http://en.lichess.org/training/31103
This puzzle brings up an interesting point because of the 50 move rule, and the fact that this was pertinent to the game it was pulled from. This information is important to the position, as it makes almost all other perfectly valid but inferior paths wrong. This is such a rare case that it may not be worth implementing any kind of counter for this kind of draw warning, but I thought it was interesting enough to point it out.
This puzzle brings up an interesting point because of the 50 move rule, and the fact that this was pertinent to the game it was pulled from. This information is important to the position, as it makes almost all other perfectly valid but inferior paths wrong. This is such a rare case that it may not be worth implementing any kind of counter for this kind of draw warning, but I thought it was interesting enough to point it out.