Pocket Edition hints

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Beginner 1–16
01

Hardest technique: Hidden Singles

Full solving path
01Hidden Singles
G6→2
I9→2
F1→3
G3→3
A5→3
B8→3
D2→4
I5→4
C7→4
A6→5
G5→6
C4→7
E8→7
02Naked Singles
G7→8
A8→8
03Naked Singles
A1→9
G4→9
F7→1
C8→2
F8→5
B9→9
G9→7
04Naked Singles
G2→5
B4→8
F5→8
D7→2
A9→1
D9→8
05Naked Singles
D1→7
D3→5
F3→6
I4→1
E5→5
C6→1
E9→6
06Naked Singles
I1→8
E2→8
C3→8
C5→9
D5→1
H6→8
F9→4
07Naked Singles
C1→6
E1→2
H2→6
I2→7
08Naked Singles
H1→1
Solution
9
5
6
7
2
3
4
1
8
2
1
3
4
8
9
5
6
7
4
7
8
5
1
6
3
2
9
6
8
7
3
4
2
9
5
1
3
2
9
1
5
8
6
7
4
5
4
1
6
9
7
2
8
3
7
6
4
2
3
1
8
9
5
8
3
2
9
7
5
1
4
6
1
9
5
8
6
4
7
3
2
02

Hardest technique: Naked Singles

Full solving path
01Naked Singles
H2→3
H3→1
D4→6
G4→3
D7→5
02Naked Singles
D1→7
B3→5
I4→2
D5→4
E7→1
H7→2
H9→7
03Naked Singles
A3→8
C3→9
A4→1
E5→5
G5→7
D6→8
F6→2
I6→4
B8→3
E9→8
F9→3
04Naked Singles
A1→2
B1→1
C2→7
E3→6
F3→4
F4→9
C5→2
F5→1
A6→5
B7→6
05Naked Singles
C1→3
E1→9
C6→6
G7→4
I7→3
A8→7
C8→5
A9→4
06Naked Singles
I1→6
G8→9
C9→1
07Naked Singles
G1→8
G2→5
I9→5
08Naked Singles
I2→9
G9→6
Solution
2
1
3
7
9
5
8
4
6
6
4
7
1
2
8
5
3
9
8
5
9
3
6
4
2
1
7
1
8
4
6
7
9
3
5
2
3
9
2
4
5
1
7
6
8
5
7
6
8
3
2
1
9
4
9
6
8
5
1
7
4
2
3
7
3
5
2
4
6
9
8
1
4
2
1
9
8
3
6
7
5
03

Hardest technique: Naked Singles

Full solving path
01Naked Singles
G1→7
C3→8
D3→3
02Naked Singles
D1→4
H1→8
C2→4
E3→1
03Naked Singles
C1→5
I1→1
D2→7
E2→8
04Naked Singles
I2→6
C9→9
05Naked Singles
I3→9
C7→7
G9→4
06Naked Singles
G3→2
I6→7
G8→9
F9→3
07Naked Singles
A3→6
H4→9
I5→5
E7→9
F7→1
G7→6
F8→4
H8→7
I8→3
A9→8
08Naked Singles
B4→1
D4→5
D5→9
F6→8
H6→2
A7→3
I7→8
A8→2
E8→5
B9→5
09Naked Singles
A2→1
B2→2
A4→7
E4→3
B5→8
F5→7
H5→6
B6→9
E6→4
10Naked Singles
A5→4
E5→2
Solution
9
3
5
4
6
2
7
8
1
1
2
4
7
8
9
5
3
6
6
7
8
3
1
5
2
4
9
7
1
2
5
3
6
8
9
4
4
8
3
9
2
7
1
6
5
5
9
6
1
4
8
3
2
7
3
4
7
2
9
1
6
5
8
2
6
1
8
5
4
9
7
3
8
5
9
6
7
3
4
1
2
04

Hardest technique: Naked Singles

Full solving path
01Naked Singles
B1→3
F1→7
G3→4
I3→6
C6→8
E6→2
D9→7
H9→4
02Naked Singles
E2→8
G2→3
B3→8
E4→7
A5→3
B6→9
I6→3
E8→4
03Naked Singles
B2→4
H2→2
I2→7
A4→2
C4→6
D5→5
I5→8
G8→1
04Naked Singles
C2→5
F2→9
G4→9
H4→1
B5→7
F5→4
H5→6
D6→1
G6→5
05Naked Singles
D2→6
D3→2
F4→3
C7→4
B8→6
C8→7
06Naked Singles
F3→1
D7→3
F8→5
07Naked Singles
F7→2
H7→8
A8→8
D8→9
08Naked Singles
A7→5
H8→3
Solution
6
3
2
4
5
7
8
9
1
1
4
5
6
8
9
3
2
7
7
8
9
2
3
1
4
5
6
2
5
6
8
7
3
9
1
4
3
7
1
5
9
4
2
6
8
4
9
8
1
2
6
5
7
3
5
1
4
3
6
2
7
8
9
8
6
7
9
4
5
1
3
2
9
2
3
7
1
8
6
4
5
05

Hardest technique: Naked Singles

Full solving path
01Naked Singles
B4→5
C4→7
D5→9
F5→4
H6→3
I7→3
02Naked Singles
I2→7
F4→8
I4→2
A6→4
G6→7
03Naked Singles
F2→1
G2→3
A3→8
I3→5
E4→3
H4→9
B6→6
04Naked Singles
F1→5
G1→8
E2→9
H7→8
A8→7
05Naked Singles
E1→2
H1→1
B2→4
E3→6
A7→5
H8→2
G9→6
06Naked Singles
C1→3
F3→7
H3→4
B7→1
G7→9
D8→1
B9→8
C9→4
07Naked Singles
B3→9
C3→1
D3→3
D6→5
D7→7
E7→4
F7→6
C8→6
E8→8
E9→5
08Naked Singles
E6→1
D9→2
Solution
6
7
3
4
2
5
8
1
9
2
4
5
8
9
1
3
6
7
8
9
1
3
6
7
2
4
5
1
5
7
6
3
8
4
9
2
3
2
8
9
7
4
1
5
6
4
6
9
5
1
2
7
3
8
5
1
2
7
4
6
9
8
3
7
3
6
1
8
9
5
2
4
9
8
4
2
5
3
6
7
1
06

Hardest technique: Naked Singles

Full solving path
01Naked Singles
H4→9
02Naked Singles
G4→6
H5→4
03Naked Singles
I4→3
04Naked Singles
E4→1
05Naked Singles
D4→8
06Naked Singles
F4→2
D9→1
07Naked Singles
C9→2
F9→8
08Naked Singles
C8→7
H9→5
I9→4
09Naked Singles
H2→7
H3→1
I3→6
B7→3
C7→1
G7→9
I7→7
I8→2
10Naked Singles
A3→5
C3→9
B6→9
A7→4
F7→6
H7→8
B8→5
11Naked Singles
B3→8
D3→3
G3→4
B5→2
C6→6
12Naked Singles
B1→7
A6→3
D8→9
13Naked Singles
D5→6
E6→4
F6→5
E8→3
14Naked Singles
D1→5
F1→1
F2→9
E5→9
D6→7
15Naked Singles
G1→2
E2→6
F5→3
16Naked Singles
A1→6
A2→2
G2→5
Solution
6
7
4
5
8
1
2
3
9
2
1
3
4
6
9
5
7
8
5
8
9
3
2
7
4
1
6
7
4
5
8
1
2
6
9
3
1
2
8
6
9
3
7
4
5
3
9
6
7
4
5
8
2
1
4
3
1
2
5
6
9
8
7
8
5
7
9
3
4
1
6
2
9
6
2
1
7
8
3
5
4
07

