Step-by-Step Solution

for Wednesday 8th October Tricky

For box 6, Number 3 is only possible in cell (9,6)

Single Position

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

Single Position

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

Single Position

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

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

For row 3, number 6 is only possible in cell (7,3)

Single Position

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

Single Position

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

Single Position

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

Single Position

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

Single Position

For row 2, number 7 is only possible in cell (4,2)

Single Position

For row 9, number 4 is only possible in cell (2,9)

Single Position

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

Single Position

For row 3, number 7 is only possible in cell (8,3)

Single Position

For column 2, Number 3 is only possible in cell (2,7)

Single Position

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

Single Position

For box 1, candidates for 9 are all in row 2, so you can remove candidates from other blocks.

Candidate Lines

For column 7, Number 9 is only possible in cell (7,8)

Single Position

For box 5, candidates for 8 are all in column 6, so you can remove candidates from other blocks.

Candidate Lines

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

Candidate Lines

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Position

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

Candidate Lines

For blocks 4 and 7, candidates for 8 are all in the same two columns (1 and 3)

Double Pairs

Candidates for 5 in boxes 4 and 7 force the candidates in box 1 to be in the remaining line.

Multiple Lines

Naked Pair for 2 and 5, can remove these as candidates from other cells.

Naked Pairs

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 8 is the only value possible in cell (9,2).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 9 is the only value possible in cell (3,2).

Single Candidate

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

Single Candidate

Number 8 is the only value possible in cell (3,7).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate