### Brain Teasers

# Alpha-Grid

20 cells are arranged in a 5x4 grid. The cells are occupied by 20 birds (10 different birds, a pair (2) of each).

The cells are labeled as follows:

ABCDE

FGHIK

LMNOP

RSTUW

The birds are: albatross, bunting, cardinal, chickadee, finch, flamingo, hawk, magpie, penguin, and swan.

A bird can only occupy a cell if the cell is labeled with a letter that is in the bird's name. For example, a hawk can only be in cell: H, A, W, or K.

Each pair of birds must be in the same row or the same column.

Where are the birds located?

The cells are labeled as follows:

ABCDE

FGHIK

LMNOP

RSTUW

The birds are: albatross, bunting, cardinal, chickadee, finch, flamingo, hawk, magpie, penguin, and swan.

A bird can only occupy a cell if the cell is labeled with a letter that is in the bird's name. For example, a hawk can only be in cell: H, A, W, or K.

Each pair of birds must be in the same row or the same column.

Where are the birds located?

### Answer

1) Determine the locations of the swans. The only cells that are in the same row/column are in row 4.2) Determine the locations of the hawks. One of the cells is eliminated because it is occupied by a swan. The only remaining cells that are in the same row/column are in row 2.

3) Determine the bird that is in row 1 column 2. Placing the bunting in that cell will lead to a dead end. Therefore, an albatross must be in that cell.

4) The remaining cells can be easily filled with the remaining birds.

Row 1: albatross, albatross, chickadee, chickadee, penguin

Row 2: finch, magpie, hawk, finch, hawk

Row 3: cardinal, magpie, flamingo, flamingo, penguin

Row 4: cardinal, swan, bunting, bunting, swan

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