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 Galarian Farfetch'd's top six counters needs 2.04 trainers (round up: 3), and a mixed lobby of ranks 13-24 needs 2.39 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 9:23. No level in this range makes it soloable with a prepared party. A duo works from level 45.

Galarian Farfetch'd · Elite

fighting

Weak to

flyingpsychicfairy

Boss CP: 30,357
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 Galarian Farfetch'd 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(2.65)	4(3.00)	4(3.50)	13:50	6.0
Level 25	3(2.28)	3(2.49)	3(2.98)	11:29	5.9
Level 30	3(2.10)	3(2.25)	3(2.62)	10:23	5.8
Level 35	3(2.03)	3(2.14)	3(2.51)	9:50	5.6
Level 40	2(1.90)	3(2.04)	3(2.39)	9:23	5.5
Level 45	2(1.83)	2(1.96)	3(2.30)	9:01	5.4
Level 50	2(1.75)	2(1.90)	3(2.22)	8:45	5.2

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

Rayquaza1.90

A prepared party

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

3 trainers at level 40

Rayquaza1.90
Mewtwo1.93
Enamorus (Incarnate)2.01
Galarian Articuno2.11
Hoopa (Unbound)2.13
Tapu Lele2.16

A mixed local group

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

3 trainers at level 40

Toucannon2.25
Salamence2.30
Eternatus2.33
Lugia2.34
Lunala2.37
Staraptor2.37

The party these numbers assume

1. Rayquaza

Air Slash + Dragon Ascent

2. Mewtwo

Confusion + Psystrike

3. Enamorus (Incarnate)

Fairy Wind + Fly

4. Galarian Articuno

Psycho Cut + Fly

5. Hoopa (Unbound)

Confusion + Psychic

6. Tapu Lele

Confusion + Nature's Madness

See the full ranked counter list for Galarian Farfetch'd · 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.