I can confirm that the original 2015 Nature paper for AlphaGo mentions setting ladder capture / ladder escape bits as input to the neural network. cf. https://

I can confirm that the original 2015 Nature paper for AlphaGo mentions setting ladder capture / ladder escape bits as input to the neural network. cf. https://gogameguru.com/i/2016/03/deepmind-mastering-go.pdf https://gogameguru.com/i/2016/03/deepmind-mastering-go.pdf, Extended data table 2