Step-by-Step Solution

for Friday 15th November Tricky

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

Single Position

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

Single Position

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

Single Position

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

Single Position

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

Single Position

For row 9, number 2 is only possible in cell (8,9)

Single Position

For row 1, number 9 is only possible in cell (7,1)

Single Position

For column 8, Number 3 is only possible in cell (8,8)

Single Position

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

Single Position

For row 5, number 1 is only possible in cell (9,5)

Single Position

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

Single Position

For row 3, number 1 is only possible in cell (7,3)

Single Position

For row 4, number 1 is only possible in cell (5,4)

Single Position

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

Single Position

For column 4, Number 7 is only possible in cell (4,3)

Single Position

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

Single Position

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

Single Position

For column 2, Number 3 is only possible in cell (2,4)

Single Position

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

Single Position

For column 3, Number 7 is only possible in cell (3,6)

Single Position

For column 3, Number 9 is only possible in cell (3,7)

Single Position

For box 7, Number 3 is only possible in cell (1,9)

Single Position

For box 4, candidates for 8 are all in column 1, so you can remove candidates from other blocks.

Candidate Lines

For box 3, candidates for 4 are all in row 2, 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

Hidden Pair for 3 and 8, can remove other candidates from these cells.

Hidden Pairs

For box 2, Number 6 is only possible in cell (6,3)

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 4 is the only value possible in cell (2,5).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 9 is the only value possible in cell (1,5).

Single Candidate

Number 8 is the only value possible in cell (1,6).

Single Candidate

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

Single Candidate

Number 4 is the only value possible in cell (8,2).

Single Candidate

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

Single Candidate

Number 8 is the only value possible in cell (9,1).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate