1 Square

Game Description
Remove the squares until only one square remains. Use the numbers to guide your steps.
How to Play
Keyboard: Press "enter" or "space" to start. Use the arrow keys to move the red square left and right.
In normal mode, you have to remove the squares before the flood waters arrive.
Tags
puzzle, math, numbers, counting
Skills
problem solving, perseverence, handling complexity, trial and error, testing ideas