Under Pressure is a board game for two players, using unequal forces and with unequal objectives.
 
Board
The game is played on an hexagonal board having 5 hex. by side.
Players are named Red and Yellow. They use tokens of their own colour. Red tokens are named Women. Yellow tokens are named Men. (names bear no sexual signification whatever and they can be inverted).
 
At the beginning of the game :
- Red has 1 piece on the central hex. of the board and 26 off
- Yellow has 27 pieces disposed all around the board, as shown below.
 
Objectives
- Red's objective is to place or move a Woman on an hex. of the edge of the board.
- Yellow's objective is to capture all Women on the board or to stalemate Women.
 
Move rules
- Red plays first, Yellow second. Players alternate turns.
 
Red moves :
- A Woman can move in any direction to an adjacent empty hex, providing she keeps a connection with at least one other Woman present on the board. A Woman's move cannot break the connection between Red pieces.
- A Woman can be dropped (from Red's supply of 26 pieces) to any empty hex. adjacent to a Woman and non-adjacent to a Man.
 
Yellow moves :
- A Man can move in any direction to any adjacent empty hex. Men are not forced to stay connected.
 
Capture rules
Yellow and Red capture in the same way, by jump over opponent's pieces, in any direction. As in International Checkers (or HexDame), the longest jump must be realised and captures are mandatory.
 
Further information
- An isolated Woman cannot move, she is stalemated, unless she can realise a connection with a Woman nearby.
- Red does not win the game if a Woman reaches the border during a jump and if capture is not over. The Woman must continue her jump.
- Repetition of the position is forbidden for both players.
- The game is a draw if Yellow has no more pieces and Red is not on the edge of the board.