# Fog of War Chess

arXiv: https://arxiv.org/abs/2601.18813 · HTML: https://mlsanity.com/paper/2601.18813/

## Key facts

- Cited by 1 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 21 Jan 2026.

## Built on by (most cited first, 1 of 1)

- [InfoChess: A Game of Adversarial Inference and a Laboratory for Quantifiable Information Control](https://mlsanity.com/paper/2604.15373/) (2026)

## Abstract (arXiv)

Fog of War chess is a popular variant of classical chess, in which both players have only partial information about the position of the opponent's pieces. This study provides the first theoretical analysis of endgames in Fog of War chess. In particular, we analyze the setups king and queen versus king, king and rook versus king, and king and two rooks versus king. We show that a king and queen can always guarantee a win against a lone king. In contrast to classical chess, a king and a rook cannot guarantee a win against a lone king. However, adding one more rook guarantees a win.