| What am I missing? | 5 | sudoku | | | | |
| What am I missing? | 4 | sudoku | | | | |
| I don't understand the hints given for this puzzle... (see comments) | 2 | sudoku | | | | |
| How do I make progress? | 2 | sudoku | | | | |
| What am I missing? | 2 | sudoku | | | | |
| How do I approach this? | 1 | sudoku | | | | |
| How would I know if minimising the values of the purple squares or maximising r3c3 and r7c7 is the way to progress? | 1 | sudoku | | | | |
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