Why Black Hole is addictive
The rules are minimal, but each rank choice changes the shape of the entire board. Black Hole is one of the cleanest examples of solitaire depth from a very small ruleset.
Core idea
Build a single central sequence by playing visible cards one rank up or down from the current Black Hole top, with Ace and King treated as adjacent.
Strategy tips
- Look several moves ahead before consuming a bridging rank, because one bad branch can strand many piles.
- Since suits do not matter, the game is about preserving rank adjacency options across the whole layout.
- Undo is especially useful here because the best line is often only obvious a few steps later.
Need more detail? Read the Black Hole strategy guide.