Cow Taurus app for iPhone and iPad

The Game starts when the computer choses a secret code (combination of 4 Numbers). The aim of this game then is to find it, by making proposals of four numbers. Each time a proposal is given, the computer will indicate whether the proposal contains correct numbers and misplaced ones.
The secret code chosen by the computer may contain several times the same number.
A Taurus corresponds to a number in the proposal equal to a number in the secret code with the right position also.
A Cow corresponds to a number in the proposal equal to a number in the secret code, however the position do not correspond.