Spider

Spider is the two-deck game that rewards patience over pace. Ten columns, 104 cards, and a single deceptively simple goal: build eight complete King-to-Ace runs, each in one suit, and clear them off the table.

What makes it hard is the gap between what you are allowed to place and what you are allowed to move. Any nine drops onto any ten, so the tableau fills up easily and looks productive. But only same-suit runs travel as a group, so every off-suit placement you make is a knot you will eventually have to untie — and the stock deals ten more cards on top whenever you stall. Good Spider play is mostly about refusing convenient moves that cost you later, which is why the four-suit game has a reputation for being genuinely difficult and why the one-suit version is where most people start.

Two full decks are dealt into ten columns — 54 cards, with the last of each column face up. Columns build downward by rank, and here the suit does not matter for placing a single card: any nine goes onto any ten. Suit matters when you want to move more than one card, because only a run already in the same suit travels together. Assemble a complete King-down-to-Ace run in one suit and it leaves the table. Clear all eight runs and you have won. When you run out of moves you deal ten more cards, one to each column — and you cannot do that while any column sits empty, which turns an empty column from a free space into something you have to spend.

Empty columns are the currency of Spider, and the deal rule is what makes them expensive: you cannot deal while one is empty, so an empty column is worth holding only if you can use it before you need to deal again. Build in-suit wherever you have the choice, even when an off-suit placement looks more immediately useful — an off-suit junction is a wall you will have to unpick later, and Spider deals die under accumulated walls rather than sudden dead ends. Before each fresh deal, tidy up: ten new face-up cards land on top of whatever mess you leave, and a column you could have untangled cheaply becomes much harder once it is buried. Wikipedia puts good play at roughly one win in three at four suits. The one- and two-suit versions remove most of the suit-matching problem and are far more forgiving.