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How to Play Logic Dogs

Master the art of logical deduction with our comprehensive guide

1. The Basics
2. Game Controls
3. Understanding Clue Types
4. Solving Strategies
5. Advanced Techniques
6. Pro Tips

1. The Basics

Logic Dogs is a logic grid puzzle game where you use clues to figure out which items belong in each column. Each puzzle features multiple categories (like Dogs, Sports, Food, etc.), and your goal is to determine which specific item from each category goes in each column.

The Golden Rules

Each column contains exactly one item from each category. If you have 4 categories with 4 items each, every column will have 4 items total — one from each category.
Each item appears in exactly one column. If the Golden Retriever is in column 2, it cannot be in any other column.
Every puzzle is solvable through pure logic. You never need to guess! If you're stuck, there's always a clue you haven't fully utilized.

💡 Beginner Tip: Start with 4x4 Easy puzzles. They have fewer items and simpler clues, making them perfect for learning the basics.

2. Game Controls

Making Moves

Left Click — Mark an item as CORRECT for that column. The cell will highlight and other items in that row will be eliminated.
Right Click — Eliminate an item as impossible. The image will fade out, helping you narrow down possibilities.
Click on Clues — Mark clues as "used" with a strikethrough to track which ones you've already applied.

Tools

Undo (Ctrl+Z) — Reverse your last move. Don't be afraid to experiment!
Check — Verify if your completed solution is correct.
Reset — Clear the grid and start fresh.
Random — Load a different puzzle of the same difficulty.

Auto-Fill Feature

When you eliminate all but one possibility in a cell, that item automatically fills in! This saves time and helps you see the cascade of deductions your eliminations create.

3. Understanding Clue Types

Clues describe relationships between items. Here's a complete reference:

Basic Position Clues

Symbol	Meaning
[A] = 3	Item A is in column 3
[A] = leftmost	Item A is in the first column
[A] = rightmost	Item A is in the last column
[A] ≠ first	Item A is NOT in the first column
[A] ≠ last	Item A is NOT in the last column

Relationship Clues

Symbol	Meaning
[A] ↕ [B]	A and B are in the SAME column
[A] ≠ [B]	A and B are in DIFFERENT columns
[A] → [B]	A is somewhere to the LEFT of B (not necessarily adjacent)
[A] ↔ [B]	A and B are ADJACENT (in neighboring columns)
[A] 🚫 [B]	A and B are NOT adjacent

Distance Clues

Symbol	Meaning
[A] \|1\| [B]	Exactly 1 column between A and B
[A] \|2\| [B]	Exactly 2 columns between A and B
[A] ≥N [B]	A and B are at least N columns apart
[A] ≤N [B]	A and B are at most N columns apart

Advanced Clues (Hard Puzzles)

Symbol	Meaning
[A] → [B] → [C]	Items appear in this left-to-right order (not necessarily adjacent)
[A] \| [B] \| [C]	B is between A and C (A and C can be on either side)
[A] = X or Y	A is in either column X or column Y
[A] ⟋ [B]	A and B are at diagonal positions (differ by 1 in both row and column)
[A] ♞ [B]	A and B are at knight's move positions (L-shape: 2+1)
[A] ↔ Center ↔ [B]	A and B are at symmetric positions around the center
[A] ≠ Edge	A is in a middle column (not first or last)
[A] = Odd	A is in an odd-numbered column (1, 3, 5...)
[A] = Even	A is in an even-numbered column (2, 4, 6...)

4. Solving Strategies

1 Start with Definite Clues

Look for clues that give exact positions like "[A] = 3" or "[A] = leftmost". These are free information — apply them immediately!

2 Apply "Same Column" Clues

When you see "[A] ↕ [B]", these items must be together. Once you know where one is, you know where both are.

3 Eliminate Systematically

Use right-click to eliminate impossibilities. If "[A] ≠ [B]" and you know A is in column 2, eliminate B from column 2.

4 Look for Forced Positions

After eliminating, check if any item has only one possible column left. Also check if any column has only one possibility for a category.

5 Work Edge Cases

Clues like "[A] → [B]" limit positions. If A must be left of B, A can't be in the rightmost column and B can't be in the leftmost.

5. Advanced Techniques

Chain Deductions

Sometimes you need to follow a chain of logic: "If A is in column 1, then B must be in column 2 (from clue 1), but that means C can't be in column 2 (from clue 2), so C must be in column 3..."

Contradiction Testing

When stuck, assume something is true and follow the logic. If it leads to an impossibility, the opposite must be true. Use Undo to backtrack!

Process of Elimination on Categories

If you've placed 3 of 4 items from a category, the last one must go in the remaining column — even if no clue directly mentions it.

⚠️ Common Mistake: Don't assume items are adjacent just because a clue mentions them together. "[A] → [B]" means A is to the left, but there could be any number of columns between them.

6. Pro Tips

Mark clues as used — Click on clues to strikethrough them. This helps you track what you've already applied.
Re-read clues often — As you fill in more information, clues that seemed unhelpful earlier might now give new insights.
Use Story Mode — Toggle "Story Clues" in settings to see clues as sentences like "The Akita plays saxophone" instead of symbols.
Don't rush — Logic puzzles reward patience. Taking time to think prevents mistakes that require extensive Undo usage.
Practice daily — The Daily Puzzles provide consistent practice. Your solving speed will naturally improve over time.

🎯 Ready to practice? Head to Logic Dogs and try a 4x4 Easy puzzle. Apply what you've learned and see how quickly you can solve it!

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