Step-by-Step Solution

for Thursday 2nd January Tricky

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

Single Candidate

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

Single Position

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

Single Position

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

Single Position

For column 5, Number 4 is only possible in cell (5,2)

Single Position

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

Single Position

For row 9, number 5 is only possible in cell (6,9)

Single Position

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

Single Position

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

Single Position

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

Single Position

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

Single Position

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

Candidate Lines

For box 2, candidates for 5 are all in column 4, so you can remove candidates from other blocks.

Candidate Lines

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

Candidate Lines

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

Candidate Lines

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

Candidate Lines

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

Multiple Lines

For blocks 1 and 7, candidates for 8 are all in the same two columns (1 and 2)

Double Pairs

Naked Pair for 1 and 3, can remove these as candidates from other cells.

Naked Pairs

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

Single Candidate

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

Single Position

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

Single Position

For column 8, Number 3 is only possible in cell (8,5)

Single Position

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

Single Position

For row 9, number 6 is only possible in cell (8,9)

Single Position

For row 4, number 3 is only possible in cell (5,4)

Single Position

Number 9 is the only value possible in cell (5,8).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 4 is the only value possible in cell (2,1).

Single Candidate

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

Single Candidate

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

Single Candidate

Number 1 is the only value possible in cell (8,3).

Single Candidate

Number 4 is the only value possible in cell (8,6).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 2 is the only value possible in cell (6,5).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 7 is the only value possible in cell (2,5).

Single Candidate

Number 4 is the only value possible in cell (3,5).

Single Candidate

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

Single Candidate

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

Single Candidate

Number 2 is the only value possible in cell (3,6).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 2 is the only value possible in cell (7,9).

Single Candidate