Tahm Kench should focus on durable short trades to build passive stacks and threaten Olaf with (Q) stun and (R) control.
Manage lane pressure by denying Olaf extended melee fights and avoiding giving him space to stack (Q) slows for long trades.
This is a control vs snowball matchup where Tahm Kench must survive Olaf's early aggression and leverage his tank durability to outlast Olaf's all-ins.
Trading pattern
Engage in repeated short trades to build three passive stacks, then land (Q) to stun Olaf and follow up with (E) to absorb his retaliation.
Punish Olaf's missed (Q) axes by stepping forward aggressively before he can reset cooldown.
Avoid fighting when passive stacks are low or (E) gray health shield is depleted to prevent Olaf's sustained damage from overwhelming you.
Danger windows
Olaf is most dangerous when he lands (Q) and can pick it up to extend fights; avoid prolonged trades in this window.
Be cautious when (R) is active, as he ignores crowd control and can commit to all-ins; use (R) defensively if needed.
Tahm Kench is vulnerable when (E) gray health shield is down and passive stacks are not built; avoid trades during these moments.
Early game
Use (E) gray health shield to absorb Olaf's early (E) true damage and extended trades.
Build passive stacks through short melee contact and avoid prolonged fights where Olaf can pick up (Q) axes repeatedly.
Respect Olaf's early (Q) slow and avoid engaging without (E) shield value or (Q) stacks ready to punish.
Power spikes
At level 6, use (R) to isolate Olaf or protect yourself from his all-in, forcing him to respect your (R) threat.
After your first tank item, take more short trades to convert passive stacks into lane control with improved durability.
Respect Olaf's level 6 (R) crowd control immunity and his first fighter item spike by avoiding extended fights and disengaging when his (Q) axes land.
Win conditions
Win the lane by consistently landing (Q) stuns at full passive stacks and absorbing Olaf's damage with (E) to make trades inefficient.
Use (R) to isolate Olaf from minion waves or (R) him to deny his all-in attempts.
Maintain lane control by forcing Olaf to miss (Q) axes and punishing cooldowns to prevent his snowball potential.
Tip: For Tahm Kench vs Olaf, read overview, trading pattern, and danger windows first for a fast Top lane check.