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 2 to be safe — 2 if everyone is prepared

At level 40, a party of Quaquaval's top six counters needs 1.61 trainers (round up: 2), and a mixed lobby of ranks 13-24 needs 1.82 (round up: 2). The raid timer is 300 seconds and one prepared trainer alone would take 7:25. No level in this range makes it soloable with a prepared party. A duo works from level 30.

Quaquaval · Tier 5

waterfighting

Weak to

flyinggrasselectricpsychicfairy

Boss CP: 40,550
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 Quaquaval 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(2.13)	3(2.37)	3(2.64)	10:54	6.0
Level 25	2(1.83)	3(2.04)	3(2.25)	9:22	6.0
Level 30	2(1.63)	2(1.77)	3(2.01)	8:08	6.0
Level 35	2(1.55)	2(1.68)	2(1.92)	7:43	6.0
Level 40	2(1.50)	2(1.61)	2(1.82)	7:25	6.0
Level 45	2(1.44)	2(1.54)	2(1.76)	7:06	6.0
Level 50	2(1.39)	2(1.48)	2(1.71)	6:48	5.9

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

Rayquaza1.50

A prepared party

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

2 trainers at level 40

Rayquaza1.50
Mewtwo1.53
Enamorus (Incarnate)1.63
Regieleki1.66
Thundurus (Therian)1.68
Hoopa (Unbound)1.68

A mixed local group

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

2 trainers at level 40

Enamorus (Therian)1.79
Yveltal1.79
Necrozma (Dawn Wings)1.80
Toucannon1.81
Shaymin (Sky)1.80
Tapu Koko1.81

The party these numbers assume

1. Rayquaza

Air Slash + Dragon Ascent

2. Mewtwo

Confusion + Psystrike

3. Enamorus (Incarnate)

Fairy Wind + Fly

4. Regieleki

Thunder Shock + Thunder Cage

5. Thundurus (Therian)

Volt Switch + Wildbolt Storm

6. Hoopa (Unbound)

Confusion + Psychic

See the full ranked counter list for Quaquaval · 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.