This solitaire game, is part of problem solving course that I teach to middle and high school children. It uses simple Mathematics to first draw the outer 'Pentagram' or 'Star Pentagon' (see this Disney animation on this beautiful mathematics piece, through the eyes of Donald Duck - Donald duck in Mathemagical Land - https://www.youtube.com/watch?v=U_ZHsk0-eF0). Then it uses little bit of higher school Mathematics to draw the inner Pentagon - which is finding points of intersection using equation of straight lines! :) It's a solitaire game, with the final aim to leave only 1 token on the screen. Once you start the game, choose which token should be removed from the game. Then, you can move a token by clicking on it, which will make it jump over adjacent token - provided there is an empty slot next to the adjacent token, and that adjacent token will be removed from the game. If you are at an intersection where there are 2 possible moves a token can make; the adjacent tokens will flash and you need to choose one of these tokens, and once selected, it would be removed from the game. So challenge yourself with this game to: 1) Leave only 1 token in the end 2) Select a Green token to be removed from the game initially, and try to have the last token at one of the inner Pentagon slots (where Green tokens are placed) 3) Select a Red token to be removed from the game, and try to leave the last token at one of the outer Pentagram slots (where Red tokens are placed). And then place your comments in the comments region below to share your findings for the 3 challenges! Good luck! #Puzzles #LogicalThinking #Mathematics #AlgorithmicThinking #Algorithms