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 — 1 if everyone is prepared

At level 40, a party of Quaxly's top six counters needs 0.93 trainers (round up: 1), and a mixed lobby of ranks 13-24 needs 1.17 (round up: 2). The raid timer is 300 seconds and one prepared trainer alone would take 4:16. A prepared solo becomes possible at level 35. A duo works from level 20.

Quaxly · Tier 5

water

Weak to

grasselectric

Boss CP: 16,616
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 Quaxly 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	2(1.22)	2(1.31)	2(1.64)	6:01	5.8
Level 25	2(1.05)	2(1.13)	2(1.44)	5:11	5.6
Level 30	1(0.96)	2(1.02)	2(1.28)	4:42	5.0
Level 35	1(0.90)	1(0.97)	2(1.22)	4:29	4.5
Level 40	1(0.84)	1(0.93)	2(1.17)	4:16	4.1
Level 45	1(0.82)	1(0.90)	2(1.13)	4:08	3.8
Level 50	1(0.82)	1(0.88)	2(1.09)	4:02	3.4

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.

1 trainer at level 40

Regieleki0.84

A prepared party

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

1 trainer at level 40

Regieleki0.84
Thundurus (Therian)0.92
Zeraora0.94
Kartana0.94
Xurkitree0.95
Zekrom0.97

A mixed local group

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

2 trainers at level 40

Roserade1.12
Raikou1.12
Meowscarada1.13
Necrozma (Dawn Wings)1.13
Magnezone1.16
Zapdos1.16

The party these numbers assume

1. Regieleki

Lock-On + Thunder Cage

2. Thundurus (Therian)

Volt Switch + Wildbolt Storm

3. Zeraora

Volt Switch + Plasma Fists

4. Kartana

Razor Leaf + Leaf Blade

5. Xurkitree

Thunder Shock + Discharge

6. Zekrom

Charge Beam + Fusion Bolt

See the full ranked counter list for Quaxly · 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.