(;GM[1]FF[4]SZ[19]
GN[White reduces the group to zero points at the cost of giving  black three moves elsewhere.]
PC[http://senseis.xmp.net/?WorstMoveProblem15/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?WorstMoveProblem15/Solution

White reduces the group to zero points at the cost of giving  black three moves elsewhere.]
PL[W]

AB[ca][ha][cb][db][fb][gb][hb][dc][ec][fc]
AW[ba][ia][bb][ib][cc][gc][hc][bd][dd][ed][fd][id]

;W[ga]C[W1]MN[1]
;W[fa]C[W3]MN[3]
;W[ea]C[W5]MN[5]

;
)
