PlaySudoku.us
Easy · Puzzle #210
4
8
7
6
4
3
9
1
9
5
1
7
2
4
5
2
6
8
7
9
7
9
3
5
8
2
6
3
8
7
9
4
9
2
6
5
4
1
5
6
7
9
1
8
3
8
5
Sudoku appeared as a puzzle category on Jeopardy! during the height of its US popularity in 2005–2006.
Sudoku appeared as a puzzle category on Jeopardy! during the height of its US popularity in 2005–2006.
The Swordfish technique extends X-Wing to three rows and three columns — rare but decisive on expert grids.
The Swordfish technique extends X-Wing to three rows and three columns — rare but decisive on expert grids.