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

Best play?]
PL[W]

AB[ea][cb][eb][bc][ec][cd][dd]
AW[fa][fb][fc][ad][bd][ed][fd][ce][de][ee][bf]

;W[ab]C[W1]MN[1]
;B[bb]C[B2]MN[2]
;W[ac]C[W3]MN[3]
;B[ba]C[B4]MN[4]

;
)
