Sudoku 16x16 num: 417 (Level: hard)
4
9
A
D
2
8
4
F
C
E
3
5
5
C
B
1
F
6
C
E
B
5
D
6
8
4
G
G
6
8
7
A
B
6
2
8
7
1
3
9
5
D
9
A
3
4
2
7
9
2
7
G
2
9
F
G
C
A
5
9
B
E
F
2
A
5
7
8
2
6
4
G
8
D
A
E
7
3
E
A
9
D
9
C
F
1
4
8
7
B
3
9
5
7
6
2
4G1F267859ADCE3B
26784G1FCE3B59AD
59ADCE3B4G1F2678
CE3B59AD26784G1F
G4F1628795DAECB3
6287G4F1ECB395DA
95DAECB3G4F16287
ECB395DA6287G4F1
1F4G7826AD593BCE
78261F4G3BCEAD59
AD593BCE1F4G7826
3BCEAD5978261F4G
F1G48762DA95B3EC
8762F1G4B3ECDA95
DA95B3ECF1G48762
B3ECDA958762F1G4
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.