# Clueless Explosion

This page offers a weekly Clueless Explosion puzzle. There are 9 Sudoku grids which must be solved according to the standard rules. The cell in the center of each box has a blue color. Together, these cells form a 10th sudoku, in the same formation you see them on your screen. Each of the 9 Sudokus adds a 3x3 box to this central Sudoku. Solving these puzzles requires a lot more patience than usual. None of these 9 puzzles can be solved independently, so you need to use the interaction with the central Sudoku. To check your results, go to the list of submissions.

Keep in mind that each of the 9 Sudokus is also a Center-Dot Sudoku, because the 9 blue cells must also contain digits 1 through 9. If you need some assistence in handling this puzzle format, you can download the Clueless Helper, a program that can open these puzzles directly from this website.

This is Clueless Explosion 67 for Thursday October 18, 2007, rated Very Hard

 9 3
 3 9 4
 2 1
 1 9 5
 4 3 1 2
 5 4 3
 7 6
 2 3 5
 3 4
 7 5
 6 9 4
 8 9
 8 5 7
 7 1
 9 7 1
 5 7
 2 4 3
 4 6
 5 6
 3 5
 1 9 7 6 5
 9 4 7
 3 9
 3 2 6
 2 3 4 6 1
 4 8
 8 2
 1 8 2
 7 8
 3 7
 9 3
 6 3 1 9
 7 5
 4 9
 5 7
 9 7 3
 2 7
 5 9
 8 1 2
 2 7 4
 6 3 7
 5 3 1
 7 8
 2 5
 3 6 4
 1 9
 8 1
 7 8
 8 4 2 5
 9 4
 1 2
 9 8
 8 4 3
 3 7
 8 9
 2 7 1 4 8
 9 2 7
 1 5
 8 3 6
 1 2 5 4 9
 2 1
 4 6
 4 9
 3 7 2
 7 5
 4 1 9
 3 6
 8 5 4
 9 2
 7 5 8
 8 5
 5 7
 9 1 4
 5 1
 1 7 4
 8 4 5 7
 6 5 3
 9 4
 1 9 8
 6 5

These number strings represent each of the 9 constituent puzzles. You can copy each of these 9 strings and paste them in your sudoku program. This allows you to work on each of the 9 constituent puzzles on your computer. A program like SudoCue allows several instances running at the same time.

900003201000009000300400000007060008000000900500904000005030019600005700000000605
010403050000000000950102043080701090005000700700000001000000000009000300470309026
706200003000300000000005004500020400007000000000403006230040800004800002601000000
108007003000000000020008070000500008207000100000900002030001080000000000604009001
009603700000000000300109005200000006007000300400000007700804009000000000008205400
400500907000000000090700030500007000003000205100008000010900080000000000200800403
000000207300008100007090048400307000000000700009020005500900000000001000700004501
920105083007000600000000000400000008001000500090306040170804065000000000040507030
102000000005200004490010600000705008009000000200080500000001006000900000904800005