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 — 2 if everyone is prepared

At level 40, a party of Electrike's top six counters needs 1.67 trainers (round up: 2), and a mixed lobby of ranks 13-24 needs 2.10 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 7:40. No level in this range makes it soloable with a prepared party. A duo works from level 30.

Electrike · Elite

electric

Weak to

ground

Boss CP: 18,820
Boss HP: 20,000
Raid timer: 300s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Electrike 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(2.10)	3(2.33)	3(2.95)	10:44	5.6
Level 25	2(1.83)	3(2.05)	3(2.56)	9:26	5.3
Level 30	2(1.62)	2(1.84)	3(2.30)	8:29	4.8
Level 35	2(1.55)	2(1.76)	3(2.20)	8:05	4.6
Level 40	2(1.46)	2(1.67)	3(2.10)	7:40	4.3
Level 45	2(1.42)	2(1.62)	3(2.03)	7:28	4.1
Level 50	2(1.41)	2(1.58)	2(1.97)	7:15	4.0

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

Landorus (Therian)1.46

A prepared party

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

2 trainers at level 40

Landorus (Therian)1.46
Groudon1.61
Eternatus1.69
Necrozma (Dawn Wings)1.72
Excadrill1.75
Garchomp1.77

A mixed local group

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

3 trainers at level 40

Krookodile1.99
Rhydon2.01
Keldeo2.03
Kyurem (White)2.03
Donphan2.09
Mudsdale2.09

The party these numbers assume

1. Landorus (Therian)

Mud Shot + Sandsear Storm

2. Groudon

Mud Shot + Precipice Blades

3. Eternatus

Poison Jab + Dynamax Cannon

4. Necrozma (Dawn Wings)

Psycho Cut + Moongeist Beam

5. Excadrill

Mud-Slap + Scorching Sands

6. Garchomp

Mud Shot + Earth Power

See the full ranked counter list for Electrike · 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.