Object: Fill-in the Sudoku variation numbers grids - containing 'between the squares' markers.

Small 'between square' markers are displayed according to their variation rules.

• FiveandTen variant markers (V and X) inform of adjacent squares that can be added to... five or ten.
• Consecutive variant markers inform of adjacent squares that differ precisely by one digit.
• Kropki (Dots) variant includes the Consecutive markers plus solid black markers where an adjacent number is exactly half of its neighbour. The One and Two situation can be noted by either marker.

Click upon the visible 9x9 grid to initiate a new puzzle. Once done, the player (Self) needs to click any of the large left-side Indicator numbers to select an active number.
Clicking next onto a grid square(s) will continue to type-in that selected number(s).
A set of secondary indicator numbers are also available - for if/when a player isn't sure when filling in a square. A player may also utilize the empty spaces surrounding the main grid - using either of the two Indicator sets.
Generally, these Sudoku puzzles' given squares (in pairs) are mirrored.
Note: a Hint button is available near the bottom section of the indicator numbers.
Single square hints can be called upon at any player's (Self) turn.
Good luck.

Downside note:
Not every initiation process may generate a valid puzzle.