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 4 to be safe — 3 if everyone is prepared

At level 40, a party of Pecharunt's top six counters needs 2.53 trainers (round up: 3), and a mixed lobby of ranks 13-24 needs 3.05 (round up: 4). The raid timer is 300 seconds and one prepared trainer alone would take 11:38. No level in this range makes it soloable with a prepared party.

Pecharunt · Tier 5

poisonghost

Weak to

groundghostpsychicdark

Boss CP: 35,553
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 Pecharunt 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	4(3.97)	4(3.80)	5(4.52)	17:29	6.0
Level 25	4(3.07)	4(3.26)	4(3.81)	15:01	6.0
Level 30	3(2.51)	3(2.86)	4(3.38)	13:09	6.0
Level 35	3(2.21)	3(2.67)	4(3.23)	12:17	6.0
Level 40	3(2.17)	3(2.53)	4(3.05)	11:38	6.0
Level 45	3(2.05)	3(2.43)	3(2.97)	11:12	6.0
Level 50	2(1.94)	3(2.35)	3(2.84)	10:48	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.

3 trainers at level 40

Necrozma (Dawn Wings)2.17

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)2.17
Mewtwo2.41
Landorus (Therian)2.58
Hoopa (Unbound)2.61
Darkrai2.66
Groudon2.74

A mixed local group

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

4 trainers at level 40

Hisuian Zoroark2.98
Kingambit3.02
Garchomp3.03
Latios3.02
Zamazenta (Crowned Shield)3.04
Absol3.04

The party these numbers assume

1. Necrozma (Dawn Wings)

Psycho Cut + Moongeist Beam

2. Mewtwo

Psycho Cut + Psystrike

3. Landorus (Therian)

Extrasensory + Sandsear Storm

4. Hoopa (Unbound)

Confusion + Psychic

5. Darkrai

Snarl + Foul Play

6. Groudon

Mud Shot + Precipice Blades

See the full ranked counter list for Pecharunt · 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.