Medium Online Games — Slacking Games Set 58
Medium Online Games — Slacking Games Set 58
medium browser games in our slacking games section Set 58. Free online.
- Slacking Games
- Medium Online Games
- Free online
Frequently Asked Questions
What is Seasonal Mathdoku?
Mathdoku (also known as KenKen or Calcudoku) is a math-based logic puzzle. You fill a spring grid so every row and column contains each digit exactly once (like sudoku), and every boldly outlined cage satisfies its arithmetic clue — the digits inside the cage must produce the target number using the specified operation (+, −, ×, or ÷). The seasonal Mathdoku variant uses seasonal as the primary operation, giving extra practice with that specific arithmetic skill.
How do I solve Medium spring Mathdoku?
Start with 1-cell cages (the digit is already given) and small cages with few valid combinations. Use the Latin square rule (no repeats per row/column) to eliminate candidates. For Medium puzzles, alternate between checking cage combinations and applying row/column constraints until every cell is resolved. Division cages are often the most constraining — use them first.
What grade level is Mathdoku best for?
This puzzle is well suited for elementary and middle school students. 4×4 addition Mathdoku is accessible from Grade 2. 6×6 puzzles with all four operations target Grades 4–6. 9×9 expert puzzles challenge advanced middle schoolers and adults. Teachers use Mathdoku as a differentiated activity — match the grid size and operations to the student’s current arithmetic fluency.
How many operations does Seasonal Mathdoku use?
Classic Mathdoku uses all four arithmetic operations (+, −, ×, ÷) distributed across cages. More operations increase solving complexity, as each cage type narrows candidates differently.
What is the difference between Mathdoku and Kakuro?
Both are arithmetic logic puzzles, but they differ in structure. Mathdoku (like sudoku) ensures each digit appears exactly once per row and column across the whole grid. Kakuro uses run-based clues where digits in each run must sum to a target without repetition within that run, but the same digit can appear in different runs. Mathdoku is generally better for classroom arithmetic practice; Kakuro rewards mastering addition combination sets.
How to Play
MathDoku puzzles exercise both logical deduction and mental arithmetic in a compact grid format. Each cage's target and operation constrain which digits can appear inside it, and the Latin-square rule — no repeats in any row or column — further restricts placements. Smaller cages with division or subtraction are especially powerful because they have very few valid fills: a two-cell subtraction cage with target one on a six-by-six grid can only hold consecutive digit pairs. Solving efficiently requires balancing cage arithmetic with row-column elimination. Each puzzle on this page has exactly one valid solution. Before placing digits, note the grid size because it determines the digit range — a four-by-four grid uses digits one through four, while a six-by-six grid uses one through six.
What This Page Is
MathDoku, also known as KenKen or Calcudoku, is an arithmetic logic puzzle on an N-by-N grid divided into groups of cells called cages. Each cage displays a target number and an arithmetic operation, and the solver must fill digits so that applying the operation to the cage's digits produces the target.
Goal
Place digits from one through N in every cell of the grid so that no digit repeats in any row or column and every cage's digits combine under its specified operation to produce the cage's target number.
- Note the grid size N to determine the valid digit range from one through N for every cell in the puzzle.
- Examine single-cell cages first — these are freebies with the target digit placed directly since no operation applies.
- For each multi-cell cage, list all digit combinations that produce the target under the given operation without repeating a digit if the cage spans a single row or column.
- Cross-reference cage candidate lists with row and column constraints to eliminate impossible digits from shared positions.
- Fill confirmed cells and propagate eliminations across intersecting rows, columns, and cages until every cell is determined.
Rules
- Each row and each column must contain every digit from one through N exactly once, forming a valid Latin square.
- The digits within each cage must produce the cage's target number when combined using the specified arithmetic operation in any order.
Tip
Subtraction and division cages in a two-cell group are the most restrictive — solve these first because they typically admit only one or two digit pairs, anchoring large sections of the grid early.