Aerial & Skill Level Challenge

Aerial trick examination

In the 1990s the Hino Kendama club, led by former JKA chairman Hisashi Okuzumi, researched aerial tricks. The group held the JKA Aerial Tricks Competition from 1996. They also created an aerial trick exam system in 2006. Although they tried hard to achieve “Master” no one managed to pass that level. 

Trick Kyu Pre-Dan Dan Master
10 9 8 7 6 5 4 3 2 1 1 2 3 4 5
1 Spacewalk 1 2 3 3 3 3 3 3 3 3 4 5 6 7 8 9 10
2 Spacewalk 1-turn lighthouse
1 2 3 3 3 3 3 3 3 4 5 6 7 8 9 10
3 Mooncircle

1 2 3 3 3 3 3 3 4 5 6 7 8 9 10
4 Neo-spacewalk

1 2 3 3 3 3 3 4 5 6 7 8 9 10
5 Spacewalk 1-turn airplane

1 2 3 3 3 3 4 5 6 7 8 9 10
6 Spacewalk – neo-spacewalk

1 2 3 3 3 4 5 6 7 8 9 10
7 Mooncircle – mooncircle

1 2 3 3 4 5 6 7 8 9 10
8 Lightning drop

1 2 3 4 5 6 7 8 9 10
9 Backward spacewalk

1 2 4 5 6 7 8 9 10
10 Jumping spacewalk

1 4 5 6 7 8 9 10

Skill Level Challenge

Brief description of Skill Level Challenge (SLC)

  • This JKA Certification system was started in 2014
  • As of May 2019 there are 18 categories of tricks
  • The highest level/rank is SLC 18R.
  • Player level/rank is expressed using a two part designation; one number & one letter (Example: 1C).  
  • The number represents the Alpha level and the letter represents the Beta level.
  • The Alpha level designation, in this example 1, means that the player has completed the tricks in Category 1 with at least a 60% consistency level.  The Beta level designation, in this example C, means that the player has completed the tricks in Category 2 and 3 with at least a 20% consistency level.

*If there is no Alpha level number then no category was completed with at least 60%.  For example if the player completed Categories 1 through 4 at only 20% then the rank would be SLC D (SLC –D).

Example of testing procedure for someone starting at Category 1:

  1. Select 5 tricks from the Category 1 trick list.
  2. Attempt first trick.  If successful 3 times of 5 attempts proceed to next trick.
  3. If successful 3 times for each selected trick in the category the player will get Alpha level 1 (they will get Beta level A automatically).  
  4. If successful at least 1 time for each selected trick the player will get Beta level A.
  5. If there is one or more tricks that the player cannot complete the in the given category then the player’s turn ends.
  6. If a player gets Alpha level 1 or Beta level A the player may proceed to Category 2.
  7. The process continues repeating the same steps for Categories 2, 4, 5 . . .
CATEGORY 1 2 3 4 5 6
5E 5F
4D 4E 4F
3C 3D 3E 3F
2B 2C 2D 2E 2F
1A 1B 1C 1D 1E 1F
Alpha 60% = RED Beta 20% = BLUE


  1. Player completed 3 of 5 attempts for all selected tricks in Categories 1 through 4
  2. Player completed 1 of 5 attempts for all selected tricks in Category 5
  3. Was not successful in completing category 6 requirements

Rank: SLC 4E

SLC Rank/Level table

CATEGORY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
17Q 17R
16P 16Q 16R
15O 15P 15Q 15R
14N 14O 14P 14Q 14R
13M 13N 13O 13P 13Q 13R
12L 12M 12N 12O 12P 12Q 12R
11K 11L 11M 11N 11O 11P 11Q 11R
10J 10K 10L 10M 10N 10O 10P 10Q 10R
9I 9J 9K 9L 9M 9N 9O 9P 9Q 9R
8H 8I 8J 8K 8L 8M 8N 8O 8P 8Q 8R
7G 7H 7I 7J 7K 7L 7M 7N 7O 7P 7Q 7R
6F 6G 6H 6I 6J 6K 6L 6M 6N 6O 6P 6Q 6R
5E 5F 5G 5H 5I 5J 5K 5L 5M 5N 5O 5P 5Q 5R
4D 4E 4F 4G 4H 4I 4J 4K 4L 4M 4N 4O 4P 4Q 4R
3C 3D 3E 3F 3G 3H 3I 3J 3K 3L 3M 3N 3O 3P 3Q 3R
2B 2C 2D 2E 2F 2G 2H 2I 2J 2K 2L 2M 2N 2O 2P 2Q 2R
1A 1B 1C 1D 1E 1F 1G 1H 1I 1J 1K 1L 1M 1N 1O 1P 1Q 1R

