That is a clear sign that I don't master the basics as well as I like to think. Take for instance the following position:
|White to move|
8/5k2/5ppp/4r3/4nRP1/4N2P/5PK1/8 w - - 0 1
The first time it took me 1:41 to solve. Average solving time is 0:54. Rating is 1508.
The combination consists of three basic elements:
- a tempo move (Nc4)
- a target exchange (Rxe4)
- a duplo attack (Nd6+)