Updates:
  xpuzzles (4.10)
    Random number generator included.
    All puzzles have been put through Sun's cc and lint
    xdino added
    Bug fixed in xmlink. It moved correctly but was hard to turn.
    Bug fixed with control key of xpyraminx.  It turned the whole puzzle
      the wrong way.
    New control key moves for the 2D version of xskewb.
    More freedom in movement in xoct and xpyraminx using control+shift.
    (Later updates to individual puzzles will now be 4.10.1 etc.
     No more different minor version numbers for each puzzle.)

  xpuzzles (<4.10) 
    Removed lint warnings and added a VMS make.com .
    Conservative guess for random number generator.
    A super Makefile to make all puzzles.
    Puzzles now have undo, save, and recall features.
    xmball and xmlink intitialization bug fixed.
    xmball and xmlink added, both need more efficient methods to draw a sector.
    xrubik only save and undo bug fixed.
      After a save, undo did not work.
      auto-solver - sincere thanks to Michael B. Martin
       <martinm@sps1.phys.vt.edu>
    Some older versions used Motif (3.x), XView (2.x), and SunView (1.x)

xrubik is currently the only one in this collection with a auto-solver.

The collection includes:
SLIDING BLOCK PUZZLES
xcubes:		expanded 15 puzzle
xtriangles:	same complexity as 15 puzzle
xhexagons:	2 modes: one ridiculously easy, one harder than 15 puzzle
 
ROTATIONAL 3D PUZZLES
  hold down control key to move whole puzzle
  letters that represent colors can be changed in mono-mode

xrubik:		a nxnxn Erno Rubik's Cube(tm) (or Magic Cube)
		auto-solves 2x2x2 and 3x3x3 (non-orient mode).
xpyraminx:	a nxnxn Uwe Meffert's Pyraminx(tm) (and Senior Pyraminx),
                a tetrahedron with Period 2, Period 3, and Combined cut modes
		and it also a sticky mode to simulate a Halpern's Tetrahedron
		or a Pyraminx Tetrahedron
xoct:		a nxnxn Uwe Meffert's Magic Octahedron (or Star Puzzler) and
		Trajber's Octahedron with Period 3, Period 4, and Combined
		cut modes and it also includes a sticky mode
xskewb:		a Meffert's Skewb (or Pyraminx Cube), a cube with diagonal
                cuts, each face is cut with a diamond shape
xdino:		a Dinosaur Rubik's Cube, a cube with different diagonal cuts,
                each face is cut with a "X"
xmball:		a variable cut Masterball(tm), variable number of latitudinal
                and longitudinal cuts on a sphere, where the longitudinal cuts
                permit only 180 degree turns. 

COMBINATION ROTATIONAL AND SLIDING 3D PUZZLES
  hold down shift key to move whole puzzle
  letters that represent colors can be changed in mono-mode
xmlink:		a nxm Erno Rubik's Missing Link(tm)

Future directions:
  Sorry about the lack of auto-solvers, but I would rather write the puzzle
    than the tedious solution.
  Currently the saved files are cryptic (not intentionally).
  Also xmlink and xmball need better algorithms for drawing sectors than just
    a series of arcs. If you know of any, tell me.

  The rest of the platonic solids (the dodecahedron and the icosahedron), as
    well as Square-1(tm), seem too hard for me.  (Square-1, by the way, was
    the hardest puzzle I ever solved).
  A combined xrubik 2x2x2 and xskewb (Longridge's Super Skewb) is possible as
    well but xskewb as it stands, seems hard enough (for me).
  A Billion Barrel would be nice but only with a auto-solver (the puzzle is
    too hard (I confess, I never solved it)).
  A Panex Puzzle with a Tower of Hanoi mode would be nice as well.

Other neat puzzles on the net:
  "puzzle" (X).
  "magiccube" (Motif) - can actually see the cube rotate in 3D space.
    Use archie to find the one nearest you.

How to install:
  MS DOS/MS Windows & Mac users, sorry no port currently available.
  What you need:
    80386 or better, or Risc, etc.
    UNIX (or even VMS): Linux and FreeBSD are freely available.
    X: XFree86 is freely available on Linux and FreeBSD distributions.
    gunzip: freely available from GNU and the above distributions.
    tar: freely available from GNU and the above distributions.
  What you do:
      make               #  will make all puzzles using imake or if you
                         #  prefer follow the README in each directory

  Questions about the above or how to find out more about puzzles, no problem,
    my mail address is: bagleyd@source.asset.com

