┏━━━┯━━━┯━━━┳━━━┯━━━┯━━━┳━━━┯━━━┯━━━┓ ┃ │ │ 1 ┃ │ │ 4 ┃ │ │ 9 ┃ ┠───┼───┼───╂───┼───┼───╂───┼───┼───┨ ┃ │ 2 │ ┃ │ │ 1 ┃ 6 │ │ ┃ ┠───┼───┼───╂───┼───┼───╂───┼───┼───┨ ┃ │ │ ┃ 9 │ 3 │ ┃ 8 │ 4 │ ┃ ┣━━━┿━━━┿━━━╋━━━┿━━━┿━━━╋━━━┿━━━┿━━━┫ ┃ │ 1 │ ┃ │ 4 │ 3 ┃ 7 │ 5 │ 8 ┃ ┠───┼───┼───╂───┼───┼───╂───┼───┼───┨ ┃ │ │ ┃ 1 │ │ ┃ │ 9 │ 6 ┃ ┠───┼───┼───╂───┼───┼───╂───┼───┼───┨ ┃ 3 │ │ ┃ 5 │ │ 6 ┃ │ │ ┃ ┣━━━┿━━━┿━━━╋━━━┿━━━┿━━━╋━━━┿━━━┿━━━┫ ┃ 1 │ │ 2 ┃ 7 │ │ ┃ 4 │ │ ┃ ┠───┼───┼───╂───┼───┼───╂───┼───┼───┨ ┃ │ 9 │ 3 ┃ │ │ ┃ 1 │ 6 │ ┃ ┠───┼───┼───╂───┼───┼───╂───┼───┼───┨ ┃ │ │ 8 ┃ │ │ ┃ │ 7 │ ┃ ┗━━━┷━━━┷━━━┻━━━┷━━━┷━━━┻━━━┷━━━┷━━━┛
Many sudoku software and websites will accept a string of 81 numbers so that you can use them to complete the puzzle interactively.
0,0,1,0,0,4,0,0,9,0,2,0,0,0,1,6,0,0,0,0,0,9,3,0,8,4,0,0,1,0,0,4,3,7,5,8,0,0,0,1,0,0,0,9,6,3,0,0,5,0,6,0,0,0,1,0,2,7,0,0,4,0,0,0,9,3,0,0,0,1,6,0,0,0,8,0,0,0,0,7,0
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
~EOF~