Hardest technique: Naked Singles

Full solving path
01Naked Singles
D4→7
02Naked Singles
D6→3
F6→1
03Naked Singles
D2→4
D3→2
F4→6
H6→7
04Naked Singles
B2→3
F2→7
A6→8
D8→5
05Naked Singles
E2→1
B3→8
B4→2
G6→4
A8→9
F8→2
06Naked Singles
B1→4
G2→6
E3→3
C4→1
F7→4
C8→8
E8→7
H8→1
A9→5
07Naked Singles
C1→7
E1→8
I2→9
C3→9
G3→1
I4→8
A5→7
C7→2
H9→9
08Naked Singles
A1→1
G1→5
I1→3
A3→6
C5→3
G5→2
H7→5
I7→6
C9→4
E9→6
09Naked Singles
I5→1
E7→9
G7→8
G9→7
I9→2
Solution
1
4
7
6
8
9
5
2
3
2
3
5
4
1
7
6
8
9
6
8
9
2
3
5
1
4
7
4
2
1
7
5
6
9
3
8
7
5
3
9
4
8
2
6
1
8
9
6
3
2
1
4
7
5
3
7
2
1
9
4
8
5
6
9
6
8
5
7
2
3
1
4
5
1
4
8
6
3
7
9
2
08

Hardest technique: Hidden Singles

Full solving path
01Naked Singles
I4→3
A5→2
H5→7
A6→8
F6→5
H6→4
02Naked Singles
B4→6
D5→6
F5→3
I5→1
03Naked Singles
D4→2
B5→9
04Hidden Singles
F9→1
D1→4
B2→4
G7→7
A8→7
C3→9
H8→9
05Hidden Singles
D2→1
G3→1
C1→2
G9→2
E1→7
I2→7
F2→9
E9→9
06Naked Singles
G1→3
H1→5
A2→3
E2→2
B9→5
07Naked Singles
A1→1
G2→8
E3→5
F3→8
H3→2
B7→2
I9→8
08Naked Singles
E7→3
F8→2
I8→5
C9→6
09Naked Singles
C7→8
D8→8
E8→6
10Naked Singles
D7→5
C8→3
Solution
1
8
2
4
7
6
3
5
9
3
4
5
1
2
9
8
6
7
6
7
9
3
5
8
1
2
4
5
6
1
2
4
7
9
8
3
2
9
4
6
8
3
5
7
1
8
3
7
9
1
5
6
4
2
9
2
8
5
3
4
7
1
6
7
1
3
8
6
2
4
9
5
4
5
6
7
9
1
2
3
8
09

Hardest technique: Naked Singles

Full solving path
01Naked Singles
F1→8
D4→7
A6→6
G7→4
C9→6
02Naked Singles
C3→8
F4→6
I4→1
B5→1
D6→5
F6→2
B7→5
A9→3
03Naked Singles
B3→6
A4→4
A5→8
C5→7
E5→9
I6→7
D7→3
H7→8
B8→4
D9→1
04Naked Singles
D2→9
H3→7
E7→2
A8→2
F8→7
I8→5
G9→7
05Naked Singles
A2→1
H2→6
E3→3
F3→1
I5→2
C8→9
E8→6
G8→1
E9→5
06Naked Singles
E1→4
I1→3
G2→2
I2→8
G5→6
H5→5
07Naked Singles
C1→2
G1→9
C2→4
E2→7
Solution
5
7
2
6
4
8
9
1
3
1
3
4
9
7
5
2
6
8
9
6
8
2
3
1
5
7
4
4
2
5
7
8
6
3
9
1
8
1
7
4
9
3
6
5
2
6
9
3
5
1
2
8
4
7
7
5
1
3
2
9
4
8
6
2
4
9
8
6
7
1
3
5
3
8
6
1
5
4
7
2
9
10

Hardest technique: Naked Singles

Full solving path
01Naked Singles
A6→9
I9→8
02Naked Singles
B6→4
I7→1
G8→5
03Naked Singles
I4→6
C6→1
B8→3
H8→7
04Naked Singles
I3→3
C4→5
F6→3
C8→8
F8→6
05Naked Singles
B5→6
C5→7
D5→9
G6→2
A7→7
06Naked Singles
B2→2
D4→4
F5→1
F7→4
07Naked Singles
F1→9
H2→4
G5→3
H5→5
E7→2
G7→9
B9→9
F9→7
08Naked Singles
C1→4
C2→3
G2→6
E3→4
F3→5
H3→2
G4→1
B7→5
D7→8
C9→2
D9→3
G9→4
09Naked Singles
G1→8
H1→1
D2→7
C3→9
D3→6
H4→9
10Naked Singles
A1→6
D1→2
A3→8
Solution
6
7
4
2
3
9
8
1
5
5
2
3
7
1
8
6
4
9
8
1
9
6
4
5
7
2
3
3
8
5
4
7
2
1
9
6
2
6
7
9
8
1
3
5
4
9
4
1
5
6
3
2
8
7
7
5
6
8
2
4
9
3
1
4
3
8
1
9
6
5
7
2
1
9
2
3
5
7
4
6
8
11

Hardest technique: Hidden Singles

Full solving path
01Naked Singles
D6→7
02Naked Singles
E5→5
03Naked Singles
F4→2
04Hidden Singles
A3→1
D8→3
C4→4
E7→4
G7→5
H1→8
B9→8
F2→9
C3→9
B6→9
05Naked Singles
B2→5
E3→7
H4→3
I4→8
B5→6
06Naked Singles
B1→3
F1→5
A2→7
A4→5
A5→8
A6→3
07Naked Singles
D1→2
G1→7
G2→6
B7→1
A8→6
08Naked Singles
D2→4
G3→3
H3→4
G6→1
09Naked Singles
I2→2
D3→6
H5→7
I6→6
10Naked Singles
I5→4
I7→7
H8→2
D9→5
H9→6
11Naked Singles
C7→3
F7→6
I8→1
C9→7
12Naked Singles
C8→5
F8→7
F9→1
Solution
4
3
6
2
1
5
7
8
9
7
5
8
4
3
9
6
1
2
1
2
9
6
7
8
3
4
5
5
7
4
1
6
2
9
3
8
8
6
1
9
5
3
2
7
4
3
9
2
7
8
4
1
5
6
2
1
3
8
4
6
5
9
7
6
4
5
3
9
7
8
2
1
9
8
7
5
2
1
4
6
3
12

Hardest technique: Naked Singles

Full solving path
01Naked Singles
I4→4
A6→7
E6→4
D8→1
B9→9
02Naked Singles
E4→3
I5→1
I6→6
B7→6
D7→8
G8→5
03Naked Singles
D3→3
A4→9
H5→8
A7→5
B8→3
E8→6
E9→5
G9→1
I9→7
04Naked Singles
I3→5
A5→3
B5→4
G5→2
E7→2
F7→7
G7→4
C8→7
C9→8
05Naked Singles
A1→6
G2→3
B3→2
F3→4
C5→5
C7→1
H7→9
06Naked Singles
G1→8
F2→5
C3→9
H3→7
07Naked Singles
E1→1
C2→4
E3→8
G3→6
08Naked Singles
C1→3
H1→4
E2→9
H2→1
Solution
6
5
3
7
1
2
8
4
9
8
7
4
6
9
5
3
1
2
1
2
9
3
8
4
6
7
5
9
8
6
2
3
1
7
5
4
3
4
5
9
7
6
2
8
1
7
1
2
5
4
8
9
3
6
5
6
1
8
2
7
4
9
3
4
3
7
1
6
9
5
2
8
2
9
8
4
5
3
1
6
7
13

