Star Trek Starfleet Academy Checkov's Lost Missions 29: Chimera is by far the hardest mission.
Some say that it is not able to be beaten. Let's find out. You are in an excelsior class ship with 200 torpeadoes. How many will it take to get through this game? There have been attacks on freighters that are so far away from the Klingon and Romulan empires, yet they are falling under attack from ships from these empires. Investigate how this is possible and help the freighters.