be sure to check out their point of view series and don’t miss the categories on the left hand side of the page. all of it seemed expensive, labor-intensive, time-intensive. especially regarding this "fix it in march" statement. i discovered it had the same problem like yours with the intonation being off the scale. the ability to quickly respond (with the hand, finger, or foot) to a signal (sound, light, picture) when it appears. if a simple game of chess with basic functions and below-average playing skill and strength, then let the default chess program in os x answer your prayers. 