(;GM[1]FF[4]SZ[19]
GN[Problem 1: White to kill]
PC[http://senseis.xmp.net/?BaseCaseProblemLearningMethod]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BaseCaseProblemLearningMethod

Problem 1: White to kill]
PL[W]

AB[ca][da][db][ac][bc][cc][dc]
AW[ea][eb][ec][ad][bd][cd][dd][ed]

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

;
)
