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

An extra liberty]
PL[B]

AB[cb][db][eb][bc][cc][ec][fd][gd][ee][cf][df]
AW[bb][fb][ac][dc][fc][hc][bd][cd][dd][ed]

;B[ba]C[B1]MN[1]
;W[ab]C[W2]MN[2]
;B[fa]C[B3]MN[3]
;W[gb]C[W4]MN[4]

;
)
