Step-by-Step Solution

for Thursday 24th April Diabolical

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Position

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

Single Position

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

Single Position

For row 2, number 7 is only possible in cell (1,2)

Single Position

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

Single Position

For row 7, number 9 is only possible in cell (3,7)

Single Position

For column 1, Number 9 is only possible in cell (1,5)

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

For row 8, number 9 is only possible in cell (7,8)

Single Position

For row 4, number 3 is only possible in cell (8,4)

Single Position

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

Single Position

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

Single Candidate

Number 8 is the only value possible in cell (3,2).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Position

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

Single Position

Naked Pair for 1 and 8, can remove these as candidates from other cells.

Naked Pairs

Naked Pair for 3 and 6, can remove these as candidates from other cells.

Naked Pairs

Either candidate for cell (2,8) forces 2 into cell (3,9).

Forcing Chains

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

Single Candidate

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

Single Position

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

Single Candidate

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

Single Candidate

Number 5 is the only value possible in cell (8,3).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 1 is the only value possible in cell (8,5).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 1 is the only value possible in cell (5,8).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 1 is the only value possible in cell (4,6).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 8 is the only value possible in cell (6,9).

Single Candidate

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

Single Candidate