This is a game for two people. Place 45 counters
in a 5 by 9 rectangular array as shown in the illustration.
Players take turns removing counters according to the following rule.
A player divides the counters into two rectangles by drawing a
horizontal or vertical line, and the player must take all the counters
in one of the two rectangles.
The one who is forced to take the last counter is the loser.