I'm not sure if this is a brag, a quirky anecdote, or both, but it sure was a fun thing to see:

DS-just-turned-5 was close to beating me at a game of chess, but he ended up needing to pull off a rook king checkmate in order to win. He didn't know how, although he did know enough to avoid a stalemate (I tried!). After about half an hour of me leading him on a merry chase around the board (and facing the prospect of a game that might never end!), I finally suggested that we could take a break so he could go learn how to do a rook-king checkmate. With zero assistance or input, he got our Ipad, typed in "rook-king checkmate" into the search box of Youtube, selected and watched an appropriate video, came back, and checkmated me in very short order.