Group size estimator

How many trainers do I need to invite?

The Estimator is already "trainers of this attacker needed to finish inside the timer", so this page does not invent a number: it reads it off the boss's own ranked counter list for three realistic parties and re-simulates each of them at every level from 20 to 50.

Raid bossTierIVsWeatherFriendshipDodgingShadow attackersMega attackersLegendary attackers

Invite 3 to be safe — 3 if everyone is prepared

At level 40, a party of Armarouge's top six counters needs 2.00 trainers (round up: 3), and a mixed lobby of ranks 13-24 needs 2.26 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 9:13. No level in this range makes it soloable with a prepared party. A duo works from level 45.

Armarouge · Tier 5

firepsychic

Weak to

groundrockghostwaterdark

Boss CP: 43,128
Boss HP: 15,000
Raid timer: 300s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Armarouge at each attacker level
Attacker level	Six of the best counter	A prepared party	A mixed local group	Prepared solo time	Faints per timer
Level 20	3(2.37)	3(2.90)	4(3.29)	13:21	6.0
Level 25	3(2.01)	3(2.49)	3(2.82)	11:27	6.0
Level 30	2(1.86)	3(2.22)	3(2.49)	10:12	6.0
Level 35	2(1.69)	3(2.09)	3(2.36)	9:38	6.0
Level 40	2(1.64)	3(2.00)	3(2.26)	9:13	6.0
Level 45	2(1.60)	2(1.91)	3(2.19)	8:48	5.9
Level 50	2(1.53)	2(1.85)	3(2.09)	8:32	5.9

Whole trainers in bold, the raw estimator in brackets — 2.04 means two trainers is right on the line and three is comfortable.

Six of the best counter

Every trainer brings six copies of the single best counter — the theoretical floor.

2 trainers at level 40

Necrozma (Dawn Wings)1.64

A prepared party

Each trainer brings the boss's top six counters, powered up and correctly TM'd.

3 trainers at level 40

Necrozma (Dawn Wings)1.64
Blacephalon2.04
Landorus (Therian)2.07
Inteleon2.08
Darkrai2.08
Kyogre2.11

A mixed local group

Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.

3 trainers at level 40

Tyranitar2.20
Greninja2.22
Dragapult2.22
Glimmora2.23
Chandelure2.24
Rhyperior2.25

The party these numbers assume

1. Necrozma (Dawn Wings)

Shadow Claw + Moongeist Beam

2. Blacephalon

Astonish + Shadow Ball

3. Landorus (Therian)

Mud Shot + Sandsear Storm

4. Inteleon

Water Gun + Hydro Cannon

5. Darkrai

Snarl + Foul Play

6. Kyogre

Waterfall + Origin Pulse

See the full ranked counter list for Armarouge · check a real lobby (win chance, who brings what) · make a share card of the top six

How this is worked out

The boss is ranked once at level 40 with rankCached (the same memoised call /raids makes), then the three bands — rank 1, ranks 1-6, ranks 13-24 — are re-simulated at each attacker level with an 8-run Monte Carlo each. Holding the party fixed and moving only its level is deliberate: it answers "what if my party were level 20" rather than "what would a level-20 player's completely different party be", and it is about ten times cheaper than re-ranking every attacker seven times. The Estimator itself is Pokebattler's definition, time to win including rejoin time divided by the raid timer.