Minimum number of givens of Sudoku

17-clue

Ordinary Sudoku (proved)

16-clue

3-block

12-clue

Diagonal Sudoku (a.k.a SudokuX) (unproved)

11-clue

Disjoint (a.k.a SudokuP) (unproved)

NRC (Windoku) (unproved)

9-clue

NRC (Windoku)+Diagonal Sudoku (unproved)

SudokuPX (Disjoint+Diagonal)

8-clue

The minimum number of variations that can replace a number

数字置換可能なバリエーション数独の最小値

HyperCube: 8 (proved)

Consider the 81 squares as the four dimensions of 3x3x3x3, where all the numbers in each 3x3 block are different.

81マスを3x3x3x3の4次元と見なして、3x3のブロックに同じ数が含まれない制約

Several Extra Regions

Anti-Knight-Anti-King (proved)

2021/9/6

by ryokousha

Magic Sudoku: 7 (unproved)

The sum of the row and col of each block is 15.

各ブロックが縦横の魔方陣になっている数独

メモ: 全探索出来そうな気がする

4-clue

2-Quasi-Magic Sudoku: 4

Anti-Knight & Diagonal & Magic Square(Center Only)

https://www.youtube.com/watch?v=hAyZ9K2EBF0

3-clue

Non-Consecutive-Anti-Knight Sudoku

2-clue minimum is 4 solutions

2表出の解の最小値は4解

Cyclic-Non-Consecutive (cNC, NC+)

隣接禁止制約に1,9も加えたNon-Consecutive-Sudoku

2-clue

Non-Consecutive-Anti-Knight-Anti-King Sudoku

https://www.youtube.com/watch?v=Tv-48b-KuxI&feature=youtu.be

1-clue

Kropki Sudoku (dot given)

0-clue

nonconsecutive, no touch, 8x8, Latin square, (Treat symmetric solutions as the same)

_#FFFFFF Additional Rules in English

Additional Rule 1.

If the sum, difference, product, or quotient of two adjacent squares, whichever is 5, a white circle is marked on the side between the squares.

If the sum, difference, product, or quotient of any of these is 10, a black circle is written on the side in between.

All white circles, and black circles are given

Additional Rule 2

For each intersection other than the outer perimeter, an "X" is marked if all four squares surrounding the intersection are even.

All X's are given.

Additional Rule 3

If two adjacent squares on each side are read from top to bottom or left to right to create an integer with two digits, and it is a multiple of 7, then a gray ellipse encloses the square.

All ellipses are given.

Additional Rule 4

If each line is divided into three bold lines and each of the three one-digit integers is an arithmetic sequence from left to right, the tolerance is written on the left of each line. If there are two or more arithmetic sequences, the tolerances are written in no particular order.

All tolerances are given.

Additional Rule 5.

The left three columns, the middle three columns, and the right three columns are separated by each line, and 3-digit integers are created for each line. If there are two or more integers consisting of the same 3 digits in the 3-digit integer, the pairs are written above.

Every pair of numbers is given

Reference