A woman's hand erases a number in Sudoku with an eraser.

Looped Video: No, Frame Rate: 25, Resolution: 3840x2160, Video Encoding: H.264, File Size: 19.78MB, Number of Clips: 1, Total Clip(s) Length: 00:07

A woman’s hand erases a number in Sudoku with an eraser.Tasks and puzzles for the development of logic and intelligence. Classes at home and on the road.

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