That game "Pebbling a Chessboard" may not look like interesting at first glance, but it's not such the game, than the solution itself, that it beautiful. And even more than that: it is genius, so this video really is worth watching. Plus the accent and tone of Zvezdelina Stankova are pure delight! Pebbling a Chessboard - Numberphile

Savez-vous vraiment ce qu'est "le génie" ? Et bien cette femme vient justement pour en parler, car il se peut bien qu'elle l'ait rencontré... ;-) Elizabeth Gilbert: Your elusive creative genius #TED Talk