Hardest technique: Naked Singles

Full solving path
01Naked Singles
D2→7
I2→9
F4→3
02Naked Singles
D1→3
F1→6
H2→6
H4→1
03Naked Singles
I1→1
A2→5
D3→8
H6→8
04Naked Singles
C2→4
E3→4
I3→3
H5→3
E6→2
05Naked Singles
G3→7
E4→5
G5→2
D6→9
G6→4
H7→9
06Naked Singles
C3→9
B4→7
E5→8
B6→1
G8→6
D9→2
G9→3
07Naked Singles
B3→6
C4→2
C5→5
E7→7
G7→1
A8→9
I9→8
08Naked Singles
C1→7
A3→1
B5→9
A7→6
C7→3
I7→4
B8→5
F8→4
A9→7
F9→9
09Naked Singles
A1→2
F7→8
I8→2
Solution
2
8
7
3
9
6
5
4
1
5
3
4
7
1
2
8
6
9
1
6
9
8
4
5
7
2
3
8
7
2
4
5
3
9
1
6
4
9
5
6
8
1
2
3
7
3
1
6
9
2
7
4
8
5
6
2
3
5
7
8
1
9
4
9
5
8
1
3
4
6
7
2
7
4
1
2
6
9
3
5
8
14

Hardest technique: Naked Singles

Full solving path
01Naked Singles
D1→2
E1→5
G3→3
D6→6
C8→6
E9→3
02Naked Singles
A1→6
F2→9
G2→4
C4→3
F4→5
E5→9
G6→8
C7→4
D7→7
03Naked Singles
B1→4
H1→8
B2→5
D2→1
F3→7
I4→6
C5→2
D5→3
F5→4
A6→7
A7→5
G7→6
D8→9
F8→2
B9→7
F9→6
04Naked Singles
I2→2
A3→2
C3→9
A5→8
B5→6
G5→1
I7→3
A8→1
H8→7
H9→4
I9→1
05Naked Singles
A2→3
I3→5
H5→5
I8→8
06Naked Singles
I5→7
Solution
6
4
1
2
5
3
7
8
9
3
5
7
1
8
9
4
6
2
2
8
9
4
6
7
3
1
5
4
1
3
8
7
5
9
2
6
8
6
2
3
9
4
1
5
7
7
9
5
6
2
1
8
3
4
5
2
4
7
1
8
6
9
3
1
3
6
9
4
2
5
7
8
9
7
8
5
3
6
2
4
1
15

Hardest technique: Naked Singles

Full solving path
01Naked Singles
B5→8
E5→9
C9→7
02Naked Singles
C4→2
D4→4
H5→7
A9→4
03Naked Singles
G4→1
H4→9
A5→6
I5→3
C6→5
F6→3
A7→3
B8→5
D8→9
H8→4
D9→8
04Naked Singles
H2→8
A3→1
A4→7
B6→1
I6→4
C7→9
D7→2
I7→7
E8→7
F9→1
G9→6
05Naked Singles
G1→7
I1→1
B2→4
C2→3
E2→1
F2→7
D3→6
E3→2
G3→4
I3→5
G6→2
E7→5
F7→4
G7→8
G8→3
06Naked Singles
D1→3
F1→8
C3→8
07Naked Singles
C1→6
F3→9
Solution
5
9
6
3
4
8
7
2
1
2
4
3
5
1
7
9
8
6
1
7
8
6
2
9
4
3
5
7
3
2
4
6
5
1
9
8
6
8
4
1
9
2
5
7
3
9
1
5
7
8
3
2
6
4
3
6
9
2
5
4
8
1
7
8
5
1
9
7
6
3
4
2
4
2
7
8
3
1
6
5
9
16

Hardest technique: Naked Singles

Full solving path
01Naked Singles
D1→4
G3→4
A8→5
02Naked Singles
I2→7
C7→2
G8→9
03Naked Singles
A2→2
04Naked Singles
D2→8
05Naked Singles
B2→5
D3→2
E3→3
D4→6
D5→7
06Naked Singles
B1→3
C1→6
E1→5
C2→4
A3→7
A4→3
E4→8
07Naked Singles
A1→9
B3→8
C4→5
H4→9
A6→6
E6→4
08Naked Singles
C3→1
I4→1
B5→2
C5→8
F5→3
F6→1
E9→6
09Naked Singles
G5→5
H5→4
B6→7
G6→2
I6→8
E7→7
10Naked Singles
G7→6
H7→8
I8→4
G9→1
H9→2
11Naked Singles
F7→5
F8→8
H8→7
I9→5
12Naked Singles
I7→3
F9→4
Solution
9
3
6
4
5
7
8
1
2
2
5
4
8
1
9
3
6
7
7
8
1
2
3
6
4
5
9
3
4
5
6
8
2
7
9
1
1
2
8
7
9
3
5
4
6
6
7
9
5
4
1
2
3
8
4
1
2
9
7
5
6
8
3
5
6
3
1
2
8
9
7
4
8
9
7
3
6
4
1
2
5
Intermediate 17–30
17

Hardest technique: Hidden Singles

Full solving path
01Naked Singles
F2→1
F3→7
E5→2
E7→7
D8→6
02Naked Singles
D2→5
F6→8
D7→8
F8→2
03Naked Singles
E3→3
D5→9
F5→6
04Naked Singles
D4→1
H5→8
05Naked Singles
B5→7
06Hidden Singles
C1→1
H6→1
G7→1
H3→6
A4→6
G4→7
A8→7
I2→8
07Hidden Singles
B8→1
H2→2
I6→2
A3→8
B4→8
08Naked Singles
C3→9
B9→4
I9→6
09Naked Singles
B2→3
G3→5
C8→3
C9→8
G9→2
10Naked Singles
G1→4
A2→4
B3→2
B6→9
C6→4
B7→5
C7→6
I8→5
11Naked Singles
A1→5
H1→3
G2→9
I4→9
A6→3
E6→5
H8→4
12Naked Singles
E4→4
H4→5
H7→9
I7→3
Solution
5
6
1
2
8
9
4
3
7
4
3
7
5
6
1
9
2
8
8
2
9
4
3
7
5
6
1
6
8
2
1
4
3
7
5
9
1
7
5
9
2
6
3
8
4
3
9
4
7
5
8
6
1
2
2
5
6
8
7
4
1
9
3
7
1
3
6
9
2
8
4
5
9
4
8
3
1
5
2
7
6
18

