• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Killer Cage: digits must sum to the value in the top left corner.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• German Whisper (green): adjacent digits must have a difference of at least 5.
• Renban (purple): digits on the line are a set of non-repeating, consecutive numbers, in any order.
• Rellik Cage: any combination of one or more digits cannot sum to the value in the top left.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Quadruple: digits within the circle must appear at least once in the surrounding cells.
• Loop: draw a loop that goes through all 3x3 boxes, does not go through a quadruple circle cell, has vertical symmetry, and shares the same entropy as those in the same 3x3 box.
• Entropy: low digits (1, 2, 3), medium digits (4, 5, 6), high digits (7, 8, 9).

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• *Thermometer (grey): digits along a thermoeter strictly increase from bulb to tip.

*The sum of every thermometer is 15.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Little Killer: digits outside the grid give the sum of the digits along the indicated diagonal.
• Circle (grey): digit must be odd.
• *X: cells connected with an X must sum to 10.

*all possible Xs are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Little Killer: digits outside the grid give the sum of the digits along the indicated diagonal.
• Dutch Whisper (yellow): digits are at least 4 apart from their neighbors on the line.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Little Killer: digits outside the grid give the sum of the digits along the indicated diagonal.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• 1-5-9: each digit in column 1 indexs the 1 in its row, each digit in column 5 indexs the 5 in its row, and each digit in column 9 indexs the 9 in its row.
• Killer Cage: digits must sum to the value in the top left corner.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.

*all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Entropic Line (tan): every string of three adjacent digits must contain one digit from each set: 123, 456, 789.
• Modular Line (teal): every string of three adjacent digits must contain one digit from each set: 147, 258, 369.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.
• *X: cells connected with an X must sum to 10.
• *V: cells connected with a V must sum to 5.

*not all possible dots/Xs/Vs are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Killer Cage: digits must sum to the value in the top left corner.
• Thermometer (grey): digits along a thermoeter stritly increase from bulb to tip.
• Circle (grey): digit must be odd.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Killer Cage: digits must sum to the value in the top left corner.
• Thermometer (grey): digits along a thermoeter stritly increase from bulb to tip.
• Circle (grey): digit must be odd.
• *V: cells connected with a V must sum to 5.
• Non-Consecutive: cells that are orthogonally adjacent cannot contain consecutive digits.

*all possible Vs are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Entropic Line (orange): every string of three adjacent digits must contain one digit from each set: 123, 456, 789.
• Modular Line (teal): every string of three adjacent digits must contain one digit from each set: 147, 258, 369.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Circuit Line (gold and silver): digits at the endpoints of each gold or silver line are the same as each other and indicate exactly how many unique digits are on that line.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Orthogonally connected cells within each region must differ by at least 3.
• Orthogonally connected cells between regions must differ by at least 4.
• The central digit in each region is less than or equal to its region number.

• Hashiwokakero: connect all of the islands by drawing a series of bridges between the islands. The bridges must:
• begin and end at distinct islands, travelling a straight line in between.
• not cross any other bridges or islands.
• only run orthogonally (i.e. they may not run diagonally).
• at most two bridges connect a pair of islands.
• the number of bridges connected to each island must match the number on that island.
• the bridges must connect the islands into a single connected group.

• Hashiwokakero: connect all of the islands by drawing a series of bridges between the islands. The bridges must:
• begin and end at distinct islands, travelling a straight line in between.
• not cross any other bridges or islands.
• only run orthogonally (i.e. they may not run diagonally).
• at most two bridges connect a pair of islands.
• the number of bridges connected to each island must match the number on that island.
• the bridges must connect the islands into a single connected group.

• Hashiwokakero: connect all of the islands by drawing a series of bridges between the islands. The bridges must:
• begin and end at distinct islands, travelling a straight line in between.
• not cross any other bridges or islands.
• only run orthogonally (i.e. they may not run diagonally).
• at most two bridges connect a pair of islands.
• the number of bridges connected to each island must match the number on that island.
• the bridges must connect the islands into a single connected group.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.

*all possible dots are given, black and white dots do not overlap.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Summing Lines: each coloured line represents a value. Each colour has a different value. A cell's digit equals the sum of all lines within that cell.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Killer Cage: digits must sum to the value in the top left corner.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.
• *X: cells connected with an X must sum to 10.
• *V: cells connected with a V must sum to 5.

