Step-by-Step Solution

for Tuesday 17th December Medium

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

Single Position

For row 1, number 8 is only possible in cell (7,1)

Single Position

For row 6, number 8 is only possible in cell (3,6)

Single Position

For row 8, number 1 is only possible in cell (6,8)

Single Position

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

Single Position

For row 3, number 6 is only possible in cell (8,3)

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

For column 6, Number 9 is only possible in cell (6,1)

Single Position

For row 8, number 2 is only possible in cell (3,8)

Single Position

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

Single Candidate

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

Single Candidate

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

Single Position

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

Single Position

For column 4, Number 2 is only possible in cell (4,6)

Single Position

For column 4, Number 3 is only possible in cell (4,8)

Single Position

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 7 is the only value possible in cell (6,4).

Single Candidate

For box 9, candidates for 7 are all in column 8, so you can remove candidates from other blocks.

Candidate Lines

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

Number 6 is the only value possible in cell (7,4).

Single Candidate

Number 7 is the only value possible in cell (1,5).

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate

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

Single Candidate