# Houston Problem Book Problem 9

**Problem 9 (HPB):** Does there exist a real curve which can be mapped onto each (weakly chainable continuum) real curve? If not, does there exist a rational curve which can be mapped onto each (weakly chainable) real curve? (Asked by A. Lelek, 09/29/71)

**Answer:** Delete the parentheses, weakly chainable is needed (W. Kuperberg and P. Minc, 03/28/79)