Oskar's counter-step maze

Unite the red and blue dots by moving just the red dot. The blue dot follows the red dot, but moves in exactly in the opposite direction. A move is only permitted if the path is clear for both dots.

• Number of puzzles: 5
• Average play time: 15 mins 
• First published: 2003 (itch.io relaunch: July 2021)
• Original: http://www.clickmazes.com/osk1co/new-osk1co.htm
• Keyboard controls: arrow keys or WASD to move; [Z] to undo; [R] for restart. 
• Touchscreen controls: tap at the main menu; swipe to move; open the tab menu in the upper left to undo moves and restart.

puzzlescript implementation - Matthieu Haller - 2021
concept & puzzle design - Oskar van Deventer - 2003