From a 2 x 2.
Leaders Box Circulate twice and 1/4 In (Box Transfer)
as Trailers Box Circulate, 1/4 In, and Box Circulate.
Ends in a 2 x 2.
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| before Single Checkmate | | after
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| before Single Checkmate | | after
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Notes:
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Original Trailers can not Roll. Single Checkmate is the Single version of
Checkmate The Column [A2].
Note that on Checkmate The Column, the Trailing two cannot Roll since their last
part is to Step Ahead.
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Single Checkmate has historically been known as
Split Checkmate when done on each side
and Box Checkmate when done in the center
or from a Box.
Cheat: Box Counter Rotate 1/4; Box Circulate. This cheat
emphasizes that only the original Leaders can Roll. Some other
glossaries list a similar cheat (Box Circulate; Box Counter
Rotate 1/4) which makes it seem as if everyone can Roll.
Checkmate The Column [A2] (H.P. Williams 1975):
From Columns.
First Two Circulate 4 spots &
1/4 In as Last Two Circulate twice, 1/4 In, & Circulate.
Normal Columns end in Parallel Two-Faced Lines.
See also Single CONCEPT [C3A,C3B,C4].