8by8verse The Chess Universe
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Chess Lab › The logic room

Шахматное судоку

  • Логика и исключение
  • Ages 7 and up
  • About 8 minutes

The story behind it

Number-place puzzles became a craze around the world in the 2000s. Ours swaps the digits for chess pieces, and the thinking stays the same: you never guess. You ask, “what can this square NOT be?” until only one answer is left.

Read the full story: The first queen of chess →

How to play

  1. Tap an empty square, then tap a piece to put it there.
  2. No piece may repeat in a row, a column or a box.
  3. Red squares clash. A hint costs a star.

Levels

For teachers and coaches

Chess sudoku — Logic and elimination

Ages 7 and up · about 8 minutes · 8by8verse Chess Lab

What it teaches

Deduction by elimination; holding several constraints at once.

The story to tell first

Number-place puzzles became a craze around the world in the 2000s. Ours swaps the digits for chess pieces, and the thinking stays the same: you never guess. You ask, “what can this square NOT be?” until only one answer is left.

Three questions to ask

  • Which square did you fill first, and how were you sure?
  • What is the difference between guessing and knowing?
  • Could a grid like this have two right answers? How would you check?

Without a screen

Draw a four-by-four grid on the board with five clues and solve it aloud as a class, saying the reason for every square.

Восемь ферзей Проба, закономерность и доказательство Восемь ферзей, одна доска — и ни один не должен нападать на другого. От 9 лет · около 8 минут Back to the labAll 19 games and 12 stories.