Group size estimator
How many trainers do I need to invite?
Invite 5 to be safe — 4 if everyone is prepared
- Boss CP
- 54,513
- Boss HP
- 20,000
- Raid timer
- 300s
- Party used
- 6
Trainers needed, by attacker level
Scroll sideways for the mixed-lobby column.
| Attacker level | Six of the best counter | A prepared party | A mixed local group | Prepared solo time | Faints per timer |
|---|---|---|---|---|---|
| Level 20 | 6(5.51) | 6(5.77) | 8(7.30) | 26:34 | 6.0 |
| Level 25 | 5(4.75) | 5(4.91) | 6(5.82) | 22:36 | 6.0 |
| Level 30 | 5(4.51) | 5(4.27) | 5(5.00) | 19:39 | 6.0 |
| Level 35 | 3(2.99) | 4(3.88) | 5(4.57) | 17:51 | 6.0 |
| Level 40 | 3(2.91) | 4(3.73) | 5(4.25) | 17:10 | 5.9 |
| Level 45 | 3(2.78) | 4(3.53) | 5(4.08) | 16:13 | 5.9 |
| Level 50 | 3(2.75) | 4(3.46) | 4(3.94) | 15:55 | 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.
3 trainers at level 40
- Necrozma (Dawn Wings)2.91
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
4 trainers at level 40
- Necrozma (Dawn Wings)2.91
- Darkrai3.64
- Hydreigon3.90
- Tyranitar3.91
- Lunala3.97
- Kingambit4.05
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
5 trainers at level 40
- Chandelure4.13
- Gholdengo4.18
- Dragapult4.19
- Salamence4.20
- Incineroar4.22
- Volcarona4.23
The party these numbers assume
See the full ranked counter list for Necrozma · 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.