(;GM[1]FF[4]SZ[19]
GN[Probing]
PC[http://senseis.xmp.net/?ProbingDuringTheAttachExtendJoseki]AP[GoWiki:2009]
DT[2011-12-26]
C[Diagram from http://senseis.xmp.net/?ProbingDuringTheAttachExtendJoseki

Probing]
PL[B]

AB[dd][dp]
AW[pd][pq]
CR[nc][qf]
LB[pm:b][pn:a]

;B[po]C[B1]MN[1]
;W[qo]C[W2]MN[2]
;B[qn]C[B3]MN[3]
;W[qp]C[W4]MN[4]

;CR[nc][qf]
LB[pm:b][pn:a]
)
