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SQR is a colourful mathematical puzzle. The player's point is to make each line's digit sum equal to appropriate column's sum using addition(+) and substraction(-) operation only. Features 6 levels of complexity (up to 7x7) a fascinating intellectual process to train your brains! 18 levels tutorial unlimited levels to play trading cards minimal price Steam achievements pleasant music

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Go to: http://store.steampowered.com/ and download STEAM client Click "Install Steam" (from the upper right corner) Install and start application, login with your Account name and Password (create one if you don't have). Please follow these instructions to activate a new retail purchase on Steam: Launch Steam and log into your Steam account. Click the Games Menu. Choose Activate a Product on Steam... Follow the onscreen instructions to complete the process. After successful code verification go to the "MY GAMES" tab and start downloading.

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