Abstract
Some new, powerful, and very simple Bell inequalities are derived. They establish that for two spin-s particles in the singlet state, the quantum-theoretic Einstein-Podolsky-Rosen correlations for spin measurements along all pairs of directions from a set of N axes are incompatible with local realism for any set of distinct coplanar axes when N=3, and for any set of distinct axes whatever when N=4, with the possible exception of sets restricted by one of the constraints a^±b^±c^±d^=0. These results hold for any value of the spin.