*not all possible dots/Xs/Vs are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Thermometer (grey): digits along a thermoeter strictly increase from bulb to tip. Each pair of orthogonally adjacent digits includes exactly one odd and one even digit.
• Orthogonally adjacent digits are non-consecutive.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Slow thermometer (grey): digits along a thermoeter increase from bulb to tip. Digits may repeat.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Killer Cage: digits must sum to the value in the top left corner.
• Any digit inside a cage cannot see the same digit that is a king's or knight's move apart.
• Any digit outside a cage must see the same digit that is a king's and/or knight's move apart atleast once.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Disjoint: digits in the same relative position in different boxes cannot contain the same digit.
• Killer Cage: digits must sum to the value in the top left corner.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Thermometer (grey): digits along a thermoeter stritly increase from bulb to tip.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Entropy: blue cells are low (1, 2, 3), green cells are middle (4, 5, 6), orange cells are high (7, 8, 9).
• Circle (grey): digit must be odd.
• *X: cells connected with an X must sum to 10.
• Anti-Knight: any digit separated by a knight's move cannot be the same.
• The positive and the negative diagonals must sum to either 33 or 42.
• There is exactly one X-sum clue in the grid that is 41. Eg. There is a 41 clue positioned outside a row or column somewhere, and it gives the sum of the first X digits in that row or column, where X is the first digit in that row or column.

*all possible Xs are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• German Whisper (green): adjacent digits must have a difference of at least 5.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.

*not all possible dots are given.

• Squishdoku: place the digits 1-9 once each in every row, column, and 3x3 box (indicated by the dashed lines; 11 total boxes).
• German Whisper (green): adjacent digits must have a difference of at least 5.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.

*all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Cell Corner (purple): digits in circles tell you how many odd digits are in its surrounding cells (excluding itself). Each circle contains a different digit.
• Odd Little Killer: digits outside the grid give the sum of the odd digits along the indicated diagonal.
• Odd Dutch Whisper (grey): adjacent digits must be odd and have a difference of at least 5.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Anti-Knight: any digit separated by a knight's move cannot be the same.
• Killer Cage: digits must sum to the value in the top left corner.
• Palindrome Line (grey): digits must read the same forwards and backwards.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *X: cells connected with an X must sum to 10.
• *V: cells connected with a V must sum to 5.

*not all possible dots/Xs/Vs are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• German Whisper (green): adjacent digits must have a difference of at least 5.
• Killer Cage: digits must sum to the value in the top left corner.
• Palindrome Line (grey): digits must read the same forwards and backwards.
• Thermometer (grey): digits along a thermoeter stritly increase from bulb to tip.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.
• *X: cells connected with an X must sum to 10.
• *V: cells connected with a V must sum to 5.

*not all possible dots/Xs/Vs are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Anti-Knight: any digit separated by a knight's move cannot be the same.
• Arrow: digits along the arrow line must sum to the value in the circle.
• Palindrome Line (grey): digits must read the same forwards and backwards.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Diagonals: place the digits 1-9 once along each diagonal.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Product Bands (multi-coloured): multiplying the digits on two circles of the same colour equals the sum of the digits on the line connecting them. Each product band is associated with a unique colour and does not split. Digits on the endpoints of a product band index either their row, column, or box.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• *Dot (blue): a blue dot between cells indicates cell values with a 1:3 or 2:3 ratio.
• *Dot (red): a red dot between cells indicates cell values with a 3:5 or 5:8 ratio.
• Less Than (<): a "less than" sign indicates that the left digit is lower than the right digit.

*all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• Ying Yang: Shade some cells of the grid so that all shaded cells are orthogonally connected, all unshaded cells are orthogonally connected, and no 2x2 square is either fully shaded or fully unshaded. Adjacent shaded cells may not contain digits in a 1:2 ratio. Adjacent unshaded cells may not contain consecutive digits.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• German Whisper (green): adjacent digits must have a difference of at least 5.
• Renban (purple/pink): digits on the line are a set of non-repeating, consecutive numbers, in any order.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *X: cells connected with an X must sum to 10.

*not all possible dots/Xs are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Consecutive Power (blue, red, green): the digit at the top of each tower is the base digit. Raise its power by 1 each row down on the tower. The numbers are read left to right.
• Killer Cage: digits must sum to the value in the top left corner. Digits cannot repeat in cages.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• German Whisper (green): adjacent digits must have a difference of at least 5.
• Thermometer (grey): digits along a thermoeter stritly increase from bulb to tip.
• Little Killer: digits outside the grid give the sum of the digits along the indicated diagonal.
• Circle (grey): digit must be odd.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.
• *X: cells connected with an X must sum to 10.

*not all possible dots/Xs are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Dutch Flats: all 5's must have either a 1 above it or 9 below it. It could have both, but it doesn't need to.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Dutch Flats: all 5's must have either a 1 above it or 9 below it. It could have both, but it doesn't need to.
• Knight Cage: only cells for which there is at least one other cell with the same digit a knight's move away from that cell, count toward the given total for the cage given in the top left corner.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Palindrome Line (grey): digits must read the same forwards and backwards.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.
• *X: cells connected with an X must sum to 10.
• *V: cells connected with a V must sum to 5.

*not all possible dots/Xs/Vs are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Killer Cage: digits must sum to the value in the top left corner. Digits cannot repeat in cages.
• Arrow: digits along the arrow line must sum to the value in the circle. Digits do not repeat on the arrow's line.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.
• **X: cells connected with an X must sum to 10.
• **V: cells connected with a V must sum to 5.

