(;GM[1]FF[4]SZ[19]
GN[Black to move]
PC[http://senseis.xmp.net/?DoorGroupExercise1]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?DoorGroupExercise1

Black to move]
PL[B]

AB[bg][cg][dg][dh][di][cj][dj][bk]
AW[bf][cf][df][eg][eh][ei][ej][ck][dk][bl][cm]


;
)
