(;GM[1]FF[4]SZ[19]
GN[How does this work?]
PC[http://senseis.xmp.net/?JawStrap/Discussion]AP[GoWiki:2009]
DT[2013-06-23]
C[Diagram from http://senseis.xmp.net/?JawStrap/Discussion

How does this work?]
PL[B]

AB[pc][pd][mf][qf][rf][pg][ph]
AW[pb][rb][nc][qc][pf][qg][rg][pi][qi][pk]
CR[qf][rf]

;B[oe]C[B1]MN[1]
;W[of]C[W2]MN[2]
;B[ng]C[B3]MN[3]
;W[ne]C[W4]MN[4]

;CR[qf][rf]
)
