Minimal Points to Win - Numbershark game - corrected

Hi all,

the calculation of the minimum number of points to win for the numbershark game in line 312 was wrong.
	int minPtsToWin = numberOfFields * (numberOfFields + 1) / 4;

 +1 must be added to the result.
new calculation: int minPtsToWin = (numberOfFields * (numberOfFields + 1) / 4)+1

Greetings,
Robin Holtmann