Bogo Indian Defense X Ray Attack in Chess

In the Bogo Indian Defense, the “X Ray Attack” is a tactical idea where a bishop attacks a piece or square through an intervening unit. A defining feature is the dark-squared bishop’s long diagonal (often after …Bb4+ or …Bb4) that can pressure a target like the knight on c3 or the pawn on e4. The attack becomes “x-ray” when the pinned/hidden line is revealed by a move or capture that shifts the blocker.