Sample Sudoku puzzle. Call the puzzle matrix A.a 8.. | 75. | ..3 World Championship in March 2006 b .3. | .48 | .2. 23:42:37.490 060503 c 1.. | ... | ..6 Iteration counts 0 0 0 ----+-----+---- <-- Blank cell count 42 d 34. | .7. | ..8 e 79. | 48. | .31 f 2.8 | ... | .74 ----+-----+---- g 5.. | 814 | ..7 h .8. | 327 | .4. i 4.. | 569 | ..2
Def. A "cell" is any one of the 81 spaces in the puzzle. Goal. Fill in each empty cell so that each row contains the numbers 1 thru 9 each column contains the numbers 1 thru 9 each block contains the numbers 1 thru 9 Cells are named a1, a2, ..., a9, b1, b2, ..., b9, ..., i1, i2, ..., i9.