The Nikoli Derby - 7th world championship

Entry to The Nikoli Derby was closed

We will announce the ranking of all participants on Wed. Mar 10th.

The Nikoli Derby was developed by nikoli as a party game. It has very simple rules that make it exciting and easy for all, from kids to much older players. The number of players can be from 10 to 5,000,000,000 so The Nikoli Derby is enjoyable at any party. nikoli holds this derby with readers and customers at any chance we get.

Please study which gates became winners in the last four derby races from the "Winner's gates of the past Nikoli Derby" page and think hard about how you can win.

We are going to hold the 7th Nikoli Derby World Championship. Please register from the entry form at the bottom of this page.

What you need to do

You are the owner of a racehorse, and there are two things you need to do to take part in the derby.

  1. Enter the name of your horse.

    Please think of a good name for your horse, between 2 and 24 letters.

  2. Choose a starting gate number.

    Pick your favorite number, from 1 to 50, as your starting gate.

That's all. But note: you can only enter one horse! Please read the "Note" below.

How the winners are ranked

The gate number is the key to winning the Nikoli Derby. The smallest gate number chosen by only one person is the winner. If two or more persons choose the same gate number they will lose the race. This means that you have to choose the smallest number that nobody else has chosen to win the race. What is the smallest number from 1 to 50?

Right, of course gate number 1 has the greatest advantage, but other horse owners know that too. If say, two or more horses are entered for each of gates 1 to 50, then the horse starting from gate 51 will win. Now, you have to guess the "smaller number" of those where you will be the only starting horse. The final ranking is ordered from smaller to larger numbers.

Entry deadline

Tue. Mar 2, 15:00(UTC)

Result announcement

Wed. Mar 10,

We will announce the ranking of all participants, by horse name and owner name. We will also announce the countries where the prizewinners come from and some of the comments we receive.


Duplicated entries from the same email or IP address are invalid. Only the last entry from one address will be considered the valid entry for that person.


Champion original T-shirt

2nd to 5th place

Nikoli puzzle book: "Puzzle Communication Nikoli" latest volume

Booby prize

Nikoli Furoshiki - Japanese wrapping cloth

Booby prize will be given to the horse finishing next to last. This means the booby horse has one horse at the back which runs whole distance.

Prize of The Game of Minority DecisionPuzzle Communication NikoliNikoli original furoshiki designed by Maki Kaji, godfather of Sudoku