Determine the Figures
Given a board with figures and true or false statements about them, determine the figures.[more]
A figure has a shape (triangle, square, pentagon), a color (yellow, orange, green), a name (, , , …), and a size (small, medium, large).
To get a problem where the statements are independent, the number of statements should be near the number of figures.
(Note that "iff" means "if and only if".)[less]
According to p. 3 of , the most distinctive feature of such problems is that the information comes in two different forms: graphical and sentential.
 J. Barwise and J. Etchemendy, Tarski's World, Stanford, CA: CSLI Publications, 1993.
 J. Barwise and J. Etchemendy, Hyperproof, Stanford, CA: CSLI Publications, 1994.