| Lichess Feedback - Error in puzzle 23307#1 Instead of 3... Qf2 I played 3... R8f2 but this was considered a wrong answer, though both moves lead to a forced mate in 4. | FourFits |
| Game analysis - An exquisite game between two masters.#1 http://en.lichess.org/B6DfyrU7 | FourFits |