(;GM[1]FF[4]SZ[19]
GN[Failure]
PC[https://senseis.xmp.net/?GokyoShumyoSection2Problem28/Solution]AP[GoWiki:2009]
DT[2023-01-10]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection2Problem28/Solution

Failure]
PL[W]

AB[db][ec][bd][cd][dd][ed][fd]
AW[eb][fb][fc][hc][gd][ce][fe][cf][ef][ch]

;W[cb]C[W1]MN[1]
;B[da]C[B2]MN[2]
;W[cc]C[W3]MN[3]
;B[bb]C[B4]MN[4]

;
)