カテゴリー1 / CATEGORY 1

1スクランブル飛行機Scrambled airplane
2一回転飛行機~灯立1-Turn airplane, Build the lighthouse
4天地二段Downspike, Base cup, Downspike
5灯台~けんLighthouse, Trade spike
6灯台とんぼ返りLighthouse flip
7胴体着陸Belly landing

カテゴリー2 / CATEGORY 2

1ライジング飛行機Rising airplane
2けん先おもてうらすべりSlip spike, Backhand slip spike
3飛行機~はやて中皿~玉つきさしAirplane, Fasthand base cup, Downspike
4うぐいすの谷渡りBird over the valley
5すべり止め極意Slip stop special
7風車ふりけんGunslinger spike
8金魚すくいScooping goldfish

カテゴリー3 / CATEGORY 3

1つるし一回転飛行機Hanging 1-turn airplane
2つるしふりけんHanging swing spike
3大皿~回転おとしけんBig cup, Fasthand airplane
5うずしお灯台Whirlpool lighthouse (Eddying current lighthouse)
6スーパーフラミンゴ宇宙遊泳Super flamingo spacewalk
7大皿~けんフリップ大皿~けんBig cup, kenflip big cup, Spike
8ターンテーブル~けんTurntable, Spike

カテゴリー4 / CATEGORY 4

1ヌンチャク飛行機Nunchaku airplane
2かぶせけんStuntplane fasthand
3ろうそく返しCandle, Flip spike
4三日月極意Crescent special
5月面着陸~一回転さか落としLunar, 1-Turn falling in
6扇風機~ふりけんSpacewalk handroll, Swing spike
7大皿~ジャグリング大皿~けんBig cup, Juggle big cup, Spike
8ピルエットつるしもちHanging pirouette

カテゴリー5 / CATEGORY 5

1灯台返しTap in
2ふりけんつむじ風Kenflip swing spike
3逆天地二段Stuntplane, Build the lighthouse, Stuntplane
4太陽極意Backhand slip stop special
5二回転灯台2-Turn lighthouse
6宇宙遊泳一回転飛行機Spacewalk 1-turn airplane
7大皿~けんフリップ中皿~けんBig cup, Kenflip base cup, Spike
8けんフリップ灯台Kenflip lighthouse
9中皿金魚すくいBase cup scooping goldfish

カテゴリー6 / CATEGORY 6

1半螺旋飛行機Half swirl to airplane
2うぐいす~回転おとしけんBird, Fasthand airplane
3掛け軸返しとめけんHanging scroll flip spike
6灯台~二回転とんぼ返りLighthouse, Double lighthouse flip
7胡蝶の舞Mooncircle, Mooncircle
8ふりけん~けんフリップ地球まわしSwing spike, Whirlwind

カテゴリー7 / CATEGORY 7

1飛行機~飛行機Airplane, Airplane
2うずしおとめけんWhirlpool spike
3つるし玉つきさしHanging downspike
4さるのこしかけ~けんCandle stick underbird, Tradespike
5回転うぐいすの谷渡りSwing bird, 1-Turn over the valley, 1-Turn spike
6うら月面着陸Inward lunar
7稲妻おとしLightning drop
8中皿~けんフリップ中皿~天中殺Base cup, Flip base cup, Downspike

カテゴリー8 / CATEGORY 8

1飛行機~タップうらはねけんAirplane, Tap reverse jumping stick
2ペンギン飛行機~はねけんPenguin airplane, Jumping stick
3飛行機~はやて中皿~回転さか落としAirplane, Fasthand base cup, Fasthand airplane
4スイーツスペシャルSweets special
5灯台~うら一回転すくいけんLighthouse, Inward 1-turn stuntplane
6つるし二回転灯台Hanging 2-turn lighthouse
7ペンギン中皿~二回転フリップ中皿~けんPenguin base cup, Double kenflip base cup, Spike
8あやとりCat’s cradle

カテゴリー9 / CATEGORY 9

1二回転飛行機2-Turn airplane
2飛行機~半フリップけんAirplane, 0.5-Turn swap spike
3地獄ぐるまDownspike, Down earth
4玉つきさし~さか落としDownspike, Falling in
5月面着陸とんぼ返りLunar flip
7はやぶさ返し~一回転灯台~けんBackcross spacewalk, 1-Turn lighthouse, Tradespike
8大皿~けんフリップ灯台~さか落としBig cup, Kenflip lighthouse, Falling in