Hardest technique: Hidden Singles

Full solving path
01Hidden Singles
H5→4
E6→4
C7→4
G9→4
H1→9
E8→9
02Naked Singles
C2→3
03Naked Singles
C1→1
04Naked Singles
A1→5
C9→2
05Naked Singles
G1→6
A3→8
C6→7
A8→1
06Naked Singles
B2→4
C4→6
A5→3
H6→5
B9→5
07Naked Singles
B4→8
A6→2
B8→6
08Naked Singles
B5→1
F6→3
09Naked Singles
F1→2
G6→8
10Naked Singles
E1→3
D6→1
F7→6
11Hidden Singles
G4→3
D9→3
I2→5
G8→5
D3→6
E2→8
D5→8
12Naked Singles
F2→7
G3→7
13Naked Singles
H2→2
E3→5
F5→9
14Naked Singles
F4→5
I5→7
H8→7
15Naked Singles
I4→9
D8→2
I9→1
16Naked Singles
D4→7
E7→1
I7→2
E9→7
17Naked Singles
E4→2
Solution
5
7
1
4
3
2
6
9
8
6
4
3
9
8
7
1
2
5
8
2
9
6
5
1
7
3
4
4
8
6
7
2
5
3
1
9
3
1
5
8
6
9
2
4
7
2
9
7
1
4
3
8
5
6
7
3
4
5
1
6
9
8
2
1
6
8
2
9
4
5
7
3
9
5
2
3
7
8
4
6
1
19

Hardest technique: Hidden Singles

Full solving path
01Hidden Singles
D5→3
B7→3
E9→3
G9→6
G3→7
A7→7
02Naked Singles
B9→1
03Naked Singles
C9→9
04Naked Singles
I9→4
05Naked Singles
G7→8
F9→7
06Naked Singles
C7→5
07Hidden Singles
I3→3
H4→3
F7→4
D2→7
E4→7
A5→9
D6→9
I8→9
08Hidden Singles
B5→8
H1→9
G4→9
09Naked Singles
B8→6
10Naked Singles
A8→8
11Hidden Singles
H5→4
B6→4
12Naked Singles
G6→5
13Naked Singles
G1→4
I5→1
14Naked Singles
A1→5
H6→6
I7→2
15Naked Singles
I2→5
A3→6
B3→2
C6→2
H7→1
16Naked Singles
A2→4
H3→8
B4→5
C4→6
E6→1
17Naked Singles
H2→2
C3→1
F4→2
18Naked Singles
C1→8
F2→6
D3→5
19Naked Singles
E1→2
E2→8
F5→5
20Naked Singles
D1→1
E5→6
E8→5
F8→1
21Naked Singles
D8→2
Solution
5
7
8
1
2
3
4
9
6
4
9
3
7
8
6
1
2
5
6
2
1
5
4
9
7
8
3
1
5
6
4
7
2
9
3
8
9
8
7
3
6
5
2
4
1
3
4
2
9
1
8
5
6
7
7
3
5
6
9
4
8
1
2
8
6
4
2
5
1
3
7
9
2
1
9
8
3
7
6
5
4
20

Hardest technique: Hidden Singles

Full solving path
01Hidden Singles
A3→2
G8→2
H9→3
C4→5
G2→9
I4→9
A9→9
02Hidden Singles
F7→2
B9→2
G6→5
I5→6
E1→9
03Hidden Singles
C5→2
F1→3
E7→3
B4→6
A8→6
04Hidden Singles
A2→3
D2→5
F8→5
D6→6
E9→6
C2→8
05Naked Singles
A1→1
D9→7
06Naked Singles
B1→4
D7→1
I9→5
07Naked Singles
I1→8
B2→7
D4→8
E8→8
08Naked Singles
H1→5
E2→1
D3→4
F4→1
B5→1
09Naked Singles
I2→4
E3→7
G3→1
G5→4
F6→7
10Naked Singles
F3→8
H5→8
A6→8
I7→7
11Naked Singles
A5→7
H6→1
C7→4
I8→1
12Naked Singles
C8→7
H8→4
Solution
1
4
6
2
9
3
7
5
8
3
7
8
5
1
6
9
2
4
2
5
9
4
7
8
1
6
3
4
6
5
8
2
1
3
7
9
7
1
2
3
5
9
4
8
6
8
9
3
6
4
7
5
1
2
5
8
4
1
3
2
6
9
7
6
3
7
9
8
5
2
4
1
9
2
1
7
6
4
8
3
5
21

Hardest technique: Hidden Singles

Full solving path
01Hidden Singles
C8→5
E3→6
A3→7
G5→7
B7→7
F1→8
I2→8
A5→8
I1→9
H8→9
02Naked Singles
H3→4
03Naked Singles
G2→6
G3→2
04Naked Singles
I3→5
05Hidden Singles
B2→1
C1→2
D2→5
I7→6
A9→6
D1→7
F8→7
A6→9
06Naked Singles
E1→4
07Hidden Singles
A4→2
I8→3
H4→6
C5→6
E4→7
08Naked Singles
I4→4
H5→3
09Naked Singles
F4→3
B5→4
10Naked Singles
F3→1
B6→3
E6→1
11Naked Singles
D3→3
I6→2
12Naked Singles
I5→1
D6→4
13Naked Singles
D9→1
14Naked Singles
G9→4
15Naked Singles
G8→1
F9→5
16Naked Singles
F5→2
A8→4
E9→3
17Naked Singles
A2→3
D5→9
C7→3
E7→9
F7→4
18Naked Singles
C2→4
E5→5
A7→1
D7→2
Solution
5
6
2
7
4
8
3
1
9
3
1
4
5
2
9
6
7
8
7
8
9
3
6
1
2
4
5
2
5
1
8
7
3
9
6
4
8
4
6
9
5
2
7
3
1
9
3
7
4
1
6
5
8
2
1
7
3
2
9
4
8
5
6
4
2
5
6
8
7
1
9
3
6
9
8
1
3
5
4
2
7
22

Hardest technique: Naked Singles

Full solving path
01Naked Singles
B1→7
H2→9
C8→3
02Naked Singles
I3→1
H5→5
B8→5
03Naked Singles
G2→6
C3→9
B5→2
A7→7
04Naked Singles
A1→8
B6→3
G9→5
05Naked Singles
C1→1
A2→3
A4→5
A6→9
G7→9
06Naked Singles
F2→1
A5→6
G5→4
I6→8
D7→3
07Naked Singles
D3→4
G4→2
H4→3
C5→7
C6→4
F7→5
I8→6
08Naked Singles
E3→5
F3→3
C4→8
E4→4
I4→7
I5→9
E6→2
G6→1
E7→1
F8→2
H9→8
I9→3
09Naked Singles
F1→6
D9→7
10Naked Singles
E1→9
D2→8
E9→6
F9→4
11Naked Singles
D1→2
E2→7
D8→9
E8→8
Solution
8
7
1
2
9
6
3
4
5
3
4
5
8
7
1
6
9
2
2
6
9
4
5
3
8
7
1
5
1
8
6
4
9
2
3
7
6
2
7
1
3
8
4
5
9
9
3
4
5
2
7
1
6
8
7
8
6
3
1
5
9
2
4
4
5
3
9
8
2
7
1
6
1
9
2
7
6
4
5
8
3
23

