Λειτουργία Zεν
Chess-Online
12345678abcdefgh
1d4d52c4e63Nc3c54cxd5cxd45Qa4+Bd76Qxd4exd57Qxd5Nf68Qd1Nc69Nf3Bc510e3Qe711Be2O-O-O12O-Og513a3g414Nd4Rhg815b4Bb616Bb2h517Qc2Kb818Na4