My first experience with a sliding-block puzzle was with the "classic 15", in the traditional dimestore plastic frame. (Naturally, you say, the puzzle that chess problemist Sam Loyd claimed to have invented.) It was at my grandmother's (not the grandmother who doted on me like the first son of her first son, the other one) house, where I was glad to find construction toys and to be left alone. I discovered the 15 in a toybox, and when someone dismissed it for being too hard, well, you know how I reacted to that.
Lately, my favorite sliding-block puzzles are by ThinkFun (I thought they were more fun when they called themselves Binary Arts), one of which uses blocks that slide like chessmen (they call it Solitaire Chess, which annoys me because it's not chess — but which other words that fit on a boxtop form an apt description?), and Rush Hour, which uses blocks shaped like little cars.
Like Solitaire Chess, Rush Hour is also a misnomer, because there's no rushing at all. I tweeted at ThinkFun that the Rush Hour player isn't like a commuter, but like a parking valet (the game requires moving cars in a crowded lot so the red car can exit). Very good, they said, the game's original name was "Parking Lot", which probably wasn't going to market as well.
Yesterday I discovered the mobile game Monument Valley, which has racked up an unprecedented number of glowing reviews and awards. I've solved the first three levels, and if you never see me again, you can determine if I'm alive and playing Monument Valley by checking my progress on Google Play.
Monument Valley is a sliding-block game in three dimensions, where the gamescape resembles an Escher, and the object is to move the blocks to form a path for the avatar to reach the exit. The avatar — her name is Ida — encounters some kind words along the way. Gamemakers Ustwo describe Monument Valley as "an illusory adventure of impossible architecture and forgiveness."
No more description is needed. If you like sliding-block games, Escher-like constructions, and kind words, well, see you later.