| London System Club of