(;GM[1]FF[4]SZ[19]
GN[How can W gain sente?]
PC[http://senseis.xmp.net/?HaneAtTheHeadFollowUp]AP[GoWiki:2009]
DT[2010-05-20]
C[Diagram from http://senseis.xmp.net/?HaneAtTheHeadFollowUp

How can W gain sente?]
PL[W]

AB[kb][hc][jc][kc][qf][qj][cp][fq][mq][pq][mr]
AW[lb][dc][lc][kd][pd][qd][cf][iq][lq][lr]
LB[mn:a]
AR[on:qj]

;W[mp]C[W1]MN[1]
;B[np]C[B2]MN[2]
;W[mo]C[W3]MN[3]
;B[no]C[B4]MN[4]
;W[nn]C[W5]MN[5]
;B[on]C[B6]MN[6]

;LB[mn:a]
AR[on:qj]
)
