(;GM[1]FF[4]SZ[19:5]
GN[Analysis: collapsing seki. B8 elsewhere.]
PC[http://senseis.xmp.net/?AlterIgoEndgameProblems/Problem1Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?AlterIgoEndgameProblems/Problem1Solution

Analysis: collapsing seki. B8 elsewhere.]
PL[W]

AB[ca][cb][bc][cc][bd][be]
AW[da][db][ac][dc][ad][cd][dd][ce]

;W[bb]C[W5]MN[5]
;B[ba]C[B6]MN[6]
;W[ab]C[W7]MN[7]
;W[aa]C[W9]MN[9]

;
)
