Here is a calculator that doubles as a portable travel chess computer. The Saitek Calculator Chess Model 118B comes with 64 levels. It has a hidden chessboard underneath. The board is non-sensory but you can use it to enter and follow the moves. Calculator Chess doesn’t have a super strong engine and thinks for a long time in H levels. You can switch mode with the push of a button. The below video shows it in action:
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Saitek Calculator Chess Travel Chess Computer ►► Gadgetify
This chess calculator is tiny enough to fit in your pocket. It uses a CR2032 battery that you can insert from the back. It has an estimated rating of 1300 USCF but you will have to give it enough time to perform at that level.
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