(;GM[1]FF[4]SZ[19]
GN[Variant 4 (both 'a' are self-atari)]
PC[http://senseis.xmp.net/?KBCProblem1/Solution]AP[GoWiki:2009]
DT[2009-07-02]
C[Diagram from http://senseis.xmp.net/?KBCProblem1/Solution

Variant 4 (both 'a' are self-atari)]
PL[B]

AB[da][bb][db][fb][ec][dd][fd][de][af][bf][cf]
AW[ca][cb][bc][cc][dc][cd][be]
LB[aa:a][ad:a]

;B[ab]C[B1]MN[1]
;W[ae]C[W2]MN[2]
;B[ac]C[B3]MN[3]
;W[ba]C[W4]MN[4]
;B[ce]C[B5]MN[5]

;LB[aa:a][ad:a]
)
