CEREVANA

Read premises like “A is north-east of B”, hold the relations in mind, and judge whether the conclusion follows. Distinction, syllogisms, spatial reasoning in 2D/3D/4D, and more - against the clock.

Trains: fluid reasoning - relational integration, logical inference and mental-model building under time pressure.

Based on Syllogimous by 4skinSkywalker, continued by ikokusovereignty and soamsy.

One n-back, best of both worlds: positions on a rotating 3D cube, sounds, colors, shapes and unnameable images at once, interference lures and tally modes - plus the classic Brain Workshop protocol: grid + letters, combination and arithmetic modes, crab and Jaeggi variants.

Trains: working memory - continuous updating, attention control and interference resolution.

Built on Quad Box by soamsy; classic modes after Paul Hoskinson's Brain Workshop.

Digits play one at a time; answer with the result of the current and previous digit - the classic PASAT task. The pace adapts to you: answer streaks speed it up, miss streaks slow it back down.

Trains: cognitive control - divided attention, processing speed and resistance to interference under time pressure.

Mechanics adapted from CCT by tim22dev22.