Commentary for Kiddushin 42:17

איבעיא להו כהן מהו ביפת תואר חידוש הוא לא שנא כהן ולא שנא ישראל או דילמא שאני כהנים הואיל וריבה בהן מצות יתרות רב אמר מותר ושמואל אמר אסור

and so there is no difference between priests and Israelites; or perhaps, priests are different, since the Writ imposes additional precepts upon them?<span class="x" onmousemove="('comment',' Hence they have a higher degree of sanctity.');">²⁴</span> - Rab said: It is permitted; Samuel ruled: It is forbidden. R'Nahman said to R''Anan: When you were at Mar Samuel's academy you wasted your time in chess.<span class="x" onmousemove="('comment',' Lit., 'you played in chess'; Iskumdre (the 'Aruk reads: iskundre) Pers. iskodar, **; v. Perles, Etymologische Studien, p. 113. R. Han. translates: dog-racing. Krauss, T.A. III, 113 regards it as the dice (Wurfel) in various games of chance.');">²⁵</span>

Daf Shevui to Kiddushin