Hidato

Hidato is a logic puzzle game invented by Gyora Benedek, an Israeli mathematician. The goal of Hidato is to fill the grid with consecutive numbers that connect horizontally, vertically, or diagonally. Try this one:

Numberlink 2

KenKen

In the example below, the numbers 1 to 4 have to be in each row and in each column.



The KenKen website has some games to play: http://www.kenken.com/play_now

Arukone

Arukone, or Numberlink, is a type of logic puzzle involving finding paths to connect numbers in a grid. The player has to pair up all the matching numbers on the grid with single continuous lines (or paths). The lines cannot branch off or cross over each other, and the numbers have to fall at the end of each line (i.e., not in the middle).

 It's one of the Nikoli puzzles. The Nikoli website has four easy examples to play:



http://www.nikoli.com/en/puzzles/numberlink/





Solution

Another:

Olympic Rings

This one is for voluntary homework:

There are nine white spaces in the Olympic symbol. Put each of the numbers from 1 to 9 in one of these white spaces, so that each circle has the same total number inside it.

Hint: The answer will be more than ten and less than fifteen.

Sudoku

The first one is really easy.

The numbers 1 to 4 must be in each row column and group of 4 cells.