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3       4       2       1


                                                        Step  3    Now, look at the row/column that has
                    1       2       3       4
                                                                    most numbers filed. Here it will be 4
                                                                                                                  th
                                                                    column. Write missing number ‘3’ in the
                                            2
                                                                    4  column.
                                                                     th

                            1



                                                                                         3       4       2      1
                   Step  4   Now, look at 4  row. Write the possible
                                                th
                               numbers in  the 3  column.   Since  ‘2’
                                                     rd
                               is  repeated  in  1   row, the  box  will  fit            1       2       3      4
                                                  st
                               number ‘4’.
                                                                                                         1      2
                   Step  5   Write the missing number ‘1’ in the 3
                                                                            rd
                               column.
                                                                                                 1     2/4      3



                    3       4       2       1



                    1       2       3       4
                                                         Step  6   Write the missing number ‘2’ in the 1
                                                                                                                 st
                                                                    column, last row.
                                    1       2




                    2       1       4       3


                                                                                         3      4       2       1


                                   Step  7   Now fill the remaining
                                               missing boxes with numbers                1      2       3       4

                                               that do not repeat.
                                                                                         4      3       1       2



                                                                                         2      1       4       3


                                 Bingo!  You have solved the Sudoku!



                                                                    Level 2:  Critical Thinking & Analysis       33
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