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 3 to be safe — 2 if everyone is prepared

At level 40, a party of Whiscash's top six counters needs 1.91 trainers (round up: 2), and a mixed lobby of ranks 13-24 needs 2.34 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 9:02. No level in this range makes it soloable with a prepared party. A duo works from level 40.

Whiscash · Shadow Tier 5

waterground

Weak to

grass

Boss CP: 25,393
Boss HP: 15,000
Raid timer: 300s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Whiscash 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	3(2.58)	3(2.84)	4(3.50)	13:24	5.9
Level 25	3(2.04)	3(2.40)	4(3.02)	11:21	5.9
Level 30	2(1.81)	3(2.10)	3(2.66)	9:55	5.7
Level 35	2(1.77)	3(2.00)	3(2.50)	9:27	5.7
Level 40	2(1.69)	2(1.91)	3(2.34)	9:02	5.6
Level 45	2(1.61)	2(1.81)	3(2.22)	8:33	5.5
Level 50	2(1.57)	2(1.75)	3(2.14)	8:17	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.

2 trainers at level 40

Kartana1.69

A prepared party

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

2 trainers at level 40

Kartana1.69
Zarude1.86
Meowscarada1.93
Rillaboom1.93
Roserade2.01
Shaymin (Sky)2.04

A mixed local group

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

3 trainers at level 40

Xurkitree2.18
Shaymin (Land)2.21
Venusaur2.22
Torterra2.26
Simisage2.28
Celebi2.37

The party these numbers assume

1. Kartana

Razor Leaf + Leaf Blade

2. Zarude

Vine Whip + Power Whip

3. Meowscarada

Leafage + Frenzy Plant

4. Rillaboom

Razor Leaf + Frenzy Plant

5. Roserade

Magical Leaf + Grass Knot

6. Shaymin (Sky)

Magical Leaf + Grass Knot

See the full ranked counter list for Whiscash · 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.