EkUm Studio · Logic Puzzle

DUALIS

☀ · 🌕

A logic puzzle of light and shadow.
Balance the sun and moon. Find the one truth.

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How to Play

Simple to learn.
Difficult to master.

Tap each cell to cycle through ☀️ sun, 🌕 moon, or empty. Fill the grid so every row, column, and constraint is satisfied.

👆

Tap to Place

Tap any empty cell. First tap places a ☀️ sun, second tap a 🌕 moon, third tap clears the cell.

⚖️

Keep Balance

Every row and column must contain exactly 3 suns and 3 moons. Neither can dominate.

🔗

Follow Constraints

= means two adjacent cells must match. ✕ means they must differ.

✦

One Solution

Every puzzle has exactly one correct answer. Logic alone will get you there — no guessing required on Easy and Medium.

The Rules

Three laws govern the cosmos.

2️⃣

No Triple

The same symbol cannot appear three or more times in a row — horizontally or vertically. Pairs are allowed; triplets break the balance.

⚖️

Equal Parts

Each row and each column must contain exactly 3 suns and 3 moons. Light and shadow in perfect equilibrium.

🔗

Constraints

Some adjacent pairs are connected by = (must match) or ✕ (must differ). These are clues, not obstacles.

☀️

= means same

🌕

☀️

✕ means different

☀️

🌕

max 2 in a row

Difficulty

Choose your challenge.

Three difficulty levels, each demanding a different kind of thinking.

Difficulty I

Easy

Solvable using direct logical deduction only. Every move is provable — no guessing, no trial and error. Perfect for building intuition.

Difficulty II

Medium

Requires deeper reasoning — combining multiple rules simultaneously. Still no guessing required, but the path is less obvious.

Difficulty III

Hard

Logic alone may not be enough. Some paths require a hypothesis — place a symbol, follow the consequences, and backtrack if the cosmos rejects it.

Daily Challenge

A new balance, every day.

🌅

Daily Puzzle

Every day at midnight, a new puzzle appears — the same puzzle for every player on Earth. Solve it, climb the leaderboard, and come back tomorrow.

New puzzle daily Global leaderboard Streak tracking All difficulty levels

☀️ 🌕

Find the Balance.

Free to play. Available on Android and iOS.

Get it on Google Play