(;GM[1]FF[4]SZ[19]
GN[Expensive wall]
PC[http://senseis.xmp.net/?SmallAvalanche]AP[GoWiki:2009]
DT[2010-03-02]
C[Diagram from http://senseis.xmp.net/?SmallAvalanche

Expensive wall]
PL[W]

AB[db][eb][dc][cd][ce][df]
AW[bc][cc][ec][dd][de]

;W[fc]C[W1]MN[1]
;B[fb]C[B2]MN[2]
;W[cf]C[W3]MN[3]
;B[ee]C[B4]MN[4]
;W[ed]C[W5]MN[5]
;B[gc]C[B6]MN[6]
;W[fd]C[W7]MN[7]
;B[gd]C[B8]MN[8]
;W[fe]C[W9]MN[9]
;B[ge]C[B10]MN[10]

;
)
