Reliability ranks observed matchups; KO rate is how often the checker knocked out or forced out the target. “Checker faints” reports the checker's own observed death rate. Categories use matchup reliability plus offensive and defensive base stats.
How to read this table
Use encounter count to judge sample size. A high-reliability check with a modest KO rate can still be useful when it consistently forces switches or limits the target.
#
Checker
Encounters
Reliability
KO Rate
01
Iron Valiant
FairyFighting
OFFENSIVE CHECK
128.072
76.3%
checker faints 6.33%
▾
252+ Atk Iron Valiant Close Combat vs. 252 HP / 0 Def Kyurem: 470-554 (103.5 - 122%) -- guaranteed OHKO
02
Charizard-Mega-X
FireDragon
OFFENSIVE CHECK
102.212
76.2%
checker faints 7.07%
▾
252+ Atk Tough Claws Charizard-Mega-X Outrage vs. 252 HP / 0 Def Kyurem: 612-722 (134.8 - 159%) -- guaranteed OHKO
03
Diancie-Mega
RockFairy
OFFENSIVE CHECK
114.155
75.4%
checker faints 6.79%
▾
0- Atk Diancie-Mega Diamond Storm vs. 252 HP / 0 Def Kyurem: 320-378 (70.4 - 83.2%) -- guaranteed 2HKO after Leftovers recovery
04
Scizor-Mega
BugSteel
OFFENSIVE CHECK
158.022
74.8%
checker faints 5.88%
▾
252+ Atk Scizor-Mega Close Combat vs. 252 HP / 0 Def Kyurem: 350-412 (77 - 90.7%) -- guaranteed 2HKO after Leftovers recovery
05
Volcarona
BugFire
OFFENSIVE CHECK
116.624
69.4%
checker faints 5.95%
▾
252+ SpA Volcarona Bug Buzz vs. 252 HP / 252+ SpD Kyurem: 129-153 (28.4 - 33.7%) -- 94.8% chance to 4HKO after Leftovers recovery
06
Zamazenta
Fighting
OFFENSIVE CHECK
285.121
69.4%
checker faints 4.58%
▾
252+ Atk Zamazenta Close Combat vs. 252 HP / 0 Def Kyurem: 444-524 (97.7 - 115.4%) -- 87.5% chance to OHKO
07
Kingambit
DarkSteel
DEFENSIVE COUNTER
310.695
65.8%
checker faints 4.44%
▾
252+ SpA Kyurem Earth Power vs. 252 HP / 252+ SpD Kingambit: 172-204 (42.5 - 50.4%) -- 1.2% chance to 2HKO
08
Tapu Lele
PsychicFairy
OFFENSIVE CHECK
145.62
65.7%
checker faints 6.61%
▾
252+ SpA Tapu Lele Moonblast vs. 252 HP / 252+ SpD Kyurem: 264-312 (58.1 - 68.7%) -- guaranteed 2HKO after Leftovers recovery
09
Tyranitar-Mega
RockDark
DEFENSIVE COUNTER
147.173
64.0%
checker faints 6.75%
▾
252+ SpA Kyurem Earth Power vs. 252 HP / 252+ SpD Tyranitar-Mega in Sand: 92-110 (22.7 - 27.2%) -- 50% chance to 4HKO
10
Lopunny-Mega
NormalFighting
OFFENSIVE CHECK
40.9
62.7%
checker faints 7.56%
▾
252+ Atk Lopunny-Mega Close Combat vs. 252 HP / 0 Def Kyurem: 488-576 (107.4 - 126.8%) -- guaranteed OHKO
11
Latios-Mega
DragonPsychic
OFFENSIVE CHECK
45.675
58.4%
checker faints 7.29%
▾
252+ SpA Latios-Mega Draco Meteor vs. 252 HP / 252+ SpD Kyurem: 422-498 (92.9 - 109.6%) -- 56.3% chance to OHKO
12
Charizard-Mega-Y
FireFlying
OFFENSIVE CHECK
133.837
57.7%
checker faints 7.12%
▾
252+ SpA Charizard-Mega-Y Overheat vs. 252 HP / 252+ SpD Kyurem in Sun: 313-370 (68.9 - 81.4%) -- guaranteed 2HKO after Leftovers recovery
13
Melmetal
Steel
DEFENSIVE COUNTER
172.79
57.6%
checker faints 6.27%
▾
252+ SpA Kyurem Earth Power vs. 252 HP / 252+ SpD Melmetal: 204-240 (43 - 50.6%) -- 2% chance to 2HKO
14
Hoopa-Unbound
PsychicDark
SOFT CHECK
28.372
54.9%
checker faints 9.34%
▾
