Group size estimator
How many trainers do I need to invite?
Invite 4 to be safe — 3 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 | 4(3.55) | 5(4.00) | 6(5.58) | 18:25 | 5.9 |
| Level 25 | 4(3.02) | 4(3.44) | 5(4.72) | 15:49 | 5.8 |
| Level 30 | 3(2.81) | 4(3.08) | 5(4.20) | 14:10 | 5.7 |
| Level 35 | 3(2.59) | 3(2.92) | 5(4.03) | 13:25 | 5.5 |
| Level 40 | 3(2.51) | 3(2.79) | 4(3.81) | 12:51 | 5.4 |
| Level 45 | 3(2.45) | 3(2.70) | 4(3.70) | 12:24 | 5.4 |
| Level 50 | 3(2.30) | 3(2.59) | 4(3.59) | 11:54 | 5.2 |
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
- Zacian (Crowned Sword)2.51
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
3 trainers at level 40
- Zacian (Crowned Sword)2.51
- Necrozma (Dusk Mane)2.55
- Zamazenta (Crowned Shield)2.61
- Blacephalon2.89
- Keldeo2.98
- Lucario3.21
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
4 trainers at level 40
- Necrozma (Dawn Wings)3.66
- Dialga (Origin)3.70
- Heatran3.74
- Chandelure3.73
- Eternatus3.82
- Glimmora3.83
The party these numbers assume
See the full ranked counter list for Silvally (Ice) · 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.