In the simple game below you start with a sequence of numbers. Taking turns you
and your computer place either plus or minus sign between any two successive numbers.
When all empty spaces have been filled, the arithmetic expression is evaluated. You
win if the result is odd. If the result is even, your computer is the winner.

There is a button "+" at the bottom of the applet. Pressing it will toggle "+" and "-". This
is to tell you what sign will be inserted upon your click. If the Random checkbox is checked,
the applet selects randomly the length of the sequence. Otherwise, it's up to you: try playing
short (even very short) sequences first.