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

Solution]
PL[W]

AB[ca][bb][cb][ac][bc]
AW[ea][ab][eb][ec][ad][bd][cd][dd][ed]

;W[ba]C[W1]MN[1]

;
)
