(;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][cn][bp][bq][cq][dq][fq]
AW[dd][fd][hd][ce][de][df][cl][bo][co][cp][dp][ep]

;W[ch]C[W1]MN[1]
;B[bh]C[B2]MN[2]

;
)
