Shareware by Matthieu Leschamelle. Windows. Used to be be freeware, but that's history. An all-round program for the problem enthusiast. Problemist solves directmates, helpmates, selfmates and reflexmates. You can rotate positions, print diagrams and much more. With Problemist come 2 true type chess fonts. Link: Problemist (306 KB) and you can download more than 100.000 problems.