ZZ Method (Zbigniew Zborowski)
The ZZ method, short for Zbigniew Zborowski, is a modern speedcubing
method originally proposed by Zbigniew Zborowski in 2006. The method was
designed specifically to achieve high turning speed by focusing on move
ergonomics, and is the combination of a block-building method and a
layer-by-layer method. The initial pre-planned step is called EOLine,
and is the most distinctive hallmark of the ZZ method. It involves
orienting all edges while placing two opposite down-face edges aligned
with their corresponding centers. The next step solves the remaining
first two layers using only left, right and top face turns, one of the
advantages of ZZ. On completion of the first two layers, the last
layer's edges are all correctly oriented because of edge pre-orientation
during EOLine. The last layer may be completed using a number of
techniques including those used in the CFOP method.
An expert variant of this method (ZZ-a) allows the last layer to be
completed in a single step with an average of just over 12 moves and
knowledge of 177 algorithms.
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