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.

before Single Checkmate   after

before Single Checkmate   after

• 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.
• 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].