A two-stroke engine, (1) is disclosed which includes (I) transfer channels (15, 15′, 15″, 16, 16′, 16″) which open into the crankcase (8) and fluidly connect the crankcase (8) to the combustion chamber (3) at specific positions of the piston (4) and (ii) an intake channel (11) for supplying an air/fuel mixture into the crankcase (8) via an inlet (9) and is connected to an air filter (13). At least one air channel (12) supplies additional combustion air into at least one transfer channel (15, 15′, 15″, 16, 16′, 16″). For a good load-independent air/fuel mixture ratio, the length (a) of the intake channel (11) is up to 60% of the length (b) of the clean air path; and, length (b) is the mean channel length from the air filter (13) to the opening (19, 20) of a transfer channel (15, 16) into the crankcase (8).