| Number of items | Infinite |
| Nature of the problems | Logical, numerical, verbal; In a barrel, each problem has to be solved to be able to go to the next problem; The second barrel appears as one advances. |
| Possible raw score range | 0 to ∞ |
| Year of creation | 2001 to 2008 |
| Apparent knowledge requirement | Low |
| Language of instruction and verbal items | English |
| Supervised | No |
| Time allowed | Unlimited |
| Reference aids allowed | Yes |
| Physical form | Login information to a web page where the test is located; One can log in as often as desired to begin or continue the test. |
| Test fee | € 20 or U.S. $ 25 |
| Author | Paul Cooijmans |
| Warning | Be careful: The <COLT> will blow your brain right off. |
