“…There are many versions of games connected with these problems. For example, one can mention the papers of Enns & Ferenstein in [I], (21,Presman & Sonin [131,Majumdar [lo], [Ill,Nikolaev [121,Sakaguchi [18],[19], [20], Fushimi [51 and Kurano,Yasuda & Nakagami [9], 1211. [20], [14].…”