@article{vamverbalizedactionmaskingforcontrollabl,
  title = {VAM: Verbalized Action Masking for Controllable Exploration in RL Post-Training -- A Chess Case Study},
  author = {Zhicheng Zhang and Ziyan Wang and Yali Du and Fei Fang},
  year = {2026},
  eprint = {2602.16833},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2602.16833},
}