Observed target KO or switch rate is upstream p: the fraction of relevant encounters where the target was knocked out or switched out. Standard error is upstream d. The conservative score is p − 4d. These ladder observations do not prove a set-specific counter.
How to read this table
Use encounter count and standard error to judge the sample. Damage estimates below use inferred sets and remain separate from the observed ladder metric.
#
Checker
Encounters
Conservative score
Target KO or switch rate
01
Terapagos
Normal
DEFENSIVE CHECK
View matchup
26.063
96.8%
Standard error 3.43 points
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Terapagos: 109-130 (28.3 - 33.8%) -- 97% chance to 4HKO after Leftovers recovery
02
Calyrex-Shadow
PsychicGhost
OFFENSIVE CHECK
View matchup
397.376
82.8%
Standard error 3.16 points
▾
252+ SpA Calyrex-Shadow Psyshock vs. 252 HP / 0 Def Ribombee: 259-306 (79.9 - 94.4%) -- guaranteed 2HKO
03
Zacian-Crowned
FairySteel
OFFENSIVE CHECK
View matchup
89.066
88.2%
Standard error 4.83 points
▾
+1 252+ Atk Zacian-Crowned Iron Head vs. 252 HP / 0 Def Ribombee: 726-854 (224 - 263.5%) -- guaranteed OHKO
04
Iron Treads
GroundSteel
DEFENSIVE CHECK
View matchup
143.954
81.6%
Standard error 4.40 points
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Iron Treads: 62-73 (16.1 - 19%) -- possible 8HKO
05
Arceus
Normal
DEFENSIVE CHECK
View matchup
241.311
79.1%
Standard error 4.25 points
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Arceus: 88-105 (19.8 - 23.6%) -- possible 5HKO
06
Arceus-Ground
Ground
DEFENSIVE CHECK
View matchup
177.531
77.9%
Standard error 5.06 points
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Arceus-Ground: 88-105 (19.8 - 23.6%) -- possible 5HKO
07
Kyogre
Water
DEFENSIVE CHECK
View matchup
27.549
83.9%
Standard error 7.00 points
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Kyogre: 78-93 (19.3 - 23%) -- possible 5HKO
08
Necrozma-Dusk-Mane
PsychicSteel
OFFENSIVE CHECK
View matchup
24.082
81.7%
Standard error 7.87 points
▾
252+ Atk Necrozma-Dusk-Mane Sunsteel Strike vs. 252 HP / 0 Def Ribombee: 626-738 (193.2 - 227.7%) -- guaranteed OHKO
09
Ho-Oh
FireFlying
DEFENSIVE CHECK
View matchup
295.443
66.7%
Standard error 4.65 points
▾
252+ SpA Ribombee Psychic Noise vs. 252 HP / 252+ SpD Ho-Oh: 39-46 (9.3 - 11%)
10
Koraidon
FightingDragon
OFFENSIVE CHECK
View matchup
389.048
59.7%
Standard error 4.13 points
▾
252+ Atk Orichalcum Pulse Koraidon Flare Blitz vs. 252 HP / 0 Def Ribombee in Sun: 892-1050 (275.3 - 324%) -- guaranteed OHKO
11
Calyrex-Ice
PsychicIce
DEFENSIVE CHECK
View matchup
37.277
71.7%
Standard error 7.37 points
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Calyrex-Ice: 84-99 (20.7 - 24.5%) -- guaranteed 5HKO
12
Eternatus
PoisonDragon
OFFENSIVE CHECK
View matchup
31.846
72.3%
Standard error 7.93 points
▾
252+ SpA Eternatus Sludge Bomb vs. 252 HP / 252+ SpD Ribombee: 318-374 (98.1 - 115.4%) -- 87.5% chance to OHKO
13
Arceus-Fairy
Fairy
DEFENSIVE CHECK
View matchup
23.399
75.4%
Standard error 8.91 points