カテゴリー10 / CATEGORY 10

1螺旋飛行機Swirl to airplane
2ろうそくうらふりけんCandle stick inward swing spike
3二回転はねけんDouble jumping stick
4一回転とめけんSwap spike
5一回転月面着陸1-Turn lunar
6円月殺法~空中持ちかえ一回転灯台Mooncircle swap 1-turn lighthouse
7ふりけん~うらけんフリップ地球まわしSwing spike, Inward whirlwind
8飛行機~けんフリップとめけんAirplane, 1.5-Turn swap spike
9ターンテーブル往復Turntable, Reverse turntable

カテゴリー11 / CATEGORY 11

1ハイパーライジング飛行機Hyper rising airplane
2やまびこ返しSwing UFO
3一回転すくいけん1-Turn stuntplane
4招き猫はねけんBeckoning cat
5極意わたりSlip stop special, Handlestall
6うぐいす飛竜のぼりけんBird, Arm curl, Spike
7円月殺法~うぐいすMooncircle bird
8風車天中殺Gunslinger downspike

カテゴリー12 / CATEGORY 12

1けん先たたき一回転飛行機Spike tap 1-turn airplane
2はやておとしFasthand falling in
3二回転横はねけんDouble UFO
4かかし返しScarecrow flip spike
5一回転たけうま1-Turn stilt
6宇宙遊泳二回転飛行機Spacewalk 2-turn airplane
7二回転風車ふりけんDouble gunslinger swing spike
8うらけんフリップ灯台~さか落としInward flip lighthouse, Falling in

カテゴリー13 / CATEGORY 13

1二回転うらはねけんDouble inward jumping stick
2二回転とめけん2-Turn swap spike
3すくいけん~一回転すくいはねけんStuntplane, Stuntplane flip
4三回転灯台3-Turn lighthouse
5月面着陸半回転ひねりLunar 0.5-turn barrel roll
6宇宙遊泳~一回転とめけんSpacewalk swap spike
7横けんフリップ地球まわしSide whirlwind

カテゴリー14 / CATEGORY 14

1デンマーク一周Around Denmark
2大皿極意Big wing
3前ふりうぐいす~こっくり谷渡りSwing bird over the valley special (Swing bird nod off bird, Over the valley nod off bird, Spike)
4半月殺法Half mooncircle
5稲妻おとし一回転とめけんLightning drop swap spike
6円月殺法~天中殺Mooncircle downspike
7かざぐるまWindmill (Gunslinger base cup, Gunslinger base cup, Gunslinger spike)

カテゴリー15 / CATEGORY 15

1一回転飛行機~一回転飛行機1-Turn airplane, 1-Turn airplane
2たけうまわたりStilt over the valley
3たけうまとんぼ返りStilt flip
4円月殺法~ふりけんつむじ風Mooncircle kenflip swing spike
5円月殺法中皿極意~けんMooncircle handlestall, Spike
6宇宙遊泳やまびこ返しSpacewalk swing UFO
7大皿~ジャグリングとめけんBig cup, Juggle spike
8ふりけん~二回転けんフリップ地球まわしSwing spike, Double whirlwind

カテゴリー16 / CATEGORY 16

1三回転飛行機3-Turn airplane
2月面着陸二回転とんぼ返りDouble lunar flip
3うぐいすの風車わたりBird gunslinger over the valley
4宇宙遊泳一回転月面着陸Spacewalk 1-turn lunar
5はやぶさ円月殺法玉つきさしBackcross mooncircle downspike
6円月殺法太陽極意~けんMooncircle backhand slip stop special, Spike
7ふりけん~ジャグリングとめけんSwing spike, Juggle spike
8あやとり宇宙ロケットCat’s cradle rocket

カテゴリー17 / CATEGORY 17

1つるし一回転天中殺Hanging 1-turn downspike
3二回転月面着陸2-Turn lunar
4銀河系一周Around the Galaxy
5うぐいす遠心力~けんBird centrifugal force, Spike
6宇宙遊泳~空中持ちかえうぐいすSpacewalk swap bird
8ダブルジャグリング~灯台Double juggling lighthouse
9ろうそく返しろうそく~けんCandle flip candle, Tradespike
10二回転ターンテーブルDouble turntable

カテゴリー18 / CATEGORY 18

1すくいけん~二回転すくいはねけんStuntplane, Double stuntplane flip
2小皿極意~大皿極意~けんSmall wing, Big wing, Spike
3月面着陸一回転ひねりLunar barrel roll
4うら二回転月面着陸2-Turn inward lunar
5うぐいすガンマンBird gunslinger
6宇宙遊泳~空中持ちかえ一回転玉つきさしSpacewalk swap 1-turn downspike
7ろうそく金魚すくいCandle scooping goldfish
8二回転うらふりけんフリップ地球まわしDouble inward whirlwind
9けんフリップ~けんフリップ地球まわしKenflip-flip earth turn
10飛行機~フリップジャグリング一回転飛行機Airplane, Flip juggling 1-turn airplane