Step-by-Step Solution

for Saturday 9th May Tricky

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

Single Candidate

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

Single Candidate

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

Single Candidate

For row 4, number 8 is only possible in cell (9,4)

Single Position

For column 2, Number 7 is only possible in cell (2,4)

Single Position

For row 1, number 6 is only possible in cell (9,1)

Single Position

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

Single Position

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

Single Position

For column 2, Number 1 is only possible in cell (2,3)

Single Position

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

Single Position

For row 3, number 2 is only possible in cell (9,3)

Single Position

For row 1, number 1 is only possible in cell (8,1)

Single Position

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

Single Position

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

Single Position

For column 8, Number 5 is only possible in cell (8,6)

Single Position

For column 8, Number 7 is only possible in cell (8,2)

Single Position

For box 2, candidates for 8 are all in row 1, so you can remove candidates from other blocks.

Candidate Lines

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

Single Position

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

Candidate Lines

For blocks 1 and 3, candidates for 9 are all in the same two rows (2 and 3)

Double Pairs

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

Multiple Lines

Naked Pair for 3 and 4, can remove these as candidates from other cells.

Naked Pairs

Naked Pair for 3 and 9, can remove these as candidates from other cells.

Naked Pairs

Number 4 is the only value possible in cell (2,7).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 5 is the only value possible in cell (2,8).

Single Candidate

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

Single Candidate

For row 9, number 8 is only possible in cell (1,9)

Single Position

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

Single Position

For row 9, number 6 is only possible in cell (7,9)

Single Position

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

Single Candidate

Number 6 is the only value possible in cell (1,7).

Single Candidate

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

Single Position

For column 9, Number 1 is only possible in cell (9,8)

Single Position

For row 8, number 4 is only possible in cell (5,8)

Single Position

Number 3 is the only value possible in cell (5,2).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 3 is the only value possible in cell (6,4).

Single Candidate

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

Single Candidate

Number 1 is the only value possible in cell (5,6).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 2 is the only value possible in cell (5,9).

Single Candidate

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

Single Candidate