Tahm Kench should focus on durable, short melee trades to build passive stacks and punish Kennen's poke attempts.
Manage lane pressure by denying Kennen free ranged poke and avoiding extended trades that favor his mobility and mark stacking.
This lane is a control vs teamfight matchup where Tahm Kench must survive early poke and look to isolate Kennen with (R) for picks or protect allies in fights.
Trading pattern
Build three passive stacks before committing to (Q) to maximize stun and (R) threat.
Use (E) after absorbing Kennen's burst to convert trades in your favor and discourage his poke.
Punish (E) cooldown windows by engaging when he lacks mobility to kite or escape.
Danger windows
Kennen is most dangerous when he has multiple passive marks stacked and (R) ready with flank angles; avoid grouping and extended trades then.
Be cautious when (E) is available as it grants him mobility to engage or disengage quickly.
Tahm Kench is vulnerable when (E) gray health is depleted; avoid trades without shield value to prevent burst damage.
Early game
Use (E) gray health shield to absorb Kennen's poke and stay healthy through early harassment.
Avoid long trades before reaching three passive stacks to prevent Kennen from capitalizing on his ranged advantage.
Step forward for short trades only when (Q) is stacked to slow or stun Kennen and force him to respect your threat.
Power spikes
At level 6, use (R) to isolate Kennen or protect allies, forcing him to respect your pick threat and reducing his teamfight impact.
After your first tank item, increase short trade frequency to leverage improved durability and gray health shielding.
Respect Kennen's level 6 (R) flank potential and avoid grouping to minimize his area stun threat.
Win conditions
Win by forcing short trades that build passive stacks, landing (Q) stuns, and using (E) to absorb Kennen's poke damage.
Use (R) to remove Kennen from fights or save allies from his burst, turning teamfights in your favor.
Deny Kennen calm scaling by punishing his cooldowns and preventing him from safely stacking marks or grouping for (R) engagements.
Tip: For Tahm Kench vs Kennen, read overview, trading pattern, and danger windows first for a fast Top lane check.