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PoGoBud

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.

Invite 3 to be safe — 3 if everyone is prepared

At level 40, a party of Bronzong's top six counters needs 2.16 trainers (round up: 3), and a mixed lobby of ranks 13-24 needs 2.57 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 9:57. No level in this range makes it soloable with a prepared party.
Bronzong · Tier 5
steelpsychic
Weak to
groundghostfiredark
Boss CP
32,548
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 Bronzong at each attacker level
Attacker levelSix of the best counterA prepared partyA mixed local groupPrepared solo timeFaints per timer
Level 203(2.94)4(3.24)4(3.68)14:556.0
Level 253(2.30)3(2.70)4(3.20)12:266.0
Level 303(2.12)3(2.41)3(2.85)11:055.9
Level 352(1.94)3(2.26)3(2.72)10:255.9
Level 402(1.86)3(2.16)3(2.57)9:575.9
Level 452(1.82)3(2.07)3(2.49)9:325.9
Level 502(1.74)3(2.01)3(2.40)9:155.8

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.

2 trainers at level 40

  • Necrozma (Dawn Wings)1.86

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)1.86
  • Blacephalon2.04
  • Landorus (Therian)2.15
  • Reshiram2.17
  • Darkrai2.31
  • Chandelure2.45

A mixed local group

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

3 trainers at level 40

  • Ho-Oh2.50
  • Absol2.51
  • Giratina (Origin)2.51
  • Tyranitar2.53
  • Dragapult2.55
  • Darmanitan (Standard)2.54

The party these numbers assume

1. Necrozma (Dawn Wings)
Shadow Claw + Moongeist Beam
2. Blacephalon
Astonish + Mind Blown
3. Landorus (Therian)
Mud Shot + Sandsear Storm
4. Reshiram
Fire Fang + Fusion Flare
5. Darkrai
Snarl + Foul Play
6. Chandelure
Fire Spin + Shadow Ball

See the full ranked counter list for Bronzong · 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.