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 Crabominable's top six counters needs 2.07 trainers (round up: 3), and a mixed lobby of ranks 13-24 needs 2.64 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 9:31. No level in this range makes it soloable with a prepared party. A duo works from level 45.

Crabominable · Elite

fightingice

Weak to

fightingflyingsteelfirepsychicfairy

Boss CP: 43,032
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 Crabominable 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(2.62)	4(3.12)	4(3.99)	14:22	6.0
Level 25	3(2.31)	3(2.65)	4(3.34)	12:11	6.0
Level 30	3(2.04)	3(2.29)	3(2.93)	10:33	6.0
Level 35	2(1.98)	3(2.17)	3(2.79)	9:58	6.0
Level 40	2(1.83)	3(2.07)	3(2.64)	9:31	6.0
Level 45	2(1.80)	2(1.99)	3(2.54)	9:10	6.0
Level 50	2(1.73)	2(1.91)	3(2.44)	8:46	6.0

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

Zamazenta (Crowned Shield)1.83

A prepared party

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

3 trainers at level 40

Zamazenta (Crowned Shield)1.83
Zacian (Crowned Sword)1.87
Necrozma (Dusk Mane)2.01
Keldeo2.13
Mewtwo2.27
Rayquaza2.30

A mixed local group

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

3 trainers at level 40

Salamence2.53
Galarian Zapdos2.55
Kyurem (White)2.56
Moltres2.60
Lucario2.59
Enamorus (Therian)2.59

The party these numbers assume

1. Zamazenta (Crowned Shield)

Metal Claw + Behemoth Bash

2. Zacian (Crowned Sword)

Metal Claw + Behemoth Blade

3. Necrozma (Dusk Mane)

Psycho Cut + Sunsteel Strike

4. Keldeo

Low Kick + Secret Sword

5. Mewtwo

Psycho Cut + Psystrike

6. Rayquaza

Air Slash + Dragon Ascent

See the full ranked counter list for Crabominable · 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.