Connect numbers and letters in alternating sequence across a scattered node field. Speed and flexibility sprint.
Digital Trail Making Test Part B. Tap nodes in the sequence 1→A→2→B→3→C… as quickly as possible.
Completing all nodes under 60 seconds is considered elite. Average players complete 60–70% of nodes.
Rapid visual scanning and motor execution reflects the brain's raw throughput for sequential tasks.
Alternating between number and letter sets requires constant task-set switching — a core executive function.
The Trail Making Test is one of the most sensitive neuropsychological measures for detecting early cognitive decline.
Pathfinder is a digital implementation of the Trail Making Test Part B, one of the most widely used neuropsychological assessments in the world. It measures processing speed and cognitive flexibility — your ability to rapidly switch between two mental sets (numbers and letters) while tracking your position in a scattered visual field.
The alternating sequence (1→A→2→B...) forces continuous task-set switching. Each transition requires your working memory to hold the current position while scanning for the next target. Slower transitions and more errors indicate higher cognitive switching costs — a key marker of executive function.
Pre-scan before tapping: Take 1 second at the start to locate key nodes before rushing in. A planned path beats a reactive one.
Anticipate the next node: While tapping the current node, your eyes should already be moving to the next target.
The Pathfinder Test measures processing speed and cognitive flexibility — your ability to rapidly switch between two mental sets (numbers and letters) while maintaining spatial awareness. It is a digital adaptation of the Trail Making Test Part B, one of the most widely used neuropsychological assessments.
Nodes labeled with numbers and letters are scattered across the screen. Connect them in alternating sequence: 1→A→2→B→3→C... Click each node in order. Errors add time penalties. The test has a 90-second time limit.
Scores vary based on the number of nodes and errors. Higher scores indicate faster completion with fewer errors. The test is age-sensitive — younger adults typically score 20-30% higher than adults over 60.
The Trail Making Test was developed by the U.S. Army in 1944 and has since become one of the most sensitive measures of frontal lobe function. Part B (the alternating version) specifically measures cognitive flexibility and set-shifting ability. Slower completion times correlate with prefrontal cortex damage, ADHD, and early-stage dementia.
Plan your route before starting — scan the entire field to identify the general locations.
Look ahead — while clicking one node, locate the next one.
Practice alternating sequences in daily life — count alternating numbers and letters as a mental exercise.
Stay calm — rushing leads to errors that are more costly than taking an extra second to plan.