Copyright (c) 2001 Larry Back
The game is played on a 8x8 board, with the following setup:
|TROIKA - A Troika is formation of 3 or more Uncrowned
stones in a row, all belonging to the same player, in an orthogonal or diagonal direction.
|GAME EQUALIZER - The
first player must move the same stone on the first two turns.
|TURN - On each turn, each player must do
one of the following things (passing is not allowed):
|move - A Crowned or Uncrowned stone
moves to an adjacent (orthogonal or diagonal) empty cell.
|If an Uncrowned stone becomes part of a 'Troika' after moving, it becomes
|jump - Crowned or Uncrowned stones makes a double jump over two opponent
|Crowned stones can only jump over opponent Uncrowned
| Uncrowned stones can only jump opponent Crowned
|A jumping move consists of moving a stone
two cells in a direction (orthogonal or diagonal) into an
empty cell while passing directly over the opponent stone. After making one jumping move, a
stone must make a second. The second jumping move can be made in the same direction, or in a different
| Notice that a third jumping move is not permitted.
| If no second jumping
move is possible, then the first jumping move cannot be made.
|Jumping moves are not compulsory. All jumping moves must be double jumps.
|When two Uncrowned stones are jumped then the second jumped Uncrowned
stone is captured and removed from the game.
|When two Crowned stones are jumped, as long as a it would not become part a
'Troika', the second jumped Crowned stone becomes Uncrowned. If a 'Troika'
would result from Uncrowning, the second Crowned stone is captured and
removed from the game.
|If an Uncrowned stone becomes part of a 'Troika' after making the double
jump, it is Crowned.
|GOAL - Wins the player that first captures
3 stones, or makes a Crowned Troika (i.e., a Troika with 3 crowned
move. He moves the uncrowned stone at f3 to cell  and makes the third
crown stone (Troika at c1-d2-e3). Now Black must avoid the winning Crown
Troika, but it's too late. After the forced d3-e4, green replies e2-f3,
e4-d3, e3-e4 and wins on the next move!
The crown stone at d6 can jump to cell  and
then it's obliged to jump to one of the cells marked by , capturing
the second jumped stone. However, it is not possible to make a 3rd jump
over stone at e2.
Notice that the uncrown
stone at e6 cannot jump other uncrown stones.
There is a ZRF to play 3
Crowns with Zillions.