Since academic papers are lacking, the most detailed information comes from security firms and solver providers:
MTCaptcha challenges usually ask the user to slide a piece to complete a puzzle.
It is important to clarify that is a specific enterprise-grade CAPTCHA service, and unlike older services like reCAPTCHA v2 or basic text CAPTCHAs, there is no publicly available academic paper that provides a fully automated, high-accuracy solver for it.
No. Unless you have a team of WebGL engineers and time to reverse engineer obfuscated JavaScript weekly, building a solver for MTCaptcha is a maintenance nightmare.