Group size estimator

How many trainers do I need to invite?

The Estimator is already "trainers of this attacker needed to finish inside the timer", so this page does not invent a number: it reads it off the boss's own ranked counter list for three realistic parties and re-simulates each of them at every level from 20 to 50.

Raid bossTierIVsWeatherFriendshipDodgingShadow attackersMega attackersLegendary attackers

Invite 2 to be safe — 2 if everyone is prepared

At level 40, a party of Darmanitan (Standard)'s top six counters needs 1.00 trainers (round up: 2), and a mixed lobby of ranks 13-24 needs 1.17 (round up: 2). The raid timer is 180 seconds and one prepared trainer alone would take 2:56. A prepared solo becomes possible at level 45. A duo works from level 20.

Darmanitan (Standard) · Shadow Tier 3

fire

Weak to

groundrockwater

Boss CP: 19,969
Boss HP: 4,000
Raid timer: 180s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Darmanitan (Standard) at each attacker level
Attacker level	Six of the best counter	A prepared party	A mixed local group	Prepared solo time	Faints per timer
Level 20	2(1.30)	2(1.57)	2(1.77)	4:36	6.0
Level 25	2(1.21)	2(1.32)	2(1.48)	3:52	6.0
Level 30	2(1.13)	2(1.14)	2(1.31)	3:21	5.9
Level 35	2(1.02)	2(1.07)	2(1.22)	3:08	5.9
Level 40	1(0.97)	2(1.00)	2(1.17)	2:56	5.7
Level 45	1(0.95)	1(0.97)	2(1.11)	2:50	5.6
Level 50	1(0.89)	1(0.92)	2(1.07)	2:41	5.4

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.

1 trainer at level 40

Landorus (Therian)0.97

A prepared party

Each trainer brings the boss's top six counters, powered up and correctly TM'd.

2 trainers at level 40

Landorus (Therian)0.97
Groudon0.98
Kyogre1.02
Glimmora1.01
Inteleon1.01
Eternatus1.02

A mixed local group

Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.

2 trainers at level 40

Garchomp1.13
Greninja1.13
Samurott1.13
Clawitzer1.15
Swampert1.15
Landorus (Incarnate)1.18

The party these numbers assume

1. Landorus (Therian)

Mud Shot + Sandsear Storm

2. Groudon

Mud Shot + Precipice Blades

3. Kyogre

Waterfall + Origin Pulse

4. Glimmora

Rock Throw + Meteor Beam

5. Inteleon

Water Gun + Hydro Cannon

6. Eternatus

Poison Jab + Dynamax Cannon

See the full ranked counter list for Darmanitan (Standard) · 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.