Hardest technique: Hidden Singles

Full solving path
01Naked Singles
A4→1
E5→4
02Naked Singles
I4→6
D5→1
E9→5
03Naked Singles
E3→6
D4→7
F5→3
04Naked Singles
H5→2
F6→6
E7→8
05Naked Singles
E1→7
B5→9
I6→1
06Naked Singles
B4→3
H6→3
07Naked Singles
G4→9
C6→2
08Naked Singles
C2→7
A6→5
C8→1
09Naked Singles
C3→9
C7→3
10Hidden Singles
B1→1
G3→3
D3→5
A2→6
H9→7
11Hidden Singles
H3→1
G7→1
F9→1
H1→6
12Hidden Singles
B7→5
F1→9
D9→9
13Naked Singles
D1→4
14Naked Singles
I1→8
F3→2
15Naked Singles
F2→8
G2→5
A3→4
F7→4
16Naked Singles
B2→2
H2→4
I7→2
G8→8
A9→2
17Naked Singles
D7→6
H8→5
I8→4
B9→4
18Naked Singles
B8→6
D8→2
Solution
3
1
5
4
7
9
2
6
8
6
2
7
3
1
8
5
4
9
4
8
9
5
6
2
3
1
7
1
3
4
7
2
5
9
8
6
8
9
6
1
4
3
7
2
5
5
7
2
8
9
6
4
3
1
7
5
3
6
8
4
1
9
2
9
6
1
2
3
7
8
5
4
2
4
8
9
5
1
6
7
3
24

Hardest technique: Hidden Singles

Full solving path
01Naked Singles
B3→8
02Naked Singles
D3→4
03Naked Singles
A3→6
E3→2
04Naked Singles
I3→1
05Hidden Singles
F8→2
E2→3
I2→6
D5→6
F7→6
06Hidden Singles
D2→5
F5→5
F2→9
07Naked Singles
F1→8
B5→2
08Hidden Singles
H4→2
B1→5
H2→8
09Naked Singles
B4→7
10Naked Singles
B6→9
11Naked Singles
B8→3
12Hidden Singles
C1→3
I6→3
G9→3
C5→8
13Hidden Singles
I4→8
E6→8
G8→9
A9→9
14Naked Singles
E4→4
E8→1
15Naked Singles
E7→9
16Hidden Singles
I8→4
A4→5
H6→5
I7→5
A8→8
D9→8
17Naked Singles
I1→7
A6→4
D8→7
18Naked Singles
G1→4
A2→7
C6→6
19Naked Singles
C2→4
C4→1
G5→1
G6→7
A7→1
20Naked Singles
G4→6
H5→4
H7→7
C9→7
21Naked Singles
H9→1
Solution
2
5
3
1
6
8
4
9
7
7
1
4
5
3
9
2
8
6
6
8
9
4
2
7
5
3
1
5
7
1
9
4
3
6
2
8
3
2
8
6
7
5
1
4
9
4
9
6
2
8
1
7
5
3
1
4
2
3
9
6
8
7
5
8
3
5
7
1
2
9
6
4
9
6
7
8
5
4
3
1
2
25

Hardest technique: Naked Singles

Full solving path
01Naked Singles
A2→4
F5→2
D7→5
02Naked Singles
A1→7
D5→1
A7→6
03Naked Singles
C1→3
E5→5
D6→8
A9→8
04Naked Singles
B2→5
F4→3
C7→4
D8→9
05Naked Singles
D1→4
B7→3
B8→1
F9→6
06Naked Singles
F2→9
F3→8
B6→9
E7→7
A8→2
E9→3
I9→4
07Naked Singles
E3→6
B5→4
A6→1
C8→5
E8→8
G9→5
08Naked Singles
I3→7
B4→8
C9→9
09Naked Singles
G3→4
I4→1
I8→6
10Naked Singles
I1→9
I2→3
H3→5
H8→7
11Naked Singles
H5→6
12Naked Singles
H2→2
C5→7
G6→2
13Naked Singles
G1→1
E2→1
C4→2
G4→7
H4→4
G5→9
C6→6
H6→3
14Naked Singles
E1→2
G2→6
Solution
7
6
3
4
2
5
1
8
9
4
5
8
7
1
9
6
2
3
9
2
1
3
6
8
4
5
7
5
8
2
6
9
3
7
4
1
3
4
7
1
5
2
9
6
8
1
9
6
8
4
7
2
3
5
6
3
4
5
7
1
8
9
2
2
1
5
9
8
4
3
7
6
8
7
9
2
3
6
5
1
4
26

Hardest technique: Hidden Singles

Full solving path
01Naked Singles
C1→1
02Naked Singles
C2→7
03Naked Singles
B3→2
04Hidden Singles
H2→1
E6→2
I2→4
C5→4
B9→4
G9→6
I1→9
G5→9
05Naked Singles
G2→2
G3→3
I4→7
06Naked Singles
H1→8
B4→1
I5→5
H6→3
G8→5
07Naked Singles
I3→6
F4→3
A6→7
H7→7
B8→7
C8→3
08Naked Singles
F1→6
A3→8
D4→9
A5→3
C7→5
A9→1
09Naked Singles
E1→3
A2→6
E4→4
10Hidden Singles
D5→1
D7→3
F6→5
E5→6
11Naked Singles
F5→7
D6→8
12Naked Singles
D2→5
F3→1
13Naked Singles
E2→8
E3→7
F8→8
D9→7
14Naked Singles
E7→9
I8→2
E9→5
15Naked Singles
A7→2
I7→8
A8→9
E8→1
Solution
4
5
1
2
3
6
7
8
9
6
3
7
5
8
9
2
1
4
8
2
9
4
7
1
3
5
6
5
1
2
9
4
3
8
6
7
3
8
4
1
6
7
9
2
5
7
9
6
8
2
5
4
3
1
2
6
5
3
9
4
1
7
8
9
7
3
6
1
8
5
4
2
1
4
8
7
5
2
6
9
3
27

Hardest technique: Naked Singles

Full solving path
01Naked Singles
F3→1
I3→5
A7→2
02Naked Singles
G3→2
C7→1
A9→9
03Naked Singles
C4→3
A5→4
B9→6
04Naked Singles
C1→4
B8→4
G9→3
05Naked Singles
C2→2
B3→8
G6→5
D9→1
06Naked Singles
E3→4
A6→8
G8→6
H9→8
I9→7
07Naked Singles
A4→5
H7→5
E9→2
08Naked Singles
A1→7
D7→3
E7→6
H8→1
09Naked Singles
H6→9
10Naked Singles
H1→6
H5→2
I5→1
D6→4
F6→7
11Naked Singles
I1→9
H2→4
I4→6
B5→9
E6→1
I6→3
F8→9
12Naked Singles
F1→3
B4→1
F4→2
D8→5
13Naked Singles
B1→5
D2→9
F2→6
E8→7
14Naked Singles
E1→8
B2→3
E2→5
D4→8
15Naked Singles
E4→9
Solution
7
5
4
2
8
3
1
6
9
1
3
2
9
5
6
7
4
8
6
8
9
7
4
1
2
3
5
5
1
3
8
9
2
4
7
6
4
9
7
6
3
5
8
2
1
8
2
6
4
1
7
5
9
3
2
7
1
3
6
8
9
5
4
3
4
8
5
7
9
6
1
2
9
6
5
1
2
4
3
8
7
28

