Calendar Chess

Planning an event with several other people around each of their schedules. This often turns into a gigantic clusterfuck, just like a game of chess for most people.

Person 1: well I can't go on the 19th through 23rd or the 25th, 26th or 29th
Person 2: I can't do it on the 27th
Person 3: I can only go on the 30th
Person 4: fuck off, I'm going alone
Person 5: gosh that's one fucked up game of calendar chess