Not a game (IMAGE) University of Tokyo Caption This may look like the game Minesweeper, which used to come with Microsoft Windows, but it’s really a plan of the LVR-15 research reactor in the Czech Republic where the experiments took place. The red squares represent the locations where the team placed their experimental samples and other apparatus. Credit ©2025 Maruyama et al. CC-BY-ND Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the work are permitted. License CC BY-ND Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.