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Arceus-Fairy: 88-105 (19.8 - 23.6%) -- possible 5HKO
14
Kingambit
DarkSteel
DEFENSIVE CHECK
View matchup
26.763
69.9%
Standard error 8.86 points
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Kingambit: 109-130 (26.9 - 32.1%) -- guaranteed 4HKO
15
Miraidon
ElectricDragon
SOFT CHECK
View matchup
434.052
45.7%
Standard error 4.00 points
▾
252+ SpA Hadron Engine Miraidon Overheat vs. 252 HP / 252+ SpD Ribombee: 384-454 (118.5 - 140.1%) -- guaranteed OHKO
16
Clodsire
PoisonGround
DEFENSIVE CHECK
View matchup
122.283
58.8%
Standard error 7.59 points
▾
252+ SpA Ribombee Psychic Noise vs. 252 HP / 252+ SpD Clodsire: 104-124 (22.4 - 26.7%) -- 25.6% chance to 4HKO
17
Ditto
Normal
SOFT CHECK
View matchup
108.817
51.6%
Standard error 6.52 points
▾
Ditto vs. Ribombee: 0-0 (0 - 0%)
18
Glimmora
RockPoison
SOFT CHECK
View matchup
206.19
45.7%
Standard error 5.79 points
▾
0- SpA Glimmora Power Gem vs. 252 HP / 252+ SpD Ribombee: 176-210 (54.3 - 64.8%) -- guaranteed 2HKO
19
Ribombee
BugFairy
SOFT CHECK
View matchup
116.722
46.3%
Standard error 6.43 points
▾
252+ SpA Ribombee Moonblast vs. 252 HP / 252+ SpD Ribombee: 124-147 (38.2 - 45.3%) -- guaranteed 3HKO
20
Smeargle
Normal
SOFT CHECK
View matchup
169.044
47.0%
Standard error 6.62 points
▾
252+ Atk Smeargle Nuzzle vs. 252 HP / 0 Def Ribombee: 15-18 (4.6 - 5.5%)
21
Flutter Mane
GhostFairy
SOFT CHECK
View matchup
38.337
50.4%
Standard error 8.08 points
▾
252+ SpA Flutter Mane Power Gem vs. 252 HP / 252+ SpD Ribombee: 178-210 (54.9 - 64.8%) -- guaranteed 2HKO
22
Chien-Pao
DarkIce
SOFT CHECK
View matchup
27.48
54.5%
Standard error 9.50 points
▾
252+ Atk Sword of Ruin Chien-Pao Icicle Crash vs. 252 HP / 0 Def Ribombee: 291-343 (89.8 - 105.8%) -- 37.5% chance to OHKO
23
Corviknight
FlyingSteel
SOFT CHECK
View matchup
20.756
54.4%
Standard error 10.93 points
▾
252+ Atk Corviknight Brave Bird vs. 252 HP / 0 Def Ribombee: 494-584 (152.4 - 180.2%) -- guaranteed OHKO
24
Hatterene
PsychicFairy
SOFT CHECK
View matchup
125.532
39.2%
Standard error 7.36 points
▾
252+ SpA Hatterene Misty Explosion vs. 252 HP / 252+ SpD Ribombee: 168-198 (51.8 - 61.1%) -- guaranteed 2HKO
25
Ting-Lu
DarkGround
SOFT CHECK
View matchup
78.778
34.5%
Standard error 7.44 points
▾
252+ Atk Ting-Lu Stone Edge vs. 252 HP / 0 Def Ribombee: 322-380 (99.3 - 117.2%) -- 93.8% chance to OHKO
26
Gliscor
GroundFlying
SOFT CHECK
View matchup
142.107
27.6%
Standard error 6.42 points
▾
252+ Atk Gliscor Earthquake vs. 252 HP / 0 Def Ribombee: 109-129 (33.6 - 39.8%) -- guaranteed 3HKO
27
Deoxys-Speed
Psychic
SOFT CHECK
View matchup
68.807
28.6%
Standard error 7.62 points
▾
252+ SpA Deoxys-Speed Psycho Boost vs. 252 HP / 252+ SpD Ribombee: 183-216 (56.4 - 66.6%) -- guaranteed 2HKO
28
Grimmsnarl
DarkFairy
SOFT CHECK
View matchup
42.445
20.9%
Standard error 6.24 points
▾
252+ Atk Grimmsnarl Play Rough vs. 252 HP / 0 Def Ribombee: 231-273 (71.2 - 84.2%) -- guaranteed 2HKO
Ranked #15 with 9.82% usage. Sorted by conservative score.