Group size estimator
How many trainers do I need to invite?
Invite 4 to be safe — 3 if everyone is prepared
- Boss CP
- 20,280
- Boss HP
- 15,000
- 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(3.36) | 5(4.11) | 5(4.83) | 19:26 | 6.0 |
| Level 25 | 4(3.12) | 4(3.44) | 5(4.14) | 16:16 | 6.0 |
| Level 30 | 3(2.75) | 4(3.05) | 4(3.72) | 14:25 | 5.9 |
| Level 35 | 3(2.51) | 3(2.87) | 4(3.59) | 13:34 | 5.9 |
| Level 40 | 3(2.41) | 3(2.76) | 4(3.38) | 13:03 | 5.8 |
| Level 45 | 3(2.37) | 3(2.64) | 4(3.22) | 12:28 | 5.8 |
| Level 50 | 3(2.31) | 3(2.56) | 4(3.10) | 12:05 | 5.8 |
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
- Keldeo2.41
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
3 trainers at level 40
- Keldeo2.41
- Kyurem (White)2.53
- Kyurem (Black)2.86
- Terrakion2.93
- Lucario2.91
- Kartana2.94
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
4 trainers at level 40
- Zamazenta (Crowned Shield)3.27
- Rillaboom3.27
- Zarude3.30
- Urshifu (Rapid Strike)3.29
- Urshifu (Single Strike)3.29
- Breloom3.40
The party these numbers assume
See the full ranked counter list for Diggersby · 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.