So there are speedcubing competitions in places like San Francisco, Paris and Tokyo.

FORBES: That 1980s puzzle fad is back. No batteries required.

There's even a Yahoo Speedcubing group where cubers share techniques and solutions online.

FORBES: That 1980s puzzle fad is back. No batteries required.

There's even a Yahoo (nasdaq: YHOO - news - people ) Speedcubing group where cubers share techniques and solutions online.

FORBES: That 1980s puzzle fad is back. No batteries required.