Digital Chessboard?

Projects General Guidance
1

I am doing this project were I have to "digitalize" a chessboard I'm planning to embed reed switches on the chess board and use chess pieces which have magnets at the bottom. But the problem is that if I do it using reed switches I will need 64 reed switches (as chess board is 8x8). But the Arduino doesn't have so many pins what should I do?

2

Multiplex - See the Keypad.h library.
Only need 16 pins, 8 for rows, 8 for columns.

3

Have you seen this project, it's in German but the circuit is in schematic:-
http://www.andreadrian.de/schach/#Selbstbau_Schachcomputer_SHAH

4

CrossRoads:
Multiplex - See the Keypad.h library.
Only need 16 pins, 8 for rows, 8 for columns.

Thank you, I'll try that.