(;GM[1]FF[4]SZ[19]
GN[Problem 407]
PC[http://senseis.xmp.net/?FiveHundredAndOneTesujiProblems/Errata]AP[GoWiki:2009]
DT[2010-04-09]
C[Diagram from http://senseis.xmp.net/?FiveHundredAndOneTesujiProblems/Errata

Problem 407]
PL[W]

AB[bf][cf][ef][dg][eg][bh][cn][bp][bq][cq][dq][fq]
AW[dd][fd][hd][ce][de][df][ch][cl][bo][co][cp][dp][ep]

;W[cg]C[W1]MN[1]
;B[ci]C[B2]MN[2]
;W[dh]C[W3]MN[3]
;B[ei]C[B4]MN[4]
;W[di]C[W5]MN[5]
;B[dj]C[B6]MN[6]
;W[bi]C[W7]MN[7]
;B[cj]C[B8]MN[8]
;W[bg]C[W9]MN[9]

;
)
