package Ġcom . zen ika . age of dev se co ps . domain . challenge ĊĊ Ċ interface ĠPlayer Ch allenges Checker Ġ{ ĊĠĠĠ Ġfun Ġon board ( player : ĠPlayer ): ĠPlayer Ch allenges Report ĊĠĠĠ Ġfun Ġcheck ( player : ĠPlayer ): ĠPlayer Ch allenges Report Ċ } Ċ