These can include, but aren't limited to: basic arithmetic, puzzles like crossword and sudoku, games that require thought like Chess, etc.

它们包括但不限于：基础算术、智力游戏如填字游戏和数独、思考型游戏如象棋等。

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On the Extras, accessible via the settings, you'll find some games (chess and sudoku) and a sketchpad that lets you use the touchscreen to make notes and draw pictures with your finger.

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