(;GM[1]FF[4]SZ[19]
GN["Seki" where white first affects double-atari.]
PC[http://senseis.xmp.net/?GoFundamentals]AP[GoWiki:2009]
DT[2010-01-09]
C[Diagram from http://senseis.xmp.net/?GoFundamentals

"Seki" where white first affects double-atari.]
PL[W]

AB[ap][bp][cp][dp][aq][dq][dr][bs][cs]
AW[ao][bo][co][do][fo][ep][bq][eq][ar][br][er][ds][es]

;W[cr]C[W1]MN[1]

;
)
