(;GM[1]FF[4]SZ[19]
GN[Attacking the invasion]
PC[https://senseis.xmp.net/?TakagiKatoInvasionClampAndSacrifice]AP[GoWiki:2009]
DT[2020-04-22]
C[Diagram from https://senseis.xmp.net/?TakagiKatoInvasionClampAndSacrifice

Attacking the invasion]
PL[B]

AB[pd][pf][ck][ek][pl][ql][om][qm][bn][pn][qo][hp][jp][np][pp][fq][pr]
AW[ec][nc][dd][jd][cf][ci][dn][qn][rn][go][ro][cp][dp][rp][qq][qr]

;B[lc]C[B1]MN[1]
;W[oe]C[W2]MN[2]
;B[pe]C[B3]MN[3]
;W[ld]C[W4]MN[4]
;B[kd]C[B5]MN[5]
;W[ke]C[W6]MN[6]
;B[kc]C[B7]MN[7]
;W[le]C[W8]MN[8]
;B[jc]C[B9]MN[9]
;W[hc]C[W10]MN[10]

;
)
