Venn Diagram

Can you work out which areas of this diagram represent striped fresh water flat fish that don’t have dorsal fins, and salt water flat fish that have dorsal fins but not stripes?

Battleships

The numbers on the side and bottom of the grid indicate occupied squares or groups of consecutive occupied squares in each row or column. Can you finish the grid so that it contains three Trawlers, three Tugs and three Buoys so that the numbers tally?

Chess

Can you place a queen, a bishop, a knight and a rook on this chessboard that the red squares are attacked by exactly two pieces, the green ones by 3 pieces and the yellow ones by 4 pieces?

Cubism

This cut-out shape can be folded to make a cube.
Which of the four cubes below is the only one it could make?

Block Lock

Which two of these block piles could be fitted neatly together to make a perfect 3 x 3 x 3 cube?

Block Party

This used to be a big cube made of 125 small blocks measuring 5 by 5 by 5. If all the blocks that are not visible from this angle are present, can you work out how many have been taken away?

Par Four

You have four shots in which to get your golf ball upwards from the tee to the hole. Choose one each from the Drive, Iron, Chip and Putt selections. Each shot goes straight from the starting to finishing square. Only one combination will get you in the hole and you may never land off the grid, in a tree or in a bunker.

Patchwork

These patchwork is in three colours - blue, purple and red. If we don’t want any same-coloured pieces to share a border, what colour will the pieces at a and b be?

Safecracker

To open the safe, all 20 of the buttons must be pressed in the correct order (which is indicated by the numbers and directions on the buttons) before the “open” button is pressed. What is the ﬁrst button pressed in your sequence?

See Saw

Each of the five different coloured balls represents a different weight - 1, 2, 3, 4 or 5 kilos. Can you work out which balls weighs what, and how many yellow balls will balance the final scale?

Traffic Lights

Complete the grid so that each row and column contains a red, orange and green light. The lights at the end of each column and row tell you the colour of the first light you will meet if you travel in that direction down the column or row.