(;GM[1]FF[4]SZ[19]
GN[Black first]
PC[http://senseis.xmp.net/?BeginnersEndgameExercise6/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnersEndgameExercise6/Solution

Black first]
PL[B]

AB[cg][dg][eg][bh][ch][bi][ci][bj][dj][fj][dk][dl][cm][bn][cn][bp]
AW[bf][cf][df][ef][ff][bg][fg][ah][dh][eh][fh][di][cj][bl][bm]
CR[an]

;B[ai]C[B1]MN[1]
;B[ag]C[B3]MN[3]
;W[af]C[W4]MN[4]

;CR[an]
)
