(;GM[1]FF[4]SZ[19]
GN[Variation a]
PC[http://senseis.xmp.net/?EnclosureOpening]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?EnclosureOpening

Variation a]
PL[B]

AB[dc][oc][pc][qd][ce]
AW[db][nc][od]

;B[eb]C[B1]MN[1]
;W[ec]C[W2]MN[2]
;B[fc]C[B3]MN[3]
;W[ed]C[W4]MN[4]
;B[cb]C[B5]MN[5]
;W[dd]C[W6]MN[6]
;B[cc]C[B7]MN[7]
;W[fb]C[W8]MN[8]
;B[da]C[B9]MN[9]
;W[gc]C[W10]MN[10]

;
)