Hardest technique: Hidden Singles

Full solving path
01Naked Singles
E8→5
02Naked Singles
I8→1
D9→1
03Naked Singles
D8→4
F9→7
04Naked Singles
D7→9
H8→8
05Naked Singles
C8→2
H9→5
06Naked Singles
H3→1
G9→3
07Naked Singles
G1→5
C9→8
08Naked Singles
D1→6
G2→2
I3→3
09Naked Singles
F1→1
10Naked Singles
B1→3
11Naked Singles
C1→4
B7→5
12Naked Singles
B3→8
A7→3
13Naked Singles
A2→5
B2→1
14Naked Singles
F2→9
A3→7
15Naked Singles
E2→8
C3→9
F3→5
16Naked Singles
E4→3
17Naked Singles
C4→5
E6→9
18Naked Singles
C5→7
19Naked Singles
C6→3
20Hidden Singles
G4→1
F5→2
21Naked Singles
F4→6
22Naked Singles
B4→2
23Naked Singles
H4→4
B6→6
24Naked Singles
A4→8
G5→8
H6→2
H7→6
25Naked Singles
A5→4
D5→5
G6→7
I7→7
26Naked Singles
I5→6
D6→8
I6→5
G7→4
Solution
2
3
4
6
7
1
5
9
8
5
1
6
3
8
9
2
7
4
7
8
9
2
4
5
6
1
3
8
2
5
7
3
6
1
4
9
4
9
7
5
1
2
8
3
6
1
6
3
8
9
4
7
2
5
3
5
1
9
2
8
4
6
7
6
7
2
4
5
3
9
8
1
9
4
8
1
6
7
3
5
2
29

Hardest technique: Naked Singles

Full solving path
01Naked Singles
H1→2
B9→1
02Naked Singles
H3→1
B7→8
I9→9
03Naked Singles
B4→5
A9→2
04Naked Singles
B3→4
E4→3
B5→6
C7→9
05Naked Singles
G3→8
06Naked Singles
I1→4
07Naked Singles
F1→3
I7→1
08Naked Singles
C1→8
I8→7
09Naked Singles
A1→6
C2→1
I6→5
10Naked Singles
A2→9
C4→7
I5→8
E6→2
11Naked Singles
F2→4
A3→3
E3→9
G4→1
C6→3
12Naked Singles
D2→6
C3→5
A4→8
A5→1
C5→2
H6→6
E8→4
13Naked Singles
E2→8
E5→5
G6→7
H7→3
G8→2
D9→3
14Naked Singles
F5→7
G5→3
H5→9
D7→2
E7→6
D8→1
F8→9
G9→6
15Naked Singles
D3→7
F3→2
D5→4
F7→5
G7→4
Solution
6
7
8
5
1
3
9
2
4
9
2
1
6
8
4
5
7
3
3
4
5
7
9
2
8
1
6
8
5
7
9
3
6
1
4
2
1
6
2
4
5
7
3
9
8
4
9
3
8
2
1
7
6
5
7
8
9
2
6
5
4
3
1
5
3
6
1
4
9
2
8
7
2
1
4
3
7
8
6
5
9
30

Hardest technique: Hidden Singles

Full solving path
01Naked Singles
C8→4
02Naked Singles
C7→8
03Naked Singles
C9→7
04Hidden Singles
E1→1
H6→1
D7→1
B8→1
F5→3
E9→3
F3→6
A3→7
D4→7
05Naked Singles
A9→2
06Naked Singles
B7→3
F9→4
07Naked Singles
F7→2
08Naked Singles
F6→5
09Naked Singles
C6→9
10Naked Singles
E6→4
11Naked Singles
E4→9
D5→2
A6→8
12Naked Singles
A4→4
I6→2
13Naked Singles
A2→5
B5→6
I8→5
14Naked Singles
A1→3
C2→6
B4→2
C5→5
G8→2
15Naked Singles
H8→3
16Hidden Singles
H2→2
H9→6
17Naked Singles
I9→8
18Naked Singles
I4→6
19Naked Singles
G4→8
20Naked Singles
G2→4
21Naked Singles
I1→9
B2→8
G5→9
22Naked Singles
B1→4
G3→5
H3→8
H5→4
I7→4
23Naked Singles
D1→5
G1→6
B3→9
D3→4
H7→9
Solution
3
4
2
5
1
8
6
7
9
5
8
6
3
7
9
4
2
1
7
9
1
4
2
6
5
8
3
4
2
3
7
9
1
8
5
6
1
6
5
2
8
3
9
4
7
8
7
9
6
4
5
3
1
2
6
3
8
1
5
2
7
9
4
9
1
4
8
6
7
2
3
5
2
5
7
9
3
4
1
6
8
Advanced 31–40
31

Hardest technique: Naked Pair

Full solving path
01Hidden Singles
H5→3
D1→4
I6→6
G2→8
H8→8
02Naked Singles
E5→1
03Naked Singles
D4→3
G5→4
04Naked Singles
D6→9
05Naked Singles
D2→6
06Hidden Singles
I3→4
A4→4
H9→4
F9→6
07Hidden Singles
B8→4
08Hidden Singles
B9→1
09Naked Singles
D9→2
10Naked Singles
D7→1
11Hidden Singles
H1→1
I8→1
A9→3
12Naked Singles
A6→8
13Naked Singles
C4→1
F6→5
14Naked Singles
F4→8
C6→3
G6→1
15Hidden Singles
C1→8
16Naked Pair

Naked Pair 3/7 on cells E8 and F8:

Remove 7 from A8

Remove 7 from C8

17Naked Pair

Naked Pair 2/9 on cells A8 and C8:

Remove 2 from A7

Remove 2 from C7

18Hidden Singles
C8→2
19Naked Singles
A8→9
20Naked Pair

Naked Pair 6/7 on cells A7 and C7:

Remove 7 from G7

21Naked Pair

Naked Pair 6/9 on cells B1 and B5:

Remove 9 from B2

Remove 9 from B3

22Hidden Singles
I2→9
23Naked Singles
I9→7
24Naked Singles
I1→2
G9→9
25Naked Singles
H2→5
I4→5
26Naked Singles
B2→3
G3→7
G4→2
H7→2
27Naked Singles
E2→7
B3→5
C3→9
G7→5
28Naked Singles
B1→6
F1→9
A2→2
F3→3
C5→6
E8→3
29Naked Singles
A1→7
B5→9
C7→7
F8→7
30Naked Singles
A7→6
Solution
7
6
8
4
5
9
3
1
2
2
3
4
6
7
1
8
5
9
1
5
9
8
2
3
7
6
4
4
7
1
3
6
8
2
9
5
5
9
6
7
1
2
4
3
8
8
2
3
9
4
5
1
7
6
6
8
7
1
9
4
5
2
3
9
4
2
5
3
7
6
8
1
3
1
5
2
8
6
9
4
7
32

Hardest technique: Hidden Pair

Full solving path
01Naked Singles
F2→7
F5→2
D7→8
02Naked Singles
D2→1
F3→8
D8→2
E8→3
03Naked Singles
E2→5
D4→7
D5→9
F6→3
F8→6
04Hidden Singles
A4→2
C2→3
C5→5
I6→5
05Hidden Singles
B4→6
I4→8
E6→8
06Naked Singles
E4→1
07Naked Singles
H4→3
E5→4
08Naked Singles
G5→1
09Naked Singles
H6→4
10Naked Pair

Naked Pair 7/8 on cells G8 and G9:

Remove 7 from I8

Remove 7 from I9

11Naked Pair

Naked Pair 1/2 on cells H1 and H9:

Remove 1 from H3

12Hidden Pair

Hidden Pair 4/6 on cells A2 and A3:

Remove 9 from A2

Remove 1 from A3

Remove 7 from A3

Remove 9 from A3

13Hidden Singles
I2→9
14Naked Singles
H3→6
I8→1
15Naked Singles
G2→4
A3→4
H7→9
H9→2
16Naked Singles
H1→1
A2→6
I3→7
B7→5
G7→6
I9→3
17Naked Singles
C1→8
I1→2
A7→3
I7→4
18Naked Singles
B1→7
C8→9
19Naked Singles
A1→5
C3→1
A8→7
20Naked Singles
B3→9
G8→8
A9→1
21Naked Singles
A6→9
B6→1
B9→8
G9→7
Solution
5
7
8
4
6
9
3
1
2
6
2
3
1
5
7
4
8
9
4
9
1
3
2
8
5
6
7
2
6
4
7
1
5
9
3
8
8
3
5
9
4
2
1
7
6
9
1
7
6
8
3
2
4
5
3
5
2
8
7
1
6
9
4
7
4
9
2
3
6
8
5
1
1
8
6
5
9
4
7
2
3
33

Hardest technique: Naked Pair

Full solving path
01Naked Singles
C4→8
02Naked Singles
A4→2
03Naked Singles
B4→9
F4→4
04Naked Singles
I4→6
E5→9
05Hidden Singles
D8→1
H5→4
H3→5
B5→5
C7→5
B7→7
D6→8
06Hidden Singles
A5→1
B8→2
E2→4
07Naked Singles
D1→7
D3→6
A6→3
08Naked Singles
D5→2
09Naked Singles
F5→7
I5→3
D9→4
10Naked Singles
C9→3
11Hidden Singles
A7→4
B2→6
I2→7
12Naked Pair

Naked Pair 3/8 on cells B3 and E3:

Remove 8 from I3

I3→2
13Naked Singles
I6→9
14Naked Singles
I1→8
15Naked Singles
B1→3
H2→1
16Naked Singles
F1→1
F2→8
B3→8
G3→4
H6→2
17Naked Singles
C1→4
G1→9
C3→1
E3→3
G6→1
F9→2
18Naked Singles
F7→3
G9→6
19Naked Singles
G7→2
H7→8
A9→8
20Naked Singles
E7→6
A8→6
H8→3
H9→9
21Naked Singles
E8→8
Solution
5
3
4
7
2
1
9
6
8
9
6
2
5
4
8
3
1
7
7
8
1
6
3
9
4
5
2
2
9
8
3
1
4
5
7
6
1
5
6
2
9
7
8
4
3
3
4
7
8
5
6
1
2
9
4
7
5
9
6
3
2
8
1
6
2
9
1
8
5
7
3
4
8
1
3
4
7
2
6
9
5
34

Hardest technique: Naked Pair

Full solving path
01Naked Singles
C4→7
D4→1
G4→8
C6→6
F6→4
02Naked Singles
A5→2
B5→3
E5→7
G6→3
03Naked Singles
I5→4
04Naked Singles
H5→6
05Hidden Singles
B3→6
F1→7
B2→7
06Hidden Singles
A8→7
07Hidden Singles
A7→8
08Hidden Singles
E7→5
C9→5
09Hidden Singles
C8→1
H7→4
10Naked Pair

Naked Pair 2/9 on cells F8 and G8:

Remove 9 from B8

Remove 9 from E8

B8→4
11Naked Singles
B9→9
12Naked Singles
G9→2
13Naked Singles
G8→9
F9→1
14Naked Singles
F7→9
I7→1
F8→2
15Naked Singles
I3→3
16Naked Singles
H1→1
I9→8
17Naked Singles
A1→5
H2→8
I2→9
H8→3
18Naked Singles
G1→4
A3→1
E8→8
19Naked Singles
C1→2
G2→5
E3→4
20Naked Singles
D1→3
C2→4
D2→2
E2→1
D3→5
E9→3
21Naked Singles
E1→9
D9→4
Solution
5
8
2
3
9
7
4
1
6
3
7
4
2
1
6
5
8
9
1
6
9
5
4
8
7
2
3
4
5
7
1
6
3
8
9
2
2
3
8
9
7
5
1
6
4
9
1
6
8
2
4
3
5
7
8
2
3
7
5
9
6
4
1
7
4
1
6
8
2
9
3
5
6
9
5
4
3
1
2
7
8
35

Hardest technique: Naked Pair

Full solving path
01Hidden Singles
D3→2
G1→8
H8→8
I4→9
02Naked Singles
F1→5
03Naked Singles
I1→7
04Hidden Singles
D4→3
A3→7
E9→7
05Naked Singles
E5→4
06Hidden Singles
F7→4
F6→7
D9→8
07Naked Singles
D6→6
08Naked Singles
F4→8
D7→9
09Naked Singles
F3→6
10Hidden Singles
I2→6
G4→6
A9→9
11Hidden Singles
H2→2
12Naked Singles
H5→7
13Naked Singles
G5→2
14Naked Singles
G6→5
15Naked Singles
G7→7
16Hidden Singles
C6→2
A4→5
17Naked Pair

Naked Pair 4/5 on cells H3 and I3:

Remove 4 from B3

Remove 4 from C3

18Hidden Singles
C4→4
19Naked Singles
H4→1
20Naked Singles
I6→4
H7→5
21Naked Singles
H3→4
I3→5
E7→6
I8→2
22Naked Singles
A8→4
E8→5
23Naked Singles
B8→6
24Hidden Singles
C9→1
A7→2
B2→4
25Naked Singles
B7→3
I9→3
26Naked Singles
B5→9
I7→1
27Naked Singles
B3→8
C5→3
28Naked Singles
A2→1
C3→9
E3→3
B6→1
29Naked Singles
A1→3
E1→1
E2→8
A6→8
Solution
3
2
6
4
1
5
8
9
7
1
4
5
7
8
9
3
2
6
7
8
9
2
3
6
1
4
5
5
7
4
3
2
8
6
1
9
6
9
3
5
4
1
2
7
8
8
1
2
6
9
7
5
3
4
2
3
8
9
6
4
7
5
1
4
6
7
1
5
3
9
8
2
9
5
1
8
7
2
4
6
3
36

Hardest technique: Naked Pair

Full solving path
01Naked Singles
C5→8
02Naked Singles
C2→7
03Hidden Singles
B5→1
F9→2
D1→4
A2→5
E5→5
I6→5
04Hidden Singles
F2→1
A3→1
B2→4
A8→4
H9→5
05Hidden Singles
I8→2
G9→4
06Hidden Singles
I9→3
07Hidden Singles
H2→3
08Naked Singles
G3→6
H5→9
09Naked Singles
G5→3
G8→9
10Hidden Singles
I2→9
11Naked Singles
E2→8
12Hidden Singles
F4→8
13Naked Pair

Naked Pair 6/7 on cells H4 and I4:

Remove 6 from A4

Remove 7 from D4

14Naked Pair

Naked Pair 6/7 on cells B8 and E8:

Remove 7 from D8

Remove 6 from H8

15Pointing Pairs

Pointing Pair between Box 2 and Column F:

Remove 3 from F6

16Pointing Pairs

Pointing Pair between Box 9 and Row 7:

Remove 6 from A7

Remove 6 from C7

C7→2
17Naked Singles
C1→6
A7→9
18Naked Singles
A4→3
19Naked Singles
A1→2
D4→9
A6→6
20Naked Singles
B6→9
F6→7
D9→7
21Naked Singles
F3→3
D6→3
E8→6
B9→6
22Naked Singles
F1→9
B3→8
B8→7
E9→9
23Naked Singles
B1→3
E1→7
I3→7
24Naked Singles
H1→8
I4→6
25Naked Singles
H4→7
I7→8
H8→1
26Naked Singles
D7→1
H7→6
D8→8
Solution
2
3
6
4
7
9
5
8
1
5
4
7
6
8
1
2
3
9
1
8
9
5
2
3
6
4
7
3
2
5
9
4
8
1
7
6
7
1
8
2
5
6
3
9
4
6
9
4
3
1
7
8
2
5
9
5
2
1
3
4
7
6
8
4
7
3
8
6
5
9
1
2
8
6
1
7
9
2
4
5
3
37

