Step-by-Step Solution

for Thursday 14th May Tricky

For row 2, number 4 is only possible in cell (5,2)

Single Position

For row 5, number 4 is only possible in cell (9,5)

Single Position

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

Single Position

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

Single Position

For box 8, Number 7 is only possible in cell (6,9)

Single Position

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

Single Position

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

Single Position

For column 6, Number 3 is only possible in cell (6,5)

Single Position

For column 5, Number 5 is only possible in cell (5,6)

Single Position

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

Single Position

For column 5, Number 9 is only possible in cell (5,4)

Single Position

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

Single Candidate

For row 6, number 1 is only possible in cell (2,6)

Single Position

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

Single Position

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

Single Position

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

Single Position

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

Single Position

For row 7, number 5 is only possible in cell (3,7)

Single Position

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

Single Position

For column 5, Number 2 is only possible in cell (5,8)

Single Position

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

Single Position

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

Candidate Lines

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

Candidate Lines

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

Multiple Lines

Naked Pair for 6 and 9, can remove these as candidates from other cells.

Naked Pairs

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

Single Candidate

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

Single Candidate

Number 5 is the only value possible in cell (2,1).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 7 is the only value possible in cell (9,3).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 7 is the only value possible in cell (3,4).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 9 is the only value possible in cell (7,8).

Single Candidate

Number 6 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 6 is the only value possible in cell (1,2).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate