square psychedelic checkerboards with checkered seamless pattern with monochrome warped grid tile

pattern psychedelic square checker seamless background warp optical grid retro checkerboard y2k line white black groovy wave flag chessboard wavy vector 90s abstract texture trippy illustration poster art wallpaper monochrome tile distorted geometric chess 70s graphic print design board repeat gingham trend hippie cover curvy geometry illusion deformation textile vintage