Λειτουργία Zεν
Chess-Online
12345678abcdefgh
1g3g62Bg2Bg73d4d64Nf3Nf65Nc3O-O6O-ONc67e4e58d5Ne79Ne2Nh510Nh4f511Bg5f412Bf3Qe813Bxh5gxh514gxf4Ng615f5Nf416Ng3