(;GM[1]FF[4]SZ[19]
GN[Correct, according to Yamashita]
PC[http://senseis.xmp.net/?InvasionProblem1/B]AP[GoWiki:2009]
DT[2011-04-30]
C[Diagram from http://senseis.xmp.net/?InvasionProblem1/B

Correct, according to Yamashita]
PL[B]

AB[gc][oc][hd][qd][ce][fe][ge][he][ef][hf][cg][eg][gh][qo][ro][qp][dq][eq][hq][nq][qq][cr][pr][qr]
AW[dc][hc][ic][ed][fd][gd][jd][ee][ff][gf][di][qj][pn][qn][rn][co][po][dp][pp][bq][cq][oq][pq][or]

;B[cl]C[B1]MN[1]
;W[dl]C[W2]MN[2]
;B[dk]C[B3]MN[3]
;W[ck]C[W4]MN[4]
;B[cj]C[B5]MN[5]
;W[bk]C[W6]MN[6]
;B[cm]C[B7]MN[7]
;W[ek]C[W8]MN[8]
;B[dj]C[B9]MN[9]
;W[dm]C[W10]MN[10]

;
)
