The Digit Gambit

A puzzle in the spirit of the Density™ puzzle. Enjoy!

Hint

The white figures are used in a known game. The game has a sort of board.

TL;DR: The answer to this puzzle is:

TOE TACTIC

Explanation: Note first of all that the puzzle itself bears a resemblance to:

A game of TIC-TAC-TOE, also known as Noughts and Crosses. This game is usually played between two players using pen and paper, on a board shaped like a hash or octothorpe: #.

Note next that:

You can treat each of the eight outer spaces on the board as if it is a different shape, made of either two or three lines:

Looking familiar? Of course! Because:

These are the symbols shown in the centre of the puzzle.

So if we next:

Consider the white parts of the puzzle as being noughts and crosses set out on a tic-tac-toe grid, we can replace each of the black symbols with its corresponding X or O from the #-shaped grid, to get:

 O / OOO / X
O / XO  / OXOX
O / XX  / OXOX

What can we do with this now? Well, how about trying to interpret this using:

Morse code, since we have only a message made of only two different characters.

By doing so, we find that:

Letting 'O' (nought) be dash and 'X' be dot, we get:

 - / --- / .
- / .-  / -.-.
- / ..  / -.-.

Which (as stated at the very top) translates to:

TOE
TAC
TIC

or when written in the (3,6) format of the expected answer: TOE TACTIC.

Notice finally that the title is:

Synonymous with this answer... Toe = Digit, and Tactic = Gambit. Everything ties up nicely!

• Well done! A small addendum to your excellent explanation is that the title is actually the answer in disguise. Hope you enjoyed it! – Jens Nov 22 '19 at 2:25
• @Jens Oh yes, forgot to mention that! Will edit in for completeness... – Stiv Nov 22 '19 at 7:03