Group size estimator
How many trainers do I need to invite?
Invite 4 to be safe — 3 if everyone is prepared
- Boss CP
- 34,200
- 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(4.38) | 5(4.25) | 6(5.00) | 19:32 | 6.0 |
| Level 25 | 4(3.35) | 4(3.39) | 5(4.20) | 15:36 | 6.0 |
| Level 30 | 3(2.99) | 3(2.99) | 4(3.65) | 13:47 | 6.0 |
| Level 35 | 3(2.82) | 3(2.84) | 4(3.51) | 13:05 | 6.0 |
| Level 40 | 3(2.57) | 3(2.68) | 4(3.31) | 12:21 | 6.0 |
| Level 45 | 3(2.50) | 3(2.59) | 4(3.20) | 11:54 | 6.0 |
| Level 50 | 3(2.39) | 3(2.47) | 4(3.08) | 11:22 | 6.0 |
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
- Regieleki2.57
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
3 trainers at level 40
- Regieleki2.57
- Zeraora2.66
- Thundurus (Therian)2.69
- Xurkitree2.70
- Kartana2.73
- Zekrom2.76
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)3.15
- Raikou3.15
- Magnezone3.22
- Zapdos3.25
- Chesnaught3.31
- Roserade3.31
The party these numbers assume
See the full ranked counter list for Seaking · 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.