(;GM[1]FF[4]SZ[19]
GN[White tries to escape]
PC[http://senseis.xmp.net/?BeginnerExercise9/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise9/Solution

White tries to escape]
PL[B]

AB[bn][bp][cp][dp][ep][fp][aq][gq][hq][iq][ar][dr][ir][jr][ds][es]
AW[bq][cq][dq][eq][fq][br][fr][gr][hr][bs][cs][gs][is]

;B[er]C[B1]MN[1]
;W[js]C[W2]MN[2]
;B[ks]C[B3]MN[3]
;W[ap]C[W4]MN[4]

;
)
