Problem with default install of Ubuntu 5.04 on Dell Inspiron 2200 : it all works but the screen finally comes up blank.
Fix : type alt-ctrl-F1 to get a terminal window
login
sudo ed /etc/X11/xorg.conf
/"i810"/s//"vesa"/p
wq
sudo shutdown -h now
(sudo will ask for your password) and reboot the machine.
The Hop Square Covering Problem
The Hop Square Covering Problem
The The Binary Green-Space Problem
The Binary Green Problem - Horiz and Vertical
The Binary Green Problem - Diagonal and Antidiagonal
The Binary Green Problem - Horizontal, Vertical, Diagonal and Antidiagonal
The Binary Green Problem - Horizontal and Vertical, symmetric in 0 and 1
The Binary Green Problem - Horizontal and Vertical, both 1 and zero need space
The Binary Green Problem - Horizontal and Vertical, Every Cell With Exactly One Adjacent Zero
The Binary Green Problem - Horizontal and Vertical, Every Cell With Exactly Two Adjacent Zeros
The Binary Green Problem - Horizontal and Vertical, Every Cell Equals the Sum of Neighbors Mod 2
The Binary Green Problem - Horizontal and Vertical, Every Cell Equals One Minus the Sum of Neighbors Mod 2 (discovery: this is called the lights out puzzle) ,
The Same only with X's instead of 1's
Birds Gotta Fly
Birds Gotta Fly Thesaurus Extrapolations
RSA Challenge Numbers (preserved after challenge withdrawal)
RSA Challenge Numbers