(;GM[1]FF[4]SZ[19]
GN[variant 2b: ko]
PC[http://senseis.xmp.net/?RTGProblem1/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?RTGProblem1/Attempts

variant 2b: ko]
PL[B]

AB[da][cb][eb][ac][bc][dc][ec]
AW[ba][bb][cc][fc][gc][ic][bd][cd][dd][ed]

;B[fb]C[B1]MN[1]
;W[gb]C[W2]MN[2]
;B[fa]C[B3]MN[3]
;W[ca]C[W4]MN[4]
;B[ab]C[B5]MN[5]

;
)
