One of the things that makes Tango endlessly replayable is the range of board sizes. A 4×4 grid and a 10×10 grid follow the exact same four rules, but they feel like completely different games. Here's what changes as the board grows — and how to adjust your approach for each size.
The numbers at a glance
| Size | Cells | Symbols per line | Base row patterns | Typical solve time |
|---|---|---|---|---|
| 4×4 | 16 | 2 + 2 | 3 | 30–90 sec |
| 6×6 | 36 | 3 + 3 | 5 | 2–5 min |
| 8×8 | 64 | 4 + 4 | 12 | 4–10 min |
| 10×10 | 100 | 5 + 5 | 25 | 8–20 min |
"Base row patterns" is the number of fundamentally different valid rows (before reflections and colour inversions). More patterns means more variety — and more ambiguity to resolve.
4×4 The warm-up
With only 16 cells and 2 of each symbol per line, 4×4 boards are almost over before they begin. There are only 3 base row patterns, so the solution space is tiny. A single clue or a single filled cell often cascades into half the board.
Best for: learning the rules, daily warm-ups, teaching someone new.
Key technique: count first. With just 2 of each symbol per line, one filled cell immediately constrains the rest. Most 4×4 puzzles can be solved using only clue propagation and counting — you rarely need triple prevention or gap fills.
6×6 The sweet spot
This is the flagship size and where most players spend their time. With 36 cells and 3 of each symbol per line, 6×6 boards have enough room for interesting deduction chains without being overwhelming. The 5 base row patterns give good variety, and the clue density means there's usually a logical entry point visible at any moment.
Best for: daily play, leaderboard competition, building solving speed.
Key techniques: triple prevention and gap fills become essential. You'll regularly see two identical symbols adjacent and need to place the opposite on either side. The "sandwich" rule (A-blank-A forces the blank to be opposite) appears frequently. Edge patterns like the "Big Gap" rule start showing up on harder puzzles — if the first and last cells of a row match, the cells just inside them are forced.
8×8 The challenge tier
Jumping from 6×6 to 8×8 is a bigger leap than most people expect. The cell count nearly doubles (64 vs 36), the number of base row patterns more than doubles (12 vs 5), and the balance requirement grows to 4 of each symbol per line. This means the "almost full" counting rule kicks in later, so you spend more time relying on clue chains and pattern recognition before hard counts lock things down.
Best for: intermediate players looking for a real workout, longer puzzle sessions.
Key techniques: you need everything from 6×6 plus the 8×8-specific edge rules. For example, if three cells at one end of a row all match the same symbol, the cell just inside them on the opposite end is forced to be opposite. The solver calls this the "BigGap" rule for 8×8. You'll also encounter puzzles that require "opposite inference" — when unfilled "×" clues combined with near-full counts force remaining cells.
10×10 Expert territory
The 10×10 board has 100 cells, 5 of each symbol per line, and 25 base row patterns. The sheer volume of possibilities means that many of the shortcut rules (like the Big Gap and Equal-Gap rules) don't apply — the board is too big for their mathematical constraints to force specific cells. Instead, you rely heavily on methodical clue chaining, counting, and occasionally constraint enumeration.
Best for: experienced solvers seeking the ultimate challenge, relaxed long-form play.
Key techniques: patience and systematic scanning. Start with every "=" and "×" clue where one side is filled. Then do a full count pass over every row and column. Then look for pairs and sandwiches. Often you'll need multiple passes before the board starts yielding. On the hardest 10×10 puzzles, you may need to try "what if" reasoning — hypothesise a symbol, trace the consequences, and see if it leads to a contradiction.
How difficulty scoring adapts
8tango's difficulty score isn't just about board size — it's about which solving rules are required. A 6×6 that only needs counting and clue propagation is rated "Easy," while a 6×6 that requires constraint enumeration is rated "Very Hard." This means you can find easy puzzles on large boards and hard puzzles on small boards.
That said, larger boards tend to produce harder puzzles simply because there are more interactions to resolve. A randomly generated 10×10 is, on average, much harder than a randomly generated 4×4.
Choosing your size
There's no wrong choice. Here's a quick guide:
- Short break (2 min)? → 4×4
- Lunch break (5–10 min)? → 6×6
- Evening session (15–20 min)? → 8×8 or 10×10
- Want to learn? → Start Journey mode at 4×4 and let it ramp you up naturally