(;GM[1]FF[4]SZ[19]
GN[How does an E.T. arise?]
PC[http://senseis.xmp.net/?TheEmptyTriangleIsBad]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?TheEmptyTriangleIsBad

How does an E.T. arise?]
PL[W]

AB[hi][mj][hk]
AW[ji][jk]
CR[mj]

;W[ij]C[W1]MN[1]
;B[hj]C[B2]MN[2]
;W[jg]C[W3]MN[3]
;B[kj]C[B4]MN[4]
;W[jj]C[W5]MN[5]

;CR[mj]
)
