From an Eight Chain Thru, Facing Lines, or other applicable formations.

Square Thru until the original Centers become Ends of Back-To-Back Lines and until the original Outsides become Centers of Facing Lines; New Centers (working in the middle) do the anything call or complete the Square Thru n (continuing with alternating hands).

Notes:

• The anything call or completing the Square Thru n is done by the Centers only, working in the middle of the set (Concentric).
• If no n or if anything is given, assume n is 4. Most callers nearly always supply n or anything so that there is no confusion.
• Several callers, myself included, call this as Mixed Up Square Thru, Centers go n More to clearly indicate the number of additional hands for the new Centers.

From Eight Chain Thru:       before Mixed Up Square Thru   after original Centers Square Thru 2 as original Ends Square Thru 1 and 1/4 In   after Centers Left Square Thru 3 (done)

From Facing Lines:       before Mixed Up Square Thru   after original Centers Square Thru 3 as original Ends Square Thru 2 and 1/4 In   after Centers Square Thru 2 (done)

Variations: Split Mixed Up Square Thru (But anything | n).