This challenge is a puzzle of numbers. Everyone of you might have came across this puzzle named 'Sudoku'. I usually see it in the daily Newspaper. The puzzle is just a play of numbers from 1 to 9, arranging them in nine boxes in an order such that each nu

I copied the codes of this solution from the clipboard and tried half a dozen of puzzles with the solution. Unfortunately none of the puzzles were solved. I inserted some simple select statements into the solutions at various points and found that tab

The solution is re-submitted to address a comment by the moderator who rejected the original solution because it referenced a column “Id” not found in the Table TC63. In this solution I am making use of the following ideas (or strategies): 1. Look fo

The solution is re-submitted to address a comment by the moderator who rejected the original solution because it referenced a column “Id” not found in the Table TC63. In this solution I am making use of the following ideas (or strategies): 1. Look fo

The solution is re-submitted to address a comment by the moderator who rejected the original solution because it referenced a column “Id” not found in the Table TC63. In this solution I am making use of the following ideas (or strategies): 1. Look fo

In this solution I am making use of the following ideas (or strategies): 1. Look for unique values in the individual cells - (Cells_Strategy) 2. Look for unique values in each row – (Rows_Strategy) 3. Look for unique values in each column -- (Cols_Str

Please delete puzzle g=26 from the table Entries because it contains a lot of entry errors: select ' /* display of initial data g R/C C1 C2 C3 C4 C5 C6 C7 C8 C9

Please delete puzzle g=26 from the table Entries because it contains many entry errors. select ' /* display of initial data g R/C C1 C2 C3 C4 C5 C6 C7 C8 C9 26 R1 7 0 4 0 9 0 3 0 1 26 R2 0 8 0 1 0 4 6 0 6 26 R3 0 9 4 0 2 0 5 0 3 26 R4 0 1 0 1

Please delete puzzle 26 from the table Entries because there were lot of entry errors. --select ' Select g,r,v, COUNT(*) as q from Entries where v>0 group by g, r,v having count(*)>=2 /* results g r v q 26 2 6 2 26 4 1 2 26 5 2 2 26 6 6