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

Natural development]
PL[W]

AB[dd][pd][qp]
AW[dp][op]

;W[cf]C[W1]MN[1]
;B[fd]C[B2]MN[2]
;W[dj]C[W3]MN[3]
;B[jd]C[B4]MN[4]

;
)
