(;GM[1]FF[4]SZ[19]
GN[White lives. (4 at marked stone)]
PC[http://senseis.xmp.net/?Twirl/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?Twirl/Solution

White lives. (4 at marked stone)]
PL[W]

AB[bb][eb][fb][ac][bc][cc][ec][gc][hc][dd][fd][de][ee][cf][ci]
AW[ba][ca][ea][fa][cb][db][gb][dc][bd][cd]
CR[bc]

;W[ad]C[W1]MN[1]
;B[ab]C[B2]MN[2]
;W[aa]C[W3]MN[3]
;W[bf]C[W5]MN[5]
;B[bg]C[B6]MN[6]
;W[af]C[W7]MN[7]

;CR[bc]
)
