Hi All. Two programmer's trick puzzles are offer . Puzzle N1> Is required to exchange W with some file REGister . That one will be winner_1 who will find shortest solution with minimal ;) additional regs using . Puzzle N2> Is required to load any file REGister with value = VALUE , but W register haven't be changed after load is over . The same requrement to winner_2 ;) WBR Dmitry. P.S. I've find shortest solutions - Do you find it too ?