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Simple flavor symmetry argument without QCD dynamics shows why CP violationobserved in neutral $B$ to $K\pi$ decays is absent in charged B decays wheretree diagram final state has two $u$ quarks satisfying Pauli principle.Entanglement preserves short range symmetry correlations after separation intotwo mesons. Pauli principle and symmetries require totally flavor-symmetrictree diagram final state. $\pi \pi$ isospin state with I=2 already is flavorsymmetric and suffers no symmetry constraint. Strange flavor-symmetric statewith V spin V=2 is linear combination of $K\pi$ and $K \eta$ with probabilityonly (1/4) for $K\pi$. Tree diagram suppression by factor 4 not present inneutral decays explains negligible tree-penguin interference and CP violationin charged decays. Detailed full symmetry analysis shows constraints fromspace-inversion, charge conjugation, Pauli antisymmetrization and flavorsymmetry. Two antiquarks produced at same space point by tree diagram have evenparity. Even parity final state requires even parity, even space symmetry andcolor-spin antisymmetry for two $u$ quarks. Color-singlet spin-singlet finalstate requires color-spin antisymmetry and therefore flavor symmetry fortwo-antiquark wave function. Flavor symmetric $\bar u \bar d$ and $\bar u \bars$ antiquark pairs have isospin I=1 and V-spin V =1. Generalized chargeconjugation invariance requires I=2 for $\pi\pi$ tree diagram and V = 2 for$K\pi$. Penguin decays give I = 1/2 final state and no CP violation.Experiments confirm surprising predictions from tree suppression factor notnoted in previous analyzes. I=1/2 violations seen only in relation betweencharged and neutral decays together with no I=3/2 components in each individualdecay. Common treatments using $\pi \pi$ data fail to fit $K\pi$ data.

Entangled symmetries explain without QCD dynamics CP violation in  neutral B to Kpi decays; not in charged B decays Unexpected isospin relations  in charged and neutral decays,