Group size estimator
How many trainers do I need to invite?
Invite 5 to be safe — 4 if everyone is prepared
- Boss CP
- 43,962
- 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 | 5(4.12) | 6(5.04) | 6(5.80) | 23:12 | 6.0 |
| Level 25 | 4(3.47) | 5(4.42) | 6(5.01) | 20:20 | 6.0 |
| Level 30 | 4(3.17) | 4(3.91) | 5(4.48) | 18:00 | 5.8 |
| Level 35 | 3(2.86) | 4(3.75) | 5(4.26) | 17:15 | 5.8 |
| Level 40 | 3(2.82) | 4(3.58) | 5(4.06) | 16:27 | 5.7 |
| Level 45 | 3(2.75) | 4(3.44) | 4(3.92) | 15:49 | 5.6 |
| Level 50 | 3(2.65) | 4(3.35) | 4(3.79) | 15:25 | 5.5 |
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)2.82
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)2.82
- Blacephalon3.47
- Darkrai3.73
- Chandelure3.77
- Eternatus3.82
- Lunala3.85
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
5 trainers at level 40
- Kyurem (Black)3.95
- Gengar3.96
- Hisuian Zoroark3.94
- Kingambit4.02
- Zacian (Crowned Sword)4.02
- Volcarona4.04
The party these numbers assume
See the full ranked counter list for Silvally (Psychic) · 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.