QUADRAPHAGES

Copyright (c) 2007 Bill Taylor, Joćo Pedro Neto

The game is played on a 9x9 square board.

 
  • MOVE - On each turn, each player must do the following sequence of actions:
    1. moves his stones rookwise, the previous number of cells;
    2. announces a new number (between 1 and 8);
    3. moves his stones the new number of cells.
  • When a stone leaves a cell, it marks it with its own colour.
  • A stone may not land on a marked or occupied cell, or leave the board.
  • Given a number, stone must move if it can; if not, it remains stationary.
  • If possible, a player must choose a number that allows at least one stone to move.
  • Intervening own-pieces or marks of either type do not block a move, but opponent pieces do. The first turn begins with operation (2) & (3) only.
  • GOAL
    • The game stops when all four stones in succession fail to move; then the winner is whoever has the most marked cells.

Here are two sample matches:

                _Bo_                              _Jx_
1.  ....  ....   1   c1b1  g9h9       a7b7  i3i2   3   b7b4  i2f2
2.  b1e1  h9e9   3   e9b9  e1e4       ----  f2c2   4   b4b8  c2g2
3.  b9f9  e4a4   8   a4i4  f9f1       ----  ----   6   g2a2  b8h8
4.  f1f7  i4c4   2   c4c6  f7h7       ----  h8f8   4   f8f4  a2e2
5.  h7d7  c6g6   2   g6g8  d7d5       ----  f4h4   3   e2e5  h4h1
6.  g8d8  d5d2   7   d2d9  d8d1       h1a1  ----   4   a1a5  e5i5
7.  ----  ----   5   d1d6  d9i9       a5f5  ----   4   f5b5  i5i1  
8.  ----  d6h6   3   h6h3  i9i6       b5b2  ----   6   i1i7  ----
9.  ----  h3b3   3   b3b6  i6f6       ----  ----   6   b2h2  i7c7 
10  ----  ----   3   f6f3  b6e6       h2h5  ----   5   h5c5  ----  
11  ----  f3a3   3   a3a6  e6e3       ----  ----   3   c5c8  ----
12  ----  ----   2   e3c3  a8a6       resign


x o o o o o . x x  1
x x x o x x x x x  2
o o O . o o . o x  3
o x o . o x . x o  4
x x x o x x . x x  5
O o o o o o o o o  6
x x X o . o . o x  7
o x X o . x o x .  8
. o . o o o o o o  9
a b c d e f g h i

                _Jx_                              _Bo_
1.  ....  ....   8   a7i7  i3a3       c1c9  g9g1   6   c9c3  g1a1
2.  i7c7  a3a9   3   c7c4  a9d9       a1d1  c3f3   7   d1d8  ----
3.  ----  ----   5   d9i9  c4h4       d8i8  f3f8   2   i8i6  f8h8
4.  h4h2  ----   4   h2h6  i9e9       ----  i6i2   7   i2b2  h8a8
5.  e9e2  h6a6   6   e2e8  a6g6       a8a2  b2b8   6   a2g2  ----
6.  ----  ----   5   g6b6  e8e3       b8g8  g2g7   5   g7b7  g8g3
7.  b6b1  ----   4   b1b5  e3e7       ----  ----   2   g7g5  b7d7
8.  b5d5  e7e5   1   d5d6  e5e6       ----  g5g4   3   g4d4  ----
9.  ----  ----   1   d6c6  e6f6       ----  d4e4   3   e4b4  ----
10  ----  f6f9   4   c6c2  f9f5       b4f4  d7h7   4   h7h3  ----
11  ----  ----   3   c2f2  f5i5       ----  f4i4   4   h3d3  ----
12  ----  ----   8   ----  i5a5       ----  i4a4   2   d3b3  ----
13  a5c5  f2d2   5   ----  c5h5       resign

o x o o . . o . .   1.
o o x X x x o x o   2.   
x O o o x o o o x   3.
O o x o o o o x o   4.  
x x x x x x o X x   5. 
x x x x x x x x o   6.
x o x o x . o o x   7.
o o . o x o o o o   8.  
x . o x x x o . x   9. 
a b c d e f g h i

Hexaphages is the hexagonal variant, which also works:

abcdefghijklmnopq
    x o o o x     1
   o o x o x o    2 
  . o o . x o o   3 
 . o o x x o o o  4 
x O x x x x o x x 5 
 o o o o o x o X  6 
  X o o x x O x   7 
   . X o o x x    8 
    x . O o x     9 
abcdefghijklmnopq 

               _Jx_                         _Bo_
1.  ....  ....  1  e5g5  k7l8    g7h8  m5n6  6  n6b6  h8n2
2.  k3e9  ----  4  g5o5  l8h4    g3o3  b6j6  1  o3n4  j6h6
3.  h4j4  o5q5  4  q5m9  e9a5    h6d2  n2f2  7  d2k9  ----
4.  ----  ----  4  a5e1  m9i5    ----  n4j8  5  j8e3  k9f4  
5.  ----  ----  4  j4f8  e1m1    ----  e3m3  2  f4d6  m3k1
6.  ----  ----  1  i5k5  m1l2    k1j2  f2g1  5  d6i1  j2e7
7.  ----  ----  2  l2h2  k5i7    ----  e7c5  3  i1l4  g1d4
8.  i7o7  ----  6  o7c7  i2n8    ----  ----  2  d4f6  l4p4
9.  ----  n8l6  2  ----  l6p6    l4p4  d4f6  3  p4m7  f6i3
10  ----  ----  resign

Much of these games' interest lies in the tension between the different usefulness of having men in the centre (more directions and at the edges (can go further). This restriction of moves on a hexboard seems to work better.