Shapedoku Articles · Page 4
Play smarter, think sharper
Guides for new players, strategies to solve faster, and the real benefits of a daily puzzle habit. Everything you need to get more out of Shapedoku and Sudoku.
Sudoku vs Futoshiki: Sets, Inequalities, and Strategy Compared
Compare Sudoku vs Futoshiki by row and column rules, inequality clues, candidate ranges, and the solving habits that transfer between both logic puzzles.
Read article→Sudoku vs Kakurasu: Candidate Logic and Weighted Sums Compared
Compare Sudoku vs Kakurasu by candidate logic, weighted row and column sums, binary shading, combinations, and the solving habits each puzzle rewards.
Read article→Miracle Sudoku: Rules and Solving Strategy
Learn Miracle Sudoku rules, how anti-knight, anti-king, and non-consecutive constraints combine, and how to turn local exclusions into placements.
Read article→Consecutive Sudoku: Rules and Solving Strategy
Learn Consecutive Sudoku rules, how marked neighbors differ by one, and how positive and negative adjacency clues can quickly narrow candidate pairs.
Read article→Magic Square Sudoku: Rules and Solving Strategy
Learn Magic Square Sudoku rules, how a marked 3x3 square uses equal sums, and how the special structure can force values before ordinary Sudoku does.
Read article→Argyle Sudoku: Rules and Solving Strategy
Learn Argyle Sudoku rules, how marked diagonals act as no-repeat units, and how to combine diagonal restrictions with classic row, column, and box logic.
Read article→Center Dot Sudoku: Rules and Solving Strategy
Learn Center Dot Sudoku rules, how the nine box centers form an extra region, and how that simple pattern creates powerful cross-grid deductions.
Read article→Girandola Sudoku: Rules and Solving Strategy
Learn Girandola Sudoku rules, how the nine windmill cells form an extra region, and how to turn that extra constraint into useful placements.
Read article→Sudoku vs Kuromasu: Number Placement and Shading Logic Compared
Compare Sudoku and Kuromasu by their rules, candidate work, visibility clues, connectivity, shading, and the solving habits each puzzle rewards.
Read article→Sudoku vs Tents and Trees: Placement Logic Compared
Compare Sudoku and Tents and Trees by their rules, candidate marking, row and column counts, spacing, and the logic each puzzle rewards.
Read article→Sudoku vs Masyu: Cell Logic and Loop Logic Compared
Compare Sudoku and Masyu by their rules, solving flow, candidate work, pearl constraints, and the reasoning each puzzle asks you to use.
Read article→Sudoku vs Star Battle: Set Logic and Spatial Placement Compared
Compare Sudoku and Star Battle by their rules, regions, exclusion patterns, candidate marking, and the solving habits each puzzle rewards.
Read article→Sudoku vs Suguru: Which Number Logic Puzzle Fits You
Compare Sudoku and Suguru by their rules, candidate logic, regions, adjacency constraints, and the kind of reasoning each puzzle rewards.
Read article→Sudoku vs LITS: Placement Logic and Tetromino Logic Compared
Compare Sudoku and LITS by their rules, solving flow, region constraints, connectivity, and the visual reasoning each puzzle rewards.
Read article→Sudoku vs Fillomino: Symbols, Regions, and Logic Compared
Compare Sudoku and Fillomino by their rules, solving methods, candidate logic, region growth, and the kind of patterns each puzzle rewards.
Read article→Sudoku vs Shikaku: Which Grid Puzzle Should You Play
Compare Sudoku and Shikaku by their rules, solving flow, candidate structure, rectangle logic, and the skills each puzzle rewards.
Read article→Sudoku vs Akari: Which Logic Puzzle Fits You
Compare Sudoku and Akari by their rules, solving style, candidate logic, line of sight, and the kind of reasoning each puzzle rewards.
Read article→WXYZ-Wing in Sudoku: A Practical Guide
Learn how WXYZ-Wings use four cells and four candidates to prove a shared elimination in difficult Sudoku puzzles.
Read article→Sudoku vs Nurikabe: Placement Logic and Shading Logic Compared
Compare Sudoku and Nurikabe by their rules, candidate work, island growth, wall connectivity, and the solving habits each puzzle rewards.
Read article→Sudoku vs Hashiwokakero: Grids, Islands, and Bridges Compared
Compare Sudoku and Hashiwokakero by their rules, solving flow, candidate logic, connectivity, and the deductions each puzzle rewards.
Read article→Sudoku vs Hitori: Which Logic Puzzle Fits You
Compare Sudoku and Hitori by their rules, solving methods, candidate logic, shading, connectivity, and the kind of thinking each rewards.
Read article→Numbered Rooms Sudoku: Rules and Solving Strategy
Learn how Numbered Rooms clues use the first digit as an index and turn outside clues into precise position constraints.
Read article→Outside Sudoku: Rules and Solving Strategy
Learn how outside clues restrict the first three cells of rows and columns and create useful placements in Outside Sudoku.
Read article→Sudoku vs Slitherlink: Grid Logic and Loop Logic Compared
Compare Sudoku and Slitherlink by their rules, deduction style, visual structure, and the kind of reasoning each puzzle rewards.
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