Former World Champion Tigran Petrosian said that he learned to calculate by
reading chess books, and by trying to manage without a chess board between
the diagrams. My free blindfold chess program for DOS is ideal for this
type of training. It will also work under all Windows versions. If you own
PocketDOS it will run on your palmtop device. It works finely on my Casio
BE-300. You input moves at the command prompt by typing, e.g., 'g1f3'.
Whenever you want you can display an ascii diagram of the board position.
It also includes Chess256 functionality. Chess256 implies that the pawns
in the initial position are randomized on the second and third rank.
/Mats
http://hem.passagen.se/melki9/blindc.htm