(;GM[1]FF[4]SZ[12]
GN[Perfect play? (alternative 1)]
PC[http://senseis.xmp.net/?10x10CornerGame1]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?10x10CornerGame1

Perfect play? (alternative 1)]
PL[W]

AB[ab][bb][cb][db][eb][fb][gb][hb][ib][jb][kb][kc][kd][ke][kf][kg][kh][ki][kj][kk][kl]

;W[cj]C[W1]MN[1]
;B[bi]C[B2]MN[2]
;W[bj]C[W3]MN[3]
;B[dk]C[B4]MN[4]

;
)
