(;GM[1]FF[4]SZ[2]
GN[Moves 20-21]
PC[http://senseis.xmp.net/?LongestPossibleGame]AP[GoWiki:2009]
DT[2015-06-23]
C[Diagram from http://senseis.xmp.net/?LongestPossibleGame

Moves 20-21]
PL[B]

AB[ba][bb]

;B[ab]C[B1]MN[1]
;W[aa]C[W10]MN[10]

;
)
