(;GM[1]FF[4]SZ[19]
GN[White to play (''a'' and ''b'' miai to cut Black off)]
PC[http://senseis.xmp.net/?GokyoShumyoSection7Problem1/Attempts]AP[GoWiki:2009]
DT[2011-12-03]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection7Problem1/Attempts

White to play (''a'' and ''b'' miai to cut Black off)]
PL[W]

AB[hb][jb][ob][pb][nc][oc][id][jd][ne][if][lf][ng][jh][mh][li][ni]
AW[kb][mb][nb][qb][kc][pc][qc][kd][ke][pe][re][kf][kg][lg]
LB[md:a][mf:b]

;W[nd]C[W1]MN[1]
;B[od]C[B2]MN[2]
;W[nf]C[W3]MN[3]
;B[of]C[B4]MN[4]
;W[oe]C[W5]MN[5]

;LB[md:a][mf:b]
)
