Sudoku techniques for beginners
Start Sudoku by checking what is missing from each row, column and 3×3 box. Write the possible numbers in empty squares, then look for a square with one option or a number with one possible place. The examples below show the difference.
Tic-Tac-Toe strategy: how to stop losing
You can avoid losing Tic-Tac-Toe from an empty board by playing correctly, but you cannot force a win against another perfect player. Check for an immediate win, stop an immediate loss, then look for forks. The positions below show why those checks need that order.
Solitaire draw 1 vs draw 3
Draw one turns over one stock card at a time. Draw three turns over up to three together, but only the exposed top waste card can be played. The tableau and foundation rules stay the same. In our game, Hard also limits stock passes, so draw count and pass count are separate choices.
How to use Sudoku notes
Sudoku notes record possible numbers while you work out an answer. In our game, select an empty square, turn NOTES on and tap digits to add or remove small marks. Turn NOTES off before entering a confirmed answer. A note is a reminder, not a checked solution.