Sudoku 16x16 num: 520 (Level: hard)
B
6
G
E
F
C
D
G
9
A
2
F
C
F
A
2
3
E
A
2
B
4
3
5
9
E
G
F
1
2
A
D
8
B
E
G
3
4
9
A
F
1
1
D
8
B
G
1
7
B
9
4
3
6
C
7
D
A
2
G
7
D
A
9
3
G
E
B
6
A
F
G
4
5
4
E
G
6
7
8
E
6
4
2
A
F
1
C
1
A
5
3
A
7
1
4
4359B6GE1FC7A28D
B6GE4359A28D1FC7
1FC7A28D4359B6GE
A28D1FC7B6GE4359
34956BEGF17C2AD8
6BEG34952AD8F17C
F17C2AD834956BEG
2AD8F17C6BEG3495
5943GEB6C71F8DA2
GEB659438DA2C71F
C71F8DA25943GEB6
8DA2C71FGEB65943
9534EG6B7CF1D82A
EG6B9534D82A7CF1
7CF1D82A9534EG6B
D82A7CF1EG6B9534
Sudoku 16x16
Sudoku 16x16 is one of the largest and most fascinating variations of the classic puzzle, designed for those who enjoy thinking on a grand scale. The grid contains 16 rows and 16 columns, divided into smaller regions of 4x4 cells, each of which must respect the same placement rules as the rest of the board. The objective is to complete all the empty spaces with the numbers 1 through 16, making sure that no digit is repeated in any row, column, or region. Because of its size, this version requires extra concentration and a methodical approach, but its logical foundation remains the same as traditional Sudoku. Solving it feels like weaving together many small puzzles into one impressive challenge.
Every game begins with a selection of pre-filled numbers that guide your progress. Using these clues, you analyze interactions across rows, columns, and boxes, slowly narrowing down the possibilities until the solution emerges. Guessing is never necessary, since each puzzle has only one valid answer, reachable through careful reasoning. This 16x16 format is perfect for players who want to step up from 12x12 or 15x15 boards and explore the thrill of a truly large Sudoku. It's both entertaining and mentally stimulating, helping to sharpen logic, memory, and long-term focus. Tackling a 16x16 puzzle may look intimidating at first, but with patience and persistence, each solved section becomes a rewarding victory that brings you closer to completing the whole board.