Sudoku 16x16 num: 505 (Level: hard)
9
A
4
3
2
8
F
9
5
1
C
C
3
G
5
E
D
A
3
F
B
4
7
6
6
D
A
5
F
9
8
3
C
C
2
G
1
8
E
7
6
F
A
C
G
B
F
4
6
9
A
B
G
E
8
1
A
4
B
6
5
1
C
3
E
1
D
7
A
4
F
B
E
2
C
3
A
B
D
9
6
9
B
G
3
1
4
5
G
G
E
5
A
3
4
9
79D6FBA4C3G251E8
FBA479D651E8C3G2
C3G251E879D6FBA4
51E8C3G2FBA479D6
976DBF4A3C2G158E
BF4A976D158E3C2G
3C2G158E976DBF4A
158E3C2GBF4A976D
D679A4FBG2C3E851
A4FBD679E851G2C3
G2C3E851D679A4FB
E851G2C3A4FBD679
6D974ABF2G3C8E15
4ABF6D978E152G3C
2G3C8E156D974ABF
8E152G3C4ABF6D97
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.