(;GM[1]FF[4]SZ[19]
GN[Can white play at a and kill black?]
PC[http://senseis.xmp.net/?GokyoShumyoSection7Problem58]AP[GoWiki:2009]
DT[2012-11-29]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection7Problem58

Can white play at a and kill black?]
PL[W]

AB[fa][ga][ka][fb][gb][lb][bc][ic][lc][oc][rc][ad][bd][ed][fd][hd][jd][kd][pd][qd][rd][de][ge][oe][se][cf][gf][nf][fg][nh][rh][ci][ei][li][qi][cj][ej][gj][jj][kj][mj][nj][qj][ak][ck][dk][ik][ok][el][jl][nl][ql][lm][nm][rm][ln][sn][lo][ap][bp][lp][cq][eq][fq][gq][hq][kq][dr][er][hr][is][js]
AW[aa][ba][ca][ha][ia][ja][ma][oa][pa][ra][sa][ab][bb][jb][kb][mb][rb][sb][ac][cc][dc][gc][hc][jc][kc][mc][pc][qc][sc][cd][dd][id][ld][nd][sd][be][ee][ie][ke][me][re][bf][ef][ff][pf][rf][ag][hg][jg][lg][rg][sg][ch][dh][fh][ih][kh][mh][ph][qh][ai][bi][di][ki][mi][ri][si][aj][bj][ij][lj][oj][rj][sj][ek][gk][jk][kk][lk][mk][nk][qk][rk][sk][dl][il][ll][ol][pl][rl][sl][dm][gm][im][jm][km][mm][sm][cn][fn][on][qn][rn][bo][go][oo][cp][dp][ip][jp][kp][mp][np][rp][aq][dq][pq][ar][br][cr][fr][gr][ir][lr][as][bs][cs][ds][es][fs][gs][hs]
LB[bq:a]


;LB[bq:a]
)
