invalid problem set
Problem 1617
Created 2002-09-13
Name Japan AirLine (JAL)
Source Go:an asian paradigm for business strategy by Miura Yasuyuki, The Ishi Press.
Rating
Difficulty 6 dan
Average Solve Time 216 secs
User Attempts
156 / 3084
Solve Ratio Rating 5 dan
rating history
Miura Yasuyuki wrote : "Nakayama created a ladder problem especially for me. ... He kindly gave me a few hints: JAL has to fly high above on the board. Black on the border at the right of the "L" captures the 23 white stones in the corner. If White resists, it results in a ladder that flies all over the board. Two black stones are waiting for you to arrive safely at the final destination in the lower-left corner. ... The lower-left corner is not only the destination but also the turn-around point. Have a nice flight."
(
;
FF[4]
GM[1]
SZ[19]
AP[Jago:Version 4.42]
AB[ba][ca][ha][ia][na][nb][nc][nd][ne][nf][of][pf][qf][db][dc][dd][de][df][cg][bf][be][ao][an][hd][id][jb][jc][jd][je][jf][gb][gc][gd][ge][gf]
AW[aa][da][ea][fa][ja][ka][oa][pa][qa][ra][sa][sb][rb][qb][pb][ob][oc][pc][qc][rc][sc][sd][rd][qd][pd][od][oe][pe][qe][sf][sg][ri][qi][pi][ib][hb][hc][ab][cb][mb][mc][md][me][jg][ah][ci][cj][ck][bp][aq][ar][as][cs][cc][cd][ce][ac][bc][bd][ad][ae][af][fc][fd][fe]
GN[JAL-ladder]
;
B[se]
;
W[re]
;
B[rf]
;
W[se]
;
B[sh]
;
W[rg]
;
B[rh]
;
W[qg]
;
B[qh]
;
W[pg]
;
B[ph]
;
W[og]
;
B[oh]
;
W[ng]
;
B[mg]
;
W[nh]
;
B[ni]
;
W[mh]
;
B[lh]
;
W[mi]
;
B[mj]
;
W[li]
;
B[ki]
;
W[lj]
;
B[lk]
;
W[kj]
;
B[jj]
;
W[kk]
;
B[kl]
;
W[jk]
;
B[ik]
;
W[jl]
;
B[jm]
;
W[il]
;
B[hl]
;
W[im]
;
B[in]
;
W[hm]
;
B[gm]
;
W[hn]
;
B[ho]
;
W[gn]
;
B[fn]
;
W[go]
;
B[gp]
;
W[fo]
;
B[eo]
;
W[fp]
;
B[fq]
;
W[ep]
;
B[dp]
;
W[eq]
;
B[er]
;
W[dq]
;
B[cq]
;
W[dr]
;
B[cr]
;
W[ds]
;
B[bs]
;
W[br]
;
B[es]
;
W[bs]
;
B[ap]
;
W[bq]
;
B[cp]
;
W[bo]
;
B[bn]
;
W[co]
;
B[do]
;
W[cn]
;
B[cm]
;
W[dn]
;
B[en]
;
W[dm]
;
B[dl]
;
W[em]
;
B[fm]
;
W[el]
;
B[ek]
;
W[fl]
;
B[gl]
;
W[fk]
;
B[fj]
;
W[gk]
;
B[hk]
;
W[gj]
;
B[gi]
;
W[hj]
;
B[ij]
;
W[hi]
;
B[hh]
;
W[ii]
;
B[ji]
;
W[ih]
;
B[ig]
;
W[jh]
;
B[kh]
;
W[kg]
;
B[lg]
;
W[kf]
;
B[lf]
;
W[ke]
;
B[le]
;
W[kd]
;
B[ld]
;
W[kc]
;
B[lc]
;
W[kb]
;
B[lb]
;
W[ga]
;
B[la]
;
W[ia]
;
B[ic]
;
W[ha]
;
B[fb]
;
W[bb]
;
B[ca]
;
W[ba]
;
B[eb]
;
W[ca]
;
B[ag]
;
W[bg]
;
B[cf]
;
W[ag]
;
B[bh]
;
W[ai]
;
B[bi]
;
W[aj]
;
B[bj]
;
W[ak]
;
B[bk]
;
W[al]
;
B[bl]
C[RIGHT])
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