Group size estimator
How many trainers do I need to invite?
Invite 3 to be safe — 3 if everyone is prepared
- Boss CP
- 50,013
- 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(3.28) | 4(3.44) | 4(3.98) | 15:49 | 6.0 |
| Level 25 | 3(2.92) | 3(3.00) | 4(3.43) | 13:48 | 5.6 |
| Level 30 | 3(2.38) | 3(2.73) | 4(3.12) | 12:33 | 5.3 |
| Level 35 | 3(2.36) | 3(2.57) | 3(2.99) | 11:49 | 5.0 |
| Level 40 | 3(2.29) | 3(2.49) | 3(2.84) | 11:27 | 4.9 |
| Level 45 | 3(2.18) | 3(2.42) | 3(2.76) | 11:07 | 4.6 |
| Level 50 | 3(2.04) | 3(2.33) | 3(2.68) | 10:44 | 4.3 |
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
- Pheromosa2.29
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
3 trainers at level 40
- Pheromosa2.29
- Volcarona2.44
- Kartana2.50
- Genesect2.56
- Genesect (Burn)2.56
- Genesect (Chill)2.56
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
3 trainers at level 40
- Scizor2.71
- Pinsir2.73
- Escavalier2.75
- Keldeo2.75
- Yanmega2.77
- Kyurem (White)2.85
The party these numbers assume
See the full ranked counter list for Brute Bonnet · 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.