Bimaru: Battleship Solitaire

Somewhere on the chart there is a fleet. The numbers down the side and across the top tell you how many squares in each row and column are ship, everything else is open water. That is all you get. Work out where every vessel is hiding.

Bimaru, also known as Battleship Solitaire or Yubotu, is a pure logic puzzle. No timers, no lives, no guessing. Every board has exactly one solution, and it can always be reached by reasoning alone.

A NEW CHART EVERY DAY
One puzzle a day, the same board for everyone. Solve it to keep your streak alive, and see how many days in a row you can hold.

195 BOARDS ACROSS THIRTEEN SEAS
A voyage from Home Waters to the Mariana Deep. Boards open at a gentle 6x6 and grow to the classic 10x10 fleet: one battleship, two cruisers, three destroyers and four submarines.

MARK IT UP LIKE PAPER
Tap to set a hull, tap again for water. Drag to sweep a whole row, ruling squares out is most of the deduction. Row and column counts turn green the moment they are satisfied and red if you overshoot, so a mistake shows itself early instead of forty moves later.

STUCK? TAKE A HINT
Spend a hint to reveal a single square. You earn another every time you clear a board, so hints keep coming without paying for them.

BUILT FOR QUIET CONCENTRATION
• Calm paper-and-ink design, in light and dark
• Discreet sounds and haptics, both of which can be switched off
• Plays entirely offline
• No timers, no lives, no energy meter to wait on
• Your board is saved mid-puzzle, put it down and come back

Ships never touch, not even at the corners. That single rule is what makes every board solvable, and what makes solving one satisfying.

Good hunting.