Slate Puzzle

Slate puzzle is the simple 1-15 number arranging game. There are 16 pieces on the slate. 15 of them have numbers and one piece is blank. The objective of the game is to arrange numbers 1 to 15 in order. Piece with number 1 need to be brought to left side corner of row 1,the top row, followed by numbers 2 , 3 & 4. 5, 6, 7 & 8 to be arranged in row 2. 9, 10, 11 & 12 in row 3 and 13, 14 & 15 to be arranged in last row. Game can be played without sound or with sound.