(;GM[1]FF[4]SZ[19]
GN[Black first]
PC[http://senseis.xmp.net/?SomeEndgameProblem6/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?SomeEndgameProblem6/Solution

Black first]
PL[B]

AB[ga][gb][gc][hc][ic]
AW[ha][la][ib][lb][jc][kc][lc]

;B[jb]C[B1]MN[1]
;W[kb]C[W2]MN[2]
;B[hb]C[B3]MN[3]
;W[ja]C[W4]MN[4]

;
)
