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 5 to be safe — 4 if everyone is prepared

At level 40, a party of Overqwil's top six counters needs 3.75 trainers (round up: 4), and a mixed lobby of ranks 13-24 needs 4.61 (round up: 5). The raid timer is 300 seconds and one prepared trainer alone would take 17:42. No level in this range makes it soloable with a prepared party.

Overqwil · Shadow Tier 5

darkpoison

Weak to

ground

Boss CP: 39,586
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 Overqwil 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	6(5.21)	6(5.69)	8(7.22)	26:52	6.0
Level 25	5(4.59)	5(4.75)	7(6.18)	22:27	6.0
Level 30	4(3.77)	5(4.33)	6(5.22)	20:28	5.9
Level 35	4(3.65)	4(3.97)	5(4.88)	18:45	5.9
Level 40	4(3.54)	4(3.75)	5(4.61)	17:42	5.8
Level 45	4(3.48)	4(3.66)	5(4.46)	17:17	5.8
Level 50	4(3.26)	4(3.49)	5(4.26)	16:29	5.7

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.

4 trainers at level 40

Groudon3.54

A prepared party

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

4 trainers at level 40

Groudon3.54
Eternatus3.58
Necrozma (Dusk Mane)3.76
Zacian (Crowned Sword)3.83
Zamazenta (Crowned Shield)3.87
Garchomp3.91

A mixed local group

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

5 trainers at level 40

Dialga (Origin)4.24
Kyurem (White)4.31
Rhyperior4.34
Krookodile4.49
Landorus (Incarnate)4.76
Kartana4.61

The party these numbers assume

1. Groudon

Mud Shot + Precipice Blades

2. Eternatus

Dragon Tail + Dynamax Cannon

3. Necrozma (Dusk Mane)

Metal Claw + Sunsteel Strike

4. Zacian (Crowned Sword)

Metal Claw + Behemoth Blade

5. Zamazenta (Crowned Shield)

Metal Claw + Behemoth Bash

6. Garchomp

Mud Shot + Earth Power

See the full ranked counter list for Overqwil · 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.