Who counters Tachanka in Rainbow Six Siege?

No single operator hard-counters Tachanka.

Tachanka: counters, combos and tips

Q: What does Tachanka counter?

Montagne, Blitz and Capitão. Montagne: fire around Le Roc forces him back; he's too slow to escape. Blitz: fire forces him off the push. Capitão: fires the smoke-covered plant.

Q: What is Tachanka's gadget?

Shumikha Launcher. Grenade launcher (7-round magazine) of bouncing incendiary rounds that burst 0.75 s after the first bounce into a 1.9 m fire patch lasting 7 s: area denial, plant denial and a hard answer to shields. Not electronic.

Defender · Redhammer · plant denial, anchor, anti-shield, area denial

No operator hard-counters Tachanka; it's countered by good play more than by a single pick. Tachanka counters Montagne, Blitz (fire forces him off the push) and Capitão (fires the smoke-covered plant). Tachanka pairs best with Smoke.

Tachanka's gadget: Shumikha Launcher

Grenade launcher (7-round magazine) of bouncing incendiary rounds that burst 0.75 s after the first bounce into a 1.9 m fire patch lasting 7 s: area denial, plant denial and a hard answer to shields. Not electronic.

Who counters Tachanka?

Nothing in the game's research hard-counters Tachanka.

What does Tachanka counter?

MontagneStrongfire around Le Roc forces him back; he's too slow to escape.
BlitzSituationalfire forces him off the push.
CapitãoSituationalfires the smoke-covered plant.

Best Tachanka combos

SmokeFire and gas.

Tachanka myths

Tachanka's denial is switched off by Thatcher (elec). The Shumikha is a launcher, not an electronic gadget; it must not be tagged elec.

Key Tachanka facts (Y11S3)

Rework replaced the mounted LMG with the Shumikha Launcher (incendiary grenades, DP27 primary). (since Y5S3.3.1 (Nov 17 2020))
Magazine 7 (from 5), fire lasts 7 s (from 5), fuse 0.75 s after first bounce (from 1), fire radius 1.9 m, faster, flatter projectile. No later Shumikha change found through Y11S3. (since Y6S1.3 (patch 6.1.3, May 2021))
Fire on and around a shield forces Montagne or Blitz to back off; Shumikha fire also clears planters from behind Osa's Talon shield.
Shumikha fire over Capitão's micro-smoke cloud stops attackers pushing or planting there.
Shumikha grenades are launched projectiles, not electronics: Thatcher, Twitch, IQ and Brava have nothing to switch off.

Sources

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