They [Richter always works on a number of his abstract paintings at a the same time] feed off one another... At the beginning, I feel totally free, and it's fun, like being a child. The paintings can look good for a day or an hour. Over time, they change. In the end, you become like a chess player. It takes me longer than some people to recognize their quality, their situation - to realize when they are finished. Finally, one day I enter the room and say, 'Checkmate.' Then sometimes I need a break, a quiet job, like a landscape. But I always need to paint abstracts again. I need that pleasure.

'Gerhard Richter: An Artist Beyond Isms' (2002)