cURb is a classic 3×3 twisty cube laid out flat and restricted to just two of the six turns — what speedcubers call a “2-gen” cube. The two 3×3 grids are the faces you can twist; the thin strips around them are the neighbouring faces peeking in from the sides.
Scramble, then twist until every face — both grids and all four borders — is a single colour again.
🪑 La chaise (“the chair”) and 🚲 Le vélo (“the bike”) are classic speedcubing algorithms — the anti-Sune and a U-permutation. Fire one from a solved cube and try to untangle it yourself, or use them as building blocks mid-solve.