Λειτουργία Zεν
Chess-Online
12345678abcdefgh
1Nf3d62b3Nf63Bb2g64c4e55e3c66d4e47Nfd2d58Be2Bg79O-OO-O10Nc3Re811b4a612a4a513b5Nbd714Ba3dxc415Bxc4Nb616Ba2Be617Ncxe4