# 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.

Less than 13 hours till Clueless Explosion number 685!

This is Clueless Explosion 80 for Thursday January 17, 2008, rated Hard

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

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.

007000003008600000006908004900000005000005600000190002000041000009000001610000200
006000058000000200070020000007000800000008100000069030012005900000000000863900000
000100008000000200000003007210067000000308000004000000001002000007000604000050300
040230500000000000000006800000080070800900000007300200084000006000600000706014000
010800005000009200007200100004000070000000000060000300002001800006900000800004030
000520306000008000400000970002006500000004007090070000001700000000000000004052010
005090000408000500000200100000000700000506000000370061600700000001000000700004000
000007165000000000003200980020680000004100000005000600000060090006000000170000800
005000063900000400000640000600013000007400000500000002300204800000008300800000700