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Cook's H-glider, velocity -18c/92 ( $\approx$ -c/5)

**Figure 2.33:** The H glider moves left 18 cells in 92 generations, about -c/5.
$\begin{figure} \centering \begin{picture} (240,415) \put(0,0){\epsfysize = 4... ...rawing %\epsffile{nakedh.EPS} %larger drawing \end{picture} \end{figure}$

This glider takes so many generations to develop that an analysis by de Bruijn diagram is manifestly beyond reach.

Example user SuSE Linux 6.2
2000-05-19

Cook's H-glider, velocity -18c/92 ( -c/5)