Don't know why these type of puzzles are called "latin squares" --- but --- let's see what they are like. You have 16 colored blocks:

• a red square; a red triangle; a red circle; a red diamond
• a blue square; a blue triangle; a blue circle; a blue diamond
• a green square; a green triangle; a green circle; a green diamond
• a yellow square; a yellow triangle; a yellow circle; a yellow diamond

  task: put the pieces in the box below.

  • You cannot repeat any color in any row or column.
  • You cannot repeat any shape in any row or column.

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