252+ Atk Hoopa-Unbound Drain Punch vs. 252 HP / 0 Def Kyurem: 230-272 (50.6 - 59.9%) -- 85.9% chance to 2HKO after Leftovers recovery
15
Garchomp
DragonGround
SOFT CHECK
106.756
52.7%
checker faints 8.03%
▾
252+ Atk Garchomp Outrage vs. 252 HP / 0 Def Kyurem: 470-554 (103.5 - 122%) -- guaranteed OHKO
16
Blissey
Normal
SOFT CHECK
46.962
52.1%
checker faints 7.29%
▾
Blissey Seismic Toss vs. 252 HP Kyurem: 100-100 (22 - 22%) -- guaranteed 6HKO after Leftovers recovery
17
Tyranitar
RockDark
SOFT CHECK
65.822
51.0%
checker faints 8.64%
▾
252+ Atk Choice Band Tyranitar Stone Edge vs. 252 HP / 0 Def Kyurem: 600-708 (132.1 - 155.9%) -- guaranteed OHKO
18
Clefable
Fairy
SOFT CHECK
149.016
49.7%
checker faints 6.86%
▾
252+ SpA Clefable Moonblast vs. 252 HP / 252+ SpD Kyurem: 212-252 (46.6 - 55.5%) -- 15.6% chance to 2HKO after Leftovers recovery
19
Keldeo
WaterFighting
SOFT CHECK
120.489
49.5%
checker faints 7.62%
▾
252+ SpA Keldeo Secret Sword vs. 252 HP / 0 Def Kyurem: 332-392 (73.1 - 86.3%) -- guaranteed 2HKO after Leftovers recovery
20
Kyurem
DragonIce
SOFT CHECK
131.332
48.1%
checker faints 6.09%
▾
252+ SpA Kyurem Ice Beam vs. 252 HP / 252+ SpD Kyurem: 126-148 (27.7 - 32.5%) -- 77% chance to 4HKO after Leftovers recovery
21
Venusaur-Mega
GrassPoison
SOFT CHECK
130.86
47.9%
checker faints 7.25%
▾
252+ SpA Venusaur-Mega Sludge Bomb vs. 252 HP / 252+ SpD Kyurem: 120-142 (26.4 - 31.2%) -- 17% chance to 4HKO after Leftovers recovery
22
Hatterene
PsychicFairy
SOFT CHECK
45.318
45.5%
checker faints 7.40%
▾
252+ SpA Hatterene Draining Kiss vs. 252 HP / 252+ SpD Kyurem: 146-174 (32.1 - 38.3%) -- 1.1% chance to 3HKO after Leftovers recovery
23
Gholdengo
SteelGhost
SOFT CHECK
327.542
45.4%
checker faints 4.64%
▾
252+ SpA Gholdengo Make It Rain vs. 252 HP / 252+ SpD Kyurem: 338-402 (74.4 - 88.5%) -- guaranteed 2HKO after Leftovers recovery
24
Urshifu-Rapid-Strike
FightingWater
SOFT CHECK
156.27
43.7%
checker faints 6.65%
▾
252+ Atk Urshifu-Rapid-Strike Close Combat vs. 252 HP / 0 Def Kyurem: 470-554 (103.5 - 122%) -- guaranteed OHKO
25
Cinderace
Fire
SOFT CHECK
50.071
40.5%
checker faints 9.80%
▾
252+ Atk Libero Cinderace High Jump Kick vs. 252 HP / 0 Def Kyurem: 474-558 (104.4 - 122.9%) -- guaranteed OHKO
26
Terapagos
Normal
SOFT CHECK
170.222
40.3%
checker faints 6.27%
▾
0- SpA Terapagos Tera Starstorm vs. 252 HP / 252+ SpD Kyurem: 64-76 (14 - 16.7%) -- possible 9HKO
27
Ferrothorn
GrassSteel
SOFT CHECK
152.703
35.3%
checker faints 6.61%
▾
0 Def Ferrothorn Body Press vs. 252 HP / 0 Def Kyurem: 158-188 (34.8 - 41.4%) -- 72.5% chance to 3HKO after Leftovers recovery
28
Great Tusk
GroundFighting
SOFT CHECK
160.061
34.4%
checker faints 6.15%
▾
252+ Atk Great Tusk Close Combat vs. 252 HP / 0 Def Kyurem: 474-560 (104.4 - 123.3%) -- guaranteed OHKO
29
Dragonite
DragonFlying
SOFT CHECK
139.128
34.2%
checker faints 6.85%
▾
252+ Atk Dragonite Outrage vs. 252 HP / 0 Def Kyurem: 482-570 (106.1 - 125.5%) -- guaranteed OHKO
30
Corviknight
FlyingSteel
SOFT CHECK
253.39
34.1%
checker faints 5.04%
▾
252+ Atk Corviknight Iron Head vs. 252 HP / 0 Def Kyurem: 240-284 (52.8 - 62.5%) -- 99.6% chance to 2HKO after Leftovers recovery
Ranked #18 with 9.59% usage. Sorted by reliability score.