(;GM[1]FF[4]SZ[19]
GN[Reference]
PC[http://senseis.xmp.net/?LadderExercise1/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?LadderExercise1/Solution

Reference]
PL[W]

AB[eb][gb][bc][cc][dc][fc][bd][gd][hd][pd][he][ie][cf][if][jf][jg][kg][ng][kh][lh][li][mi][pi][qi][ri][nj][oj][lk][nk][pk][qk][nl][pm][qo][kp][qp][oq][pq][or]
AW[fb][ec][gc][hc][cd][dd][ed][id][be][ce][ge][je][hf][kf][pf][ig][lg][jh][mh][ph][di][ki][ni][oi][lj][mj][pj][qj][rj][mk][ok][co][dp][pp][gq][qq][rq][pr][rr][qs]
CR[gc]


;CR[gc]
)
