Negative Time Solving Contest

Negative Time Solving Contest is an unofficial online cubing contest held each year at the end of Day Light Saving. By starting before and stopping after the time change, competitors aim to complete puzzles in a negative time.

Negative Time Solving Contest was brought to the speedcubing community in 2004 by Tyson Mao, who modeled it after the Caltech tradition of Negative Time Tommy's Run. Since 2005, it has been hosted by Shotaro Makisumi.

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