Weights

Rules :

1. Assign digits from 1 to n to each weight, where n is the number of weights.
2. The horizontal rod indicates that there is equal torque on both sides.
3. The torque of each weight is its weight times its distance from fulcrum.
4. Assume that the strings and rods have negligible weight.

Example :

 Solution :

Water Fun

Rules :

1. Fill water in some parts of the grid.
2. The numbers below or next to the grid indicate how many squares of each row or column must be filled with water.
3. Connected areas of filled cells must have same surface height everywhere – even if the surface is not connected, like in a U-shaped tube.

Example :

 Solution :

Magnets

Rules :

1. The grid is made up of magnetic and non-magnetic plates.
2. Each magnetic plate has 2 halves: one positive (+) and one negative (-).
3. Halves with the same polarity cannot touch each other vertically or horizontally.
4. The digits outside the grid indicate the number of magnetic halves with a particular polarity in each row/column.

Example :

 Solution :

Simple Loop Finder

Rules :

1. Draw a single continuous loop that visits all dots.
2. The loop has only horizontal and vertical line segments.
3. Some line segments will be given.

Example :

Solution :

Puzzle No 13

Difficulty : Easy

Solution : 

Puzzle No 12

Difficulty : Medium

Solution :

Thermometer Sudoku

Same Basic Rules (as in classic sudoku):

Complete the Sudoku puzzle so that each and every row, column, and region contains the numbers 1 to 9 (for 9x9)

1 to 6 (for 6x6) so on..

Extra Rule :

The digits in each "thermometer"-shaped region must be strictly increasing from the circular bulb to the end.

Example :



Solution :

Thermometer

Rules : 

1. The thermometers in the grid all have their own level of mercury, which always flows from rounded end towards the other end.
2. Thermometers may be empty, partially or completely full.
3. Numbers around the grid indicate the numbers of cells in the corresponding row / column that contain mercury.

Example :

Solution :