Lines

Either candidate for cell (5,1) forces 8 into cell (4,3).

Forcing Chains

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

Multiple Lines

Either candidate for cell (9,1) forces 2 into cell (4,2).

Forcing Chains

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 4 is the only value possible in cell (6,5).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate