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Neighbours Help

Rules / Objectives Summary

• Complete the grid such that every row and column contains every number exactly once.
• The symbols on the grid indicate neighbours (e.g. 1 >< 2, 3 >< 4, 2 >< 1).
• Rule 1 - if there is a symbol the numbers are neighbours.
• Rule 2 - if there is NOT a symbol the numbers are NOT neighbours.

See the Walkthrough or Extra Tips for extra tips and tricks.

 What are the symbols for?The symbols are double arrows that point to two numbers that are neighbours of each other.e.g. 1><2, 3><2, 3><4.Move your mouse over the puzzle to see the answer.

Walkthrough

 Step 1This is the start of the puzzle.Solve this puzzle for yourself at the same time.This example highlights the importance of the lack of a neighbour symbol. Step 2Because the <1> has no neighbour symbols, these squares in this row cannot be <2>. Step 3Because neither <1> has a neighbour symbol, these squares in this column cannot be <2>. Step 4Because the <2> has a neighbour symbol, this square must be either <1> or <3>. However, there is already a <1> in both the row and column, therefore this square is the <3>. Step 5This row and column can now be completed. Step 6As neither the <2> nor the <4> has a neighbour symbol, these squares cannot be <3>. Step 7This square cannot be <4>, and the row can be completed. Step 8There is already a <4> in this row, so the <4> for this column can't go in this square, and the column completes. Step 9Because the <1> has no neighbour symbol, this square cannot be <2>. The puzzle quickly completes. Step 10the completed puzzle.

Extra Tips

 Tip 1Because of the <2> and the neighbour symbol, A can only be <1> or <3>.Therefore B could be <2> or <4> - however, B can't be 4 as the <5> has no neighbour symbol.So B must be <2> (and A is either <1> or <3>).