(;GM[1]FF[4]CA[UTF-8]AP[gGo:0.3.9]ST[1]
SZ[13]KM[0.0]
PW[White]PB[Black]
AB[ab][af][ag][bb][bg][bk][cb][cg][ci][cl][db][dg][ea][eb][eh][ei][ej][ek][el][em][fh][gh][gm][hi][hj][hk][hl][il][im][ja][ji][jj][ka][kb][kc][kd][ke][kf][kl][lf][lh][li][lj][lk][ll][lm][mf][mi]AW[ac][ae][bc][be][bf][bl][cc][cf][dc][df][ec][eg][fa][fb][fc][fg][fi][fj][fk][fl][fm][gg][gi][gl][hh][ia][ib][ih][ii][ij][ik][jb][jc][jd][je][jf][jg][jk][jl][jm][kg][kh][ki][kk][km][lg][mg]C[British Go Journal 131 - Page 26
13x13 Problem - Simon Goss]
;W[hm]
(
;B[kj]C[Diagram 2. Variations are Diagrams 3 - 5, and Diagram 6]
;W[gk]
;B[gm]
;W[ml]
)
(
;B[ml]C[Diagrams 3 to 5]
(
;W[kj]C[Diagram 4]
;B[gm]
;W[ba]
;B[ca]
)
(
;W[gk]C[Diagram 5]
;B[gm]
;W[ba]
;B[gj]
;W[ca]
;B[kj]
)
)
(
;B[ba]C[Diagram 6]
;W[gk]
;B[gm]
;W[ml]
)
)
