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 Charmeleon's top six counters needs 2.58 trainers (round up: 3), and a mixed lobby of ranks 13-24 needs 2.95 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 12:10. No level in this range makes it soloable with a prepared party.

Charmeleon · Shadow Tier 5

fire

Weak to

groundrockwater

Boss CP: 25,159
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 Charmeleon 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(3.56)	4(3.69)	5(4.10)	17:26	6.0
Level 25	4(3.08)	4(3.21)	4(3.61)	15:09	6.0
Level 30	3(2.58)	3(2.88)	4(3.28)	13:35	6.0
Level 35	3(2.53)	3(2.66)	4(3.13)	12:35	5.9
Level 40	3(2.44)	3(2.58)	3(2.95)	12:10	5.9
Level 45	3(2.37)	3(2.48)	3(2.85)	11:43	5.9
Level 50	3(2.32)	3(2.42)	3(2.77)	11:26	5.8

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

Landorus (Therian)2.44

A prepared party

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

3 trainers at level 40

Landorus (Therian)2.44
Inteleon2.48
Groudon2.59
Rampardos2.61
Kyogre2.62
Glimmora2.72

A mixed local group

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

3 trainers at level 40

Garchomp2.83
Tyrantrum2.86
Volcanion2.89
Gigalith2.92
Terrakion2.92
Necrozma (Dawn Wings)2.95

The party these numbers assume

1. Landorus (Therian)

Mud Shot + Sandsear Storm

2. Inteleon

Water Gun + Hydro Cannon

3. Groudon

Mud Shot + Precipice Blades

4. Rampardos

Smack Down + Rock Slide

5. Kyogre

Waterfall + Origin Pulse

6. Glimmora

Rock Throw + Meteor Beam

See the full ranked counter list for Charmeleon · 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.