@article{howreasoningevolvesfromposttrainingdataa,
  title = {How Reasoning Evolves from Post-Training Data: An Empirical Study Using Chess},
  author = {Lucas Dionisopoulos and Nicklas Majamaki and Prithviraj Ammanabrolu},
  year = {2026},
  eprint = {2604.05134},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2604.05134},
}