For "Game Level 1" use the keyboard keys '1, 2, 3, 4, 5, 6' OR 'a, s, d, f, g, h'. Keys '1' and 'a' will move the catching block to postion ONE, '2' and 's' will move it to position TWO etc etc. 
For "Game Level 2" use the keys '1, 2, 3, 4, 5, 6, 7, 8' OR 'a, s, d, f, g, h, j, k'. Click on the "Game Level" dropdown list to choose the game level. 
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