(;GM[1]FF[4]SZ[19]
GN[Ongoing Game 4 - black keeps sente]
PC[http://senseis.xmp.net/?OngoingGame4/Discussion]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?OngoingGame4/Discussion

Ongoing Game 4 - black keeps sente]
PL[W]

AB[gb][cc][fc][hc][mc][rc][bd][dd][fd][jd][ld][qd][ce][ee][re][df][hf][nf][fg][kg][lg][qg][dh][eh][gh][jh][qh][ci][di][gi][hi][ji][ki][qi][cj][ij][pj][pk][fl][nl][rl][cm][em][im][km][cn][dn][fn][in][jo][dp][jp][kp][lp][np][lq][nq][pq][mr][or][pr][qr][rr]
AW[ea][bb][cb][fb][mb][nb][dc][ec][pc][qc][ed][hd][od][ne][of][hg][jg][og][ch][fh][hh][ih][ph][ai][ei][ii][mi][pi][dj][fj][hj][jj][nj][dk][hk][jk][bl][cl][ll][ol][qm][bn][en][ln][nn][co][do][eo][io][po][cp][ip][op][pp][qp][cq][hq][jq][kq][oq][qq][ir][nr]
LB[jf:a]

;W[if]C[W1]MN[1]
;B[gg]C[B2]MN[2]
;W[ik]C[W3]MN[3]
;B[ie]C[B4]MN[4]

;LB[jf:a]
)
