Open Run — boards without end. No clock, no score.

Sets — race a fixed count of boards. Set of 5 drops your best and worst times; efficiency counts them all.

Blocks — solve as many boards as the clock allows. A board caught by the horn counts fractionally.

Survival — no clock. A budget of 15 wasted moves; when it's spent, the run ends. Verify (−2) buys a clean/fault reading, Concede (−5) buys out of a board. The number above the board is boards survived.

Racing — every scored run has a seed, shown when you share. A seed carries its mode: enter a friend's seed here, press Enter, and you're in their exact game with identical boards.