(;GM[1]FF[4]SZ[4]
GN[Two space eyes: best play]
PC[http://senseis.xmp.net/?AlterIgoEndgame]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?AlterIgoEndgame

Two space eyes: best play]
PL[B]

AB[ba][bb][ac][bc][bd]
AW[ca][cb][cc][dc][cd]

;B[da]C[B1]MN[1]
;W[aa]C[W2]MN[2]

;
)
