Quinn should use her ranged poke and high lane pressure to deny Tahm Kench's melee farm and prevent him from safely building passive stacks.
Focus on snowballing early by leveraging Quinn's superior early agency and roam potential to create side-lane pressure and avoid extended grouped fights.
Trading pattern
Use (Q) blind and ranged autos to poke Tahm Kench when he steps up for last hits, denying his return damage.
Avoid extended trades especially when (E) is down, as Tahm Kench's engage becomes more reliable.
Punish Tahm Kench after he uses (W) or misses (Q), as his engage and stun threat temporarily drops.
Danger windows
Be cautious when Tahm Kench reaches three passive stacks and his (Q) stun is available; avoid extended trades during this window.
Avoid engaging or trading when (E) is down, as Quinn becomes vulnerable to Tahm Kench's follow-up engage.
When (R) is up, respect his ability to (R) and isolate you from fights, especially if caught out of position.
Early game
Harass Tahm Kench aggressively before level 6 to prevent him from stacking his passive and landing (Q) stuns.
Keep (E) ready to disengage from his short trades and avoid getting caught by his (Q) slow/stun combo.
Crash waves quickly to open roam windows using (R) and avoid giving Tahm Kench safe melee trades.
Power spikes
At level 6, use (R) to roam and convert lane pressure into map tempo before Tahm Kench can use (R) effectively.
After your first damage item, pressure isolated targets with burst and keep (E) for escape to capitalize on Quinn's kill potential.
Respect Tahm Kench's level 6 (R) threat; avoid three-stack states and track his cooldown to prevent being isolated.
Win conditions
Use Quinn's ranged poke and (Q) blind to deny Tahm Kench melee farm and prevent passive stack buildup.
Crash waves and use (R) to roam and create side-lane picks or pressure, leveraging Quinn's mobility advantage.
Maintain (E) for disengage to avoid Tahm Kench's engage windows and force him into inefficient trades, snowballing lane dominance into map control.
Tip: For Quinn vs Tahm Kench, read overview, trading pattern, and danger windows first for a fast Top lane check.