Sure! Here's a simple implementation of Ludo as a single HTML file using JavaScript and pictograms. The game can be played on a smartphone by tapping on the board to roll the dice and selecting the corresponding piece to move. Note that this implementation is simplified and does not include all the rules and functionalities of a full-fledged Ludo game.
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To play the game, simply copy and paste the above code into a new HTML file. Open the file in a web browser, and you should see the Ludo board with pictogram pieces. Each turn, tap the dice to roll and move the corresponding piece as indicated by the dice value. The board will be updated after each move, and the dice will change on subsequent turns. Have fun playing!