Games with Turbo Pascal Source (TP5 for DOS/Windows) -- Master Mind, Rubiks Cube.
mastermind.pas - Source code.
mastermind.exe - Compiled for DOS/95/NT (9K).
cube.pas -- Rubik's cube simulator, Source code.
cube.exe -- Rubik's cube simulator, Compiled for DOS/95/NT (13K).
graphlib.pas Turbo Pascal 3 source of simple graphics library. Included by the several programs below.
hex.pas Draws recursive Hexagons (includes graphlib.pas). See N. Wirth's book on Pascal/Programming on recursive structures.
knight.pas Recursively searches for a Knight's tour on a chessboard. Displays search progress on the board in realtime.
nqueen.pas Recursively searches for safe way to place Queens on a chessboard. Displays search progress on the board in realtime.
nyc.pas Draws a random walk graph (graphics mode).
ring.pas Makes telephone ringing sound (does NOT need sound card).
worm-1.pas Makes a worm slither over the screen (graphics mode).
worm-2.pas Makes a musical worm crawl over the screen (ascii mode), was once a DOS screen saver.
Turbo-C/C++ source of more games for DOS and Linux

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All programs are free for non commercial use, source is provided on a 'as is' basis.
You are free to redistribute unmodified source on cdrom/http/ftp sites.
GPL(C) Mohsin Ahmed http://www.cs.albany.edu/~mosh