minefield

Short definition from Wiktionary

Noun

1. 1
   An area in which land mines or naval mines have been laid.
2. 2
   A matter or situation presenting multiple risks, dangers, complications or difficulties.
3. 3
   A pitch that has dried out and crumbled and on which the ball is bouncing and spinning unpredictably.
4. 4
   A quiz that terminates when the test-taker answers a question incorrectly.