Hardest technique: Naked Pair

Full solving path
01Hidden Singles
H8→2
I3→3
H4→4
H1→6
B3→8
A7→8
02Naked Singles
H3→7
H9→1
03Naked Singles
G3→2
G7→5
H7→3
04Naked Singles
G2→1
C3→9
B7→9
05Naked Singles
B1→2
I2→9
E3→4
B9→5
06Naked Singles
B2→4
A8→1
07Naked Singles
A1→7
B6→3
C7→7
C8→3
E8→5
08Naked Singles
C1→1
E7→1
D8→4
09Naked Pair

Naked Pair 7/9 on cells D6 and D9:

Remove 9 from D1

Remove 9 from D4

Remove 7 from D5

D1→3
10Naked Singles
F1→9
11Naked Singles
F9→7
12Naked Singles
F2→2
D9→9
13Naked Singles
E2→7
F4→1
D6→7
14Naked Singles
F6→4
G6→6
15Naked Singles
F5→3
A6→9
G9→8
16Naked Singles
A4→5
G5→7
E6→2
I9→6
17Naked Singles
D4→8
A5→4
E5→6
I6→1
18Naked Singles
E4→9
I4→2
C5→2
D5→5
19Naked Singles
C4→6
I5→8
Solution
7
2
1
3
8
9
4
6
5
3
4
5
6
7
2
1
8
9
6
8
9
1
4
5
2
7
3
5
7
6
8
9
1
3
4
2
4
1
2
5
6
3
7
9
8
9
3
8
7
2
4
6
5
1
8
9
7
2
1
6
5
3
4
1
6
3
4
5
8
9
2
7
2
5
4
9
3
7
8
1
6
38

Hardest technique: Naked Pair

Full solving path
01Naked Singles
C7→8
02Naked Singles
B7→7
03Naked Singles
A9→5
04Naked Singles
A4→9
C9→2
05Naked Singles
H4→1
06Hidden Singles
G9→1
I5→2
I7→6
A3→8
B1→9
07Naked Singles
A5→4
08Hidden Singles
D4→2
I6→5
G8→8
E9→8
G3→9
D7→9
09Hidden Singles
D5→1
H6→9
I9→9
10Naked Singles
E6→6
F6→8
11Naked Singles
B6→1
12Hidden Singles
B5→8
13Naked Pair

Naked Pair 6/7 on cells A1 and G1:

Remove 7 from E1

Remove 7 from I1

I1→4
14Naked Singles
C1→3
I8→7
15Naked Singles
B2→5
C5→5
H9→3
16Naked Singles
C2→4
B4→3
F5→3
H8→4
D9→7
17Naked Singles
D3→6
E4→5
F8→2
18Naked Singles
F1→1
D2→3
H3→7
E8→3
19Naked Singles
E1→2
G1→6
E2→7
E3→4
H5→6
F7→4
20Naked Singles
A1→7
A2→6
F3→5
G5→7
E7→1
Solution
7
9
3
8
2
1
6
5
4
6
5
4
3
7
9
2
8
1
8
2
1
6
4
5
9
7
3
9
3
6
2
5
7
4
1
8
4
8
5
1
9
3
7
6
2
2
1
7
4
6
8
3
9
5
3
7
8
9
1
4
5
2
6
1
6
9
5
3
2
8
4
7
5
4
2
7
8
6
1
3
9
39

Hardest technique: Naked Pair

Full solving path
01Hidden Singles
A7→1
H8→3
G1→5
A2→5
C6→5
H9→5
C4→6
I7→6
02Hidden Singles
F7→2
I9→2
C9→3
D5→5
03Hidden Singles
A4→2
E5→2
I8→4
C7→7
04Naked Singles
C3→9
A9→8
05Naked Singles
A3→7
B9→9
06Naked Singles
A1→3
E9→6
07Naked Singles
A5→4
08Hidden Singles
G3→4
H4→4
G7→9
09Naked Singles
H7→8
10Naked Pair

Naked Pair 1/8 on cells D6 and D8:

Remove 1 from D1

Remove 8 from D1

Remove 8 from D2

Remove 1 from D3

Remove 8 from D3

D3→2
11Naked Singles
B3→8
12Naked Singles
B2→6
I3→1
13Naked Singles
B1→2
H1→9
D2→4
14Naked Singles
I1→8
H5→1
D9→7
15Naked Singles
D1→6
E1→1
F5→3
I6→7
F9→4
16Naked Singles
F1→7
F4→8
B5→7
I5→9
B6→3
17Naked Singles
F2→9
G4→3
D6→1
G6→8
18Naked Singles
E2→8
D8→8
F8→1
19Naked Singles
E8→9
Solution
3
2
4
6
1
7
5
9
8
5
6
1
4
8
9
2
7
3
7
8
9
2
3
5
4
6
1
2
1
6
9
7
8
3
4
5
4
7
8
5
2
3
6
1
9
9
3
5
1
4
6
8
2
7
1
4
7
3
5
2
9
8
6
6
5
2
8
9
1
7
3
4
8
9
3
7
6
4
1
5
2
40

Hardest technique: Naked Pair

Full solving path
01Naked Singles
C4→8
F5→2
02Naked Singles
D5→9
C6→7
03Naked Singles
B5→4
E5→6
04Naked Singles
H5→7
05Hidden Singles
B9→1
C7→4
A1→8
06Naked Singles
A7→7
07Naked Singles
A3→3
08Hidden Singles
F6→3
H8→4
09Naked Singles
B6→9
F8→8
10Naked Singles
B4→3
G6→1
B8→2
11Naked Singles
H6→5
B7→8
12Naked Singles
E6→8
13Naked Pair

Naked Pair 6/7 on cells B3 and I3:

Remove 7 from E3

Remove 6 from G3

Remove 7 from G3

Remove 6 from H3

G3→2
H3→1
14Naked Singles
H1→3
G9→7
15Naked Singles
H2→6
G8→9
I9→5
16Naked Singles
B2→7
I3→7
G4→6
H4→9
H7→2
I7→6
E8→7
F9→4
17Naked Singles
B3→6
F3→5
D7→5
E9→2
18Naked Singles
E1→1
E3→4
D4→1
E7→9
19Naked Singles
C1→2
D2→2
E2→3
E4→5
20Naked Singles
D1→7
C2→1
Solution
8
5
2
7
1
6
4
3
9
4
7
1
2
3
9
5
6
8
3
6
9
8
4
5
2
1
7
2
3
8
1
5
7
6
9
4
1
4
5
9
6
2
8
7
3
6
9
7
4
8
3
1
5
2
7
8
4
5
9
1
3
2
6
5
2
3
6
7
8
9
4
1
9
1
6
3
2
4
7
8
5

Also in your companion

Bonus strategy tutorials Coming soon

Step-by-step examples for when you're ready to go beyond the basics.

Intermediate and advanced techniques

When you're ready to progress, start with the Beyond the basics section of our How to Play guide.