*not all possible dots are given.
**all possible Xs/Vs are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Killer Cage: digits must sum to the value in the top left corner. Digits cannot repeat in cages.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Anti-Knight: any digit separated by a knight's move cannot be the same.
• German Whisper (green): adjacent digits must have a difference of at least 5.
• Renban (purple): digits on the line are a set of non-repeating, consecutive numbers, in any order.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Modular Line (teal): every string of three adjacent digits must contain one digit from each set: 147, 258, 369.
• Thermometer (grey): digits along a thermoeter strictly increase from bulb to tip.
• Little Killer: digits outside the grid give the sum of the digits along the indicated diagonal.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Arrow: digits along the arrow line must sum to the value in the circle.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Between Line: digits along a between line must be between the digits on the circled ends of the line. Each line has its own colour. Digits can repeat along lines.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.
• *Kropki Dot (grey): a grey dot between cells indicates either a black or white dot. This is to be determined by the solver.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Killer Cage: digits must sum to the value in the top left corner (if given). Digits cannot repeat in cages.
• Double Arrow: digits along a double arrow is equal to the sum of the digits in circles attached to either end of the line. Each double arrow has its own colour.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Thermometer: digits along a thermoeter strictly increase from bulb to tip. Each thermometer has its own colour.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Thermometer: digits along a thermoeter strictly increase from bulb to tip. Each thermometer has its own colour.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Region Sum Line: digits along a region sum line sum to the same digit "n" for each Box the line passes through. If a line enters the same box twice, each segment is summed independently. Each line has its own color.
• Quadruple: digits within the circle must appear at least once in the surrounding cells.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Lockout Line: digits along a lockout line must not be equal to or between the digits on the diamond ends of the line, which have a difference of at least 4. Each line has at least one line segment between it's endpoints. Each line also has its own colour.
• Killer Cage: digits must sum to the value in the top left corner (if given). Digits cannot repeat in cages.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Mystery Line: hidden under the fog are non-branching mystery lines. Each line has its own color. Each line has one of the following values that need to be determined by the solver:
• Palindrome
• German Whisper
• Region Sum
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Parity Line: digits along each line alternate between odd and even. All lines only move orthogonally and never diagonally. Each line has its own colour.
• Killer Cage: digits must sum to the value in the top left corner (if given). Digits cannot repeat in cages.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Palindrome Line: digits must read the same forwards and backwards. Each palindrome has its own colour.
• Killer Cage: digits must sum to the value in the top left corner (if given). Digits cannot repeat in cages.
• Numbered Room: digits outside the grid indicate the digit which has to be placed in the Nth cell in the corresponding direction, where N is first digit.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Killer Cage: digits must sum to the value in the top left corner (if given). Digits cannot repeat in cages.
• Arrow: digits along the arrow line must sum to the value in the circle.
• Doubler: each of the digits 1-9 appears as a "doubler" exactly once in the grid. There is only one "doubler" in each row, column and 3x3 box. Digits that appear as "doubler" have a value that is double their size.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Quadruple: digits within the circle must appear at least once in the surrounding cells.
• *Slingshot: if an arrow is present in a cell, the digit in the cell the arrow comes from appears in the grid in the direction of the arrow at a distance of "n" cells, where "n" is the digit in the arrow's cell.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Killer Cage Loop: connect some cells in the grid to form an orthogonally connected, non-intersecting loop. It is okay for the loop to touch diagonally, but not orthogonally. The cage totals are the sum of the digits that are not on the loop in each cage. The Loop does not need to visit every cage. If the loop visits a cage, it can only enter and exit it exactly once. Digits may not repeat in cages.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• Arrow: digits along the arrow line must sum to the value in the circle.
• One cell in the grid is the „Sparrow Bathing Spot“: Numbers increase or stay the same as they move away from the Sparrow Bathing Spot“ (Slow Nadir) in any direction (orthogonally and diagonally). Some cells in the grid are colored. A colored cell is either the Sparrow Bathing Spot or on its path, BUT! one colored cell is a „Liar“. Despite being colored it is neither the bathing spot, nor is it on its path. Which colored cell is the liar needs to be determined by the solver.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.

*not all possible dots are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• other rules to add

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• other rules to add

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• other rules to add

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• other rules to add

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• other rules to add

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• other rules to add

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• other rules to add

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• Fog: when a digit is correctly placed, both its own cell and its surrounding 8 cells will be cleared of fog.
• other rules to add

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.
• *X: cells connected with an X must sum to 10.
• *V: cells connected with a V must sum to 5.

*not all possible dots/Xs/Vs are given.

• Sudoku: place the digits 1-9 once each in every row, column, and 3x3 box.
• : .
• : .
• : .
• *Kropki Dot (black): a black dot between cells indicates cell values with a 2:1 ratio.
• *Kropki Dot (white): a white dot between cells indicates cells with consecutive values.
• *X: cells connected with an X must sum to 10.
• *V: cells connected with a V must sum to 5.

*not all possible dots/Xs/Vs are given.