Platon Sudoku · Sudoku Study

Weak links · Core Concepts

The ends cannot both be true: if one is true, the other must be false.

This course is adapted from Platon Sudoku App. Read the complete example here, then continue learning and practising in the app.

Definition

The ends cannot both be true: if one is true, the other must be false.

Check same-digit candidates that see each other, or distinct digits in one cell.

A weak link does not require either end to be true. Unrelated candidates have no link.

Teaching board · local candidate diagram

Observe candidates

The ends cannot both be true: if one is true, the other must be false.

Verify the condition

Check same-digit candidates that see each other, or distinct digits in one cell.

Draw the conclusion

The highlighted ends cannot both be true because they see each other or share one cell.

Teaching board · local candidate diagram

Observe candidates

The ends cannot both be true: if one is true, the other must be false.

Verify the condition

Check same-digit candidates that see each other, or distinct digits in one cell.

Draw the conclusion

The highlighted ends cannot both be true because they see each other or share one cell.

Teaching board · local candidate diagram

Observe candidates

The ends cannot both be true: if one is true, the other must be false.

Verify the condition

Check same-digit candidates that see each other, or distinct digits in one cell.

Draw the conclusion

The highlighted ends cannot both be true because they see each other or share one cell.

Teaching board · local candidate diagram

Observe candidates

The ends cannot both be true: if one is true, the other must be false.

Verify the condition

Check same-digit candidates that see each other, or distinct digits in one cell.

Draw the conclusion

The highlighted ends cannot both be true because they see each other or share one cell.