(;GM[1]FF[4]SZ[19]
GN[Diagram 4 - Under Attack]
PC[http://senseis.xmp.net/?ChoHunHyeonsLecturesOnGoTechniques]AP[GoWiki:2009]
DT[2010-10-27]
C[Diagram from http://senseis.xmp.net/?ChoHunHyeonsLecturesOnGoTechniques

Diagram 4 - Under Attack]
PL[W]

AB[pc][pd][de][ge][cf][dg][qg][ck][ek][jo][mo][jp][mp][op][qp][iq][oq][hr][jr]
AW[dc][fc][kc][nc][cd][ce][qi][ql][cm][cp][kp][lp][eq][jq][kq][mq][nq][ir]

;W[ln]C[W1]MN[1]
;B[is]C[B2]MN[2]
;W[kn]C[W3]MN[3]
;B[im]C[B4]MN[4]

;
)
