Popular sweepstakes and point activity app series with 15 million downloads including jigsaw puzzles, solitaire, and spot the difference!
This is a super classic brain training game where you can enjoy prizes and points for free just by playing Sudoku!

◆What is “Sudoku de Sweepstakes”◆
You can enjoy Sudoku puzzles of various difficulty levels completely free of charge!
Easy to play with intuitive controls, and plenty of help functions such as memo input!
Among the questions added every day, you can enjoy not only normal Sudoku, but also unique Sudoku such as Cross Sudoku, Jigsaw Sudoku, and Inequality Sudoku!
This is a classic Sudoku app that allows you to earn money by simply playing puzzles and exchanging prizes and digital gifts!
You can solve puzzles logically and it is also recommended for brain training!

【how to play】
1. First, let's solve Sudoku!
2. If you clear Sudoku, you will get application points!
3.You can apply for the sweepstakes with 1 point as 1 unit!
4. If you win the sweepstakes, a special form will be displayed.
Please enter your prize delivery address and other information within one week after the results are confirmed!
(Please note that if you do not enter information from the special form within one week, the winning will be invalidated)
5.The office will contact you via the email address you registered in the special form!
6. You will receive a prize!

◆Enjoy various Sudoku games◆
[Inequality Sudoku]
Inequality Sudoku is a Sudoku game where the size of adjacent squares is indicated by a inequality sign. Like normal Sudoku, each vertical and horizontal column contains numbers 1 to 9. High-level problems may be difficult until you get used to them, but we only offer Sudoku puzzles that can be solved logically, so please try to be persistent.

[Cross Sudoku]
Normal Sudoku is to fill in the numbers 1 to 9 in three patterns: [vertical], [horizontal], and [within thick frame].
In addition to this, Cross Sudoku adds the element of [diagonal].
Numbers 1 to 9 are also entered in the colored diagonal squares.
Enjoy Sudoku with a difference!

[Jigsaw Sudoku]
Jigsaw Sudoku is similar to regular Sudoku, where you fill in the numbers 1 to 9 using three patterns: [vertical], [horizontal], and [within a thick frame].
However, the range of [bold frame] changes depending on the problem, like a jigsaw puzzle.
Of course, each [bold frame] will contain a number from 1 to 9.
The high level of Jigsaw Sudoku is quite difficult...!

[Cross Jigsaw Sudoku]
Cross Jigsaw Sudoku is a Sudoku that has the characteristics of both Cross Sudoku and Jigsaw Sudoku.
Like Cross Sudoku, numbers 1 to 9 are included in the diagonal, and like Jigsaw Sudoku, the range of thick frames that contain numbers 1 to 9 changes depending on the problem.

[What is a hint medal? ]
You can get hint medals by logging in every day.
You can use the hint function with hint medals.
You can clear even difficult problems by using the hint function.

[What is Sudoku? ]
Sudoku is an abbreviation for Number Place and is also called Sudoku.
This is a puzzle game where you enter numbers 1 to 9 into 9x9 squares divided into 3x3 blocks.
The rules are simple, just fill in the squares while observing the following two constraints!
[Constraint 1] Please enter any number from 1 to 9 into an empty square.
[Restriction 2] However, the same number cannot be contained multiple times in each vertical or horizontal column or in a 3x3 block surrounded by thick lines.
Perfect for brain training and killing time!


“Nanpre de Sweepstakes” is recommended for the following people
・I want to play with a free logic puzzle app that will train your brain.
・I used to play Sudoku, but I'm looking for a free app that allows me to win prizes and earn points.
・I want to enjoy not only normal Sudoku, but also complex and unique Sudoku.
・I want to try Sudoku, which is more difficult than what I've done before.
・I'm looking for a game where I can have fun while training my brain and killing time by winning prizes and making points.
・I like Sudoku
・I'm looking for a free Poikatsu game that can be enjoyed like Sudoku, rather than a Poikatsu game that has a sense of work.
・I want to play a free game that I can easily play in my free time, such as between housework or before going to bed, and can train my brain and keep active.
・I like puzzle games that are solved logically.
・I'm looking for a brain training app that I can use to kill time and get involved.
・I want to train my brain with simple rules
・I'm looking for a free game that doesn't focus on poi-katsu, but allows me to have fun while doing poi-katsu.
・I'm looking for a classic brain training game that everyone is playing.
・I'm looking for a brain training or poi activity game that I can play at my own pace for a long time.
・I'm looking for a brain training app, but I want to create an app that allows me to play and make good use of points.

[Unnecessary personal information is unnecessary! ]
You can enjoy it without registering your name or address.
Winners will be asked to enter their address in order to have their prize shipped, but this information will not be used for any purpose other than shipping the prize.


[Is it really true? ]
We have posted some of the testimonials of the winners and pictures of our staff packing the items.
Do you really win the sweepstakes? If you are worried about this, please take a look at the official note!
https://note.com/ohte_cs/n/n7ba413cacc7f


[About sweepstakes in this app]
When you clear Sudoku, you can earn application points depending on your level.
You can apply for the sweepstakes as one point per entry.
Each sweepstakes has a set number of winners and a deadline, which can be checked on the application screen.
Additionally, the maximum number of entries that can be submitted for one sweepstakes is 300. However, in the case of a limited-to-one prize, the maximum number of prizes is one.
The lottery will be held at 12:00 noon the day after the deadline using a special program, and winners will be selected completely at random based on the number of applications.
Winners can register as winners (information such as prize delivery address) from the lottery results screen, and prizes will be shipped within 30 business days after registration.
For prizes that are automatically sent via email, the email will be sent within 1 minute after the winner registers.
However, due to situations such as prizes being out of stock, the waiting time may be longer. Also, please note that if the registered address or email address is incorrect, or if email reception is refused due to domain specified reception, etc., the prize may not be delivered. In such cases, we will contact you via email, so if you win, please make sure you can receive emails from the @with-prize.com domain.
Please note that prizes can only be shipped within Japan and cannot be shipped overseas.
There is no cost to you until you receive your prize.

This app's sweepstakes is independently operated by Ohte Co., Ltd. (Shibuya-ku, Tokyo).
Aute Co., Ltd. is a group company of i-Mobile Co., Ltd., a company listed on the First Section of the Tokyo Stock Exchange. There is no fraud whatsoever in the operation of the service, and we aim to provide a service that users can use with peace of mind.

[Is this a bug? ]
If you have any problems, please contact us via "Contact us" on the "Other" screen in the app or from here ↓.
We will respond.
[email protected]

We will continue to improve the functionality of the app, so we would appreciate it if you could give us your opinions and requests.

Operating company: https://ohte.co.jp/
note: https://note.com/ohte_cs/
Twitter: @deKensho_Ohte
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