(;GM[1]FF[4]SZ[19]
GN[Verifying Black1's fault by reading follow up (2).]
PC[http://senseis.xmp.net/?HaengmaTutorialForBeginners/CrossCutPosition]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?HaengmaTutorialForBeginners/CrossCutPosition

Verifying Black1's fault by reading follow up (2).]
PL[W]

AB[dd][jd][pd][of][qh][qi][dj][jj][pj][rj][pk][qk][dn][nn][pn][dp][jp][pp]
AW[qf][pi][oj][ok][pl][ql][gp][nq]

;W[rk]C[W1]MN[1]
;B[qj]C[B2]MN[2]
;W[ol]C[W3]MN[3]

;
)
