Sudoku 20x20 num: 211 (Level: hard)
3
G
7
6
C
G
7
6
J
H
1
2
D
4
6
2
D
I
C
G
9
B
B
8
E
C
G
F
H
G
6
9
C
I
K
1
2
J
D
J
I
1
H
3
G
A
I
4
1
D
7
A
E
E
8
B
7
3
C
2
D
7
3
C
E
9
H
4
6
A
A
I
D
7
C
4
6
A
I
3
9
8
6
F
1
C
2
E
B
H
K
4
6
J
F
6
F
H
K
8
9
7
3
2
1
A
6
J
2
5
D
6
3
F
A
I
G
2
8
F
C
B
D
6
3
7
I
G
J
7
4
6
9
F
C
7
5
K
4
9
9BE83CG76A52DFIJ4KH1
CG76A9BE83J4KH152DFI
52DFIJ4KH19BE83CG76A
J4KH152DFICG76A9BE83
B98EC37GA625FDJIK41H
37GA6B98ECIK41H25FDJ
25FDJIK41HB98EC37GA6
IK41H25FDJ37GA6B98EC
E89BG73C526AIJDFH14K
73C52E89BGFH14K6AIJD
6AIJDFH14KE89BG73C52
FH14K6AIJD73C52E89BG
8EB97GC325A6JIFD1HK4
GC3258EB97D1HK4A6JIF
A6JIFD1HK48EB97GC325
D1HK4A6JIFGC3258EB97
4D639KFACBHI5GE1J278
KFACB4D6391J278HI5GE
HI5GE1J2784D639KFACB
1J278HI5GEKFACB4D639
Sudoku 20x20
Sudoku 20x20 takes the traditional puzzle format and magnifies it into a truly impressive grid of 20 rows and 20 columns. The board is divided into rectangular regions of 4x5 cells, and the challenge is to place the numbers 1 through 20 so that none repeat in any row, column, or region. Working with a wider range of digits means you'll encounter more complex interactions and patterns, which demand a careful and methodical approach. Rather than focusing on speed, this format rewards patience, steady reasoning, and the ability to keep track of multiple possibilities at once. Solving it feels like navigating a large logical landscape, where every step brings you closer to order.
Each game begins with a selection of pre-filled numbers that serve as your starting framework. From these given values, you gradually uncover the solution by cross-checking rows and columns, testing relationships between regions, and ruling out conflicts. Every 20x20 Sudoku is designed to have a single unique solution, achieved through pure logic and observation. This larger format is ideal for players who want to explore puzzles beyond 12x12, 16x16, or even 18x18, and who enjoy the satisfaction of working on a board that feels expansive and ambitious. It strengthens memory, focus, and problem-solving skills while offering a deeply engaging experience. Completing a 20x20 Sudoku is both a mental workout and a rewarding achievement, transforming a grid full of possibilities into a perfectly balanced structure.