Step-by-Step Solution

for Saturday 14th March Diabolical

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

Single Position

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

Single Candidate

Number 5 is the only value possible in cell (4,8).

Single Candidate

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

Single Candidate

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

Single Position

For column 9, Number 5 is only possible in cell (9,3)

Single Position

For row 1, number 2 is only possible in cell (3,1)

Single Position

For column 8, Number 5 is only possible in cell (8,7)

Single Position

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

Single Position

For row 5, number 2 is only possible in cell (1,5)

Single Position

For row 4, number 2 is only possible in cell (8,4)

Single Position

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

Single Position

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

Single Position

For row 3, number 1 is only possible in cell (2,3)

Single Position

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

Single Position

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

Single Position

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

Single Position

For column 2, Number 9 is only possible in cell (2,4)

Single Position

For column 3, Number 4 is only possible in cell (3,5)

Single Position

For column 9, Number 4 is only possible in cell (9,6)

Single Position

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

Candidate Lines

For box 8, candidates for 3 are all in column 5, so you can remove candidates from other blocks.

Candidate Lines

Candidates for 8 in boxes 1 and 2 force the candidates in box 3 to be in the remaining line.

Multiple Lines

Hidden Pair for 1 and 7, can remove other candidates from these cells.

Hidden Pairs

Either candidate for cell (6,2) forces 6 into cell (9,2).

Forcing Chains

For row 1, number 6 is only possible in cell (4,1)

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 9 is the only value possible in cell (5,6).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 4 is the only value possible in cell (5,8).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate