Quoridor variants

Here are some 2004 Quoridor variants by João Pedro Neto and Bill Taylor.

Four-Way Walls

• One player has stones n s e w, the other N S E W.
• Each stone must try to cross the boundary furthest in its name-direction.
• With 13444 equalizer, in each turn each of a player's stones, (move order at the mover's discretion), must move one orthogonal step; then a wall is played (but not on the boundary); all as in Corridor.
• If any stones are adjacent to the moving stone in its chosen direction, it may jump them to the next vacant cell. If a wall blocks this direction part-way through such a jump, either unblocked right-angle may be turned.
• The winner is the first player to get three stones off the board. 

Sample initial moves:

  A   B   C   D   E   F   G   H   I   J   K
a + - - - - - - - - - - - - - - - - - - - +
  :                                       :
b :   +   +   +   +   +   +   +   +   +   :
  :             s                         :
c :   +   +   +   +-------+-------+   +   :
  :                     W                 :
d :   +   +   +-------+   +   +   +   +   :
  :         S |     e |                   :
e :   +   +   +   +   |   +   +   +   +   :
  :         E |       |                   :
f :   +   +   +   +   +   +   +   +   +   :
  :       |                 N |           :
g :   +   +   +   +   +   +   |   +   +   :
  :       |         n         |           :
h :   +   +   +   +   +   +   +   +   +   :
  :                             w         :
i :   +   +   +   +   +   +   +   +   +   :
  :                   |                   :
j :   +   +-------+   |   +   +   +   +   :
  :                   |                   :
k + - - - - - - - - - - - - - - - - - - - +

   N E S W    wall    n e s w    WALL
   """""""""""""""""""""""""""""
1. - - - W    CEj     e e s -    Fik
2. N E S W    GIc     n e w w    Cfh
3. N N S W    EGc     n e w w    DFd
4. N N W W    Hhf     n e w s    Ddf  
5. N E S N    Fdf

This is a very fun game. Both player must, at each turn, decide which enemy player they want to delay, while advancing their own as far as possible.

§

Endless Fences

• Quoridor rules but with no wall limit

Sample game:

                    Joao

        H   G   F   E   D   C   B   A
        |   |   |   |   |   |   |   |
    +-----------------------------------+
    |                                   |
 1--|   +   +   +   +   +   +   +   +   |--1
    |                                   |
 2--|-------+-------+-------+   +   +   |--2
    |                                   |
 3--|   +   +   +   +   +   +-------+   |--3
    |                   |       |       |
 4--|   +   +   +   +   +   +   |   +   |--4
    |                   |       |       |
 5--|   +   +   +   +   +-------+-------|--5
    |                     O   X         |
 6--|   +   +   +   +   +   +-------+   |--6
    |                       |       |   |
 7--|   +   +   +   +   +   |   +   |   |--7
    |                       |   |   |   |
 8--|-------+-------+-------+   |   +   |--8
    |                           |       |
    +-----------------------------------+
        |   |   |   |   |   |   |   |
        H   G   F   E   D   C   B   A

                    Bill
    JoaO       BilX
-----------------------
1. S [ec8]    W [ec2]
2. W [ge8]    E [gi8]
3. S [ac3]    E [b79]
4. S [ge2]    E [gi2]
5. S [ba5]    N [c68]
6. E [b35]    N [d35]
7. S [db5]    N [ac6]
8. E [a68]    resign

§

Endless Barriers

• Quoridor rules except:
• no wall limit
• walls can also be L-shaped
• player's piece moves twice per turn 

Sample game:

                   Joao
  
   A   B   C   D   E   F   G   H   I   J   K   L
 a +-------------------------------------------+ a
   |   |                                       |
 b |   |   +   +   +   +   +   +   +   +   +   | b
   |   |                                       |
 c |   +-------+-------+-------+-------+   +   | c
   |               |                           |
 d |-------+-------|-------+   +   +---+   +   | d
   |               |               | J         |
 e |   +   +   +   +   +-------+   +   +   +   | e
   |                       |   |       |       |
 f |---+   +   +   +   +   |   +---+   |   +   | f
   |   |                   |           |       |
 g |   +-------+-------+   +---+-------+-------| g
   |                 B     |                   |
 h |   +   +   +---+-------+   +   +   +   +   | h
   |           |                               |
 i |   +   +---+   +-------+   +   +   +   +   | i
   |       |       |                           |
 j |   +   +   +   |   +   +   +   +   +   +   | j
   |               |                           |
 k |   +   +   +   +   +   +   +   +   +   +   | k
   |                                           |
 l +-------------------------------------------+ l
   A   B   C   D   E   F   G   H   I   J   K   L
                         Bill
    Bill        Joao             Bill        Joao
-----------------------     -----------------------
1. .N  FHc     SW  EGi      11. NN  Geg    EE  BDg
2. EW  DFc     WW  Eik      12. NE  Bf3    NN  DFg
3. EE  BDc     WW  Bac      13. EE  Id4    resign
4. NN  ACd     SE  HJg
5. NW  CEd     EE  HJc
6. NW  EGd     EE  Gg4
7. SW  Ece     ES  EGh
8. WW  FHe     ES  Dh4
9. SW  Hf1     ES  Ci4
10 SW  Jeg     WW  JLg