(;GM[1]FF[4]SZ[19]
GN[Question1]
PC[http://senseis.xmp.net/?OD1PJuly31Problem/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?OD1PJuly31Problem/Solution

Question1]
PL[B]

AB[dn][fn][ho][bp][dp][ep][fp][ip][cq][iq][br][ir][is]
AW[gp][dq][eq][fq][hq][cr][hr][cs]

;B[hs]C[B1]MN[1]
;W[gs]C[W2]MN[2]
;B[es]C[B3]MN[3]
;W[fs]C[W4]MN[4]

;
)
