(;GM[1]FF[4]SZ[19]
GN[B 3 is the key.]
PC[http://senseis.xmp.net/?ReadingProblem1/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?ReadingProblem1/Solution

B 3 is the key.]
PL[B]

AB[il][pl][gm][im][dn][in][do][go][jo][lo][ro][dp][jp][mp][pp][eq][nq][oq][pq][mr]
AW[ik][jk][dl][fl][gl][hl][ol][em][jm][lm][nm][pm][qm][en][eo][mo][fp][hp][ip][np][op][fq][jq][lq][mq][ir]
CR[np][op]

;B[lp]C[B1]MN[1]
;W[lr]C[W2]MN[2]
;B[nn]C[B3]MN[3]
;W[oo]C[W4]MN[4]
;B[on]C[B5]MN[5]

;CR[np][op]
)
