(;GM[1]FF[4]SZ[19]
GN[Solution (4 at 1 connects).]
PC[http://senseis.xmp.net/?KyuExercise51/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?KyuExercise51/Solution

Solution (4 at 1 connects).]
PL[W]

AB[do][bp][dp][ep][fp][gp][hp][bq][cq][fq][dr][er][fr][gr][hr]
AW[cl][cn][dn][fn][hn][bo][co][io][cp][ip][aq][gq][hq][iq][br][cr][ir][kr]

;W[dq]C[W1]MN[1]
;B[eq]C[B2]MN[2]
;W[ap]C[W3]MN[3]
;B[dq]C[B4]MN[4]

;
)
