<Tr> <Th> Puzzles </Th> </Tr> <Tr> <Td> Types (show) <Table> <Tr> <Th> Guessing </Th> </Tr> <Tr> <Td> <Ul> <Li> Riddle </Li> <Li> Situation </Li> </Ul> </Td> </Tr> <Tr> <Th> Logic </Th> </Tr> <Tr> <Td> <Ul> <Li> Dissection </Li> <Li> Induction </Li> <Li> Logic grid </Li> <Li> Self - reference </Li> </Ul> </Td> </Tr> <Tr> <Th> Mechanical </Th> </Tr> <Tr> <Td> <Ul> <Li> Combination </Li> <Li> Construction </Li> <Li> Disentanglement </Li> <Li> Lock </Li> <Li> Go problems </Li> <Li> Folding </Li> <Li> Stick </Li> <Li> Tiling </Li> </Ul> </Td> </Tr> <Tr> <Th> Transport </Th> </Tr> <Tr> <Td> <Ul> <Li> Tour </Li> <Li> Sliding </Li> <Li> Chess </Li> <Li> Maze (Logic maze) </Li> </Ul> </Td> </Tr> <Tr> <Th> Word and Number </Th> </Tr> <Tr> <Td> <Ul> <Li> Crossword </Li> <Li> Sudoku </Li> </Ul> </Td> </Tr> <Tr> <Th> Puzzle video games </Th> </Tr> <Tr> <Td> <Ul> <Li> Mazes </Li> </Ul> </Td> </Tr> <Tr> <Th> Metapuzzles </Th> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Th> Guessing </Th> </Tr> <Tr> <Td> <Ul> <Li> Riddle </Li> <Li> Situation </Li> </Ul> </Td> </Tr> <Tr> <Th> Logic </Th> </Tr> <Tr> <Td> <Ul> <Li> Dissection </Li> <Li> Induction </Li> <Li> Logic grid </Li> <Li> Self - reference </Li> </Ul> </Td> </Tr> <Tr> <Th> Mechanical </Th> </Tr> <Tr> <Td> <Ul> <Li> Combination </Li> <Li> Construction </Li> <Li> Disentanglement </Li> <Li> Lock </Li> <Li> Go problems </Li> <Li> Folding </Li> <Li> Stick </Li> <Li> Tiling </Li> </Ul> </Td> </Tr> <Tr> <Th> Transport </Th> </Tr> <Tr> <Td> <Ul> <Li> Tour </Li> <Li> Sliding </Li> <Li> Chess </Li> <Li> Maze (Logic maze) </Li> </Ul> </Td> </Tr> <Tr> <Th> Word and Number </Th> </Tr> <Tr> <Td> <Ul> <Li> Crossword </Li> <Li> Sudoku </Li> </Ul> </Td> </Tr> <Tr> <Th> Puzzle video games </Th> </Tr> <Tr> <Td> <Ul> <Li> Mazes </Li> </Ul> </Td> </Tr> <Tr> <Th> Metapuzzles </Th> </Tr> </Table> <Tr> <Th> Guessing </Th> </Tr>

How many edge pieces in a 750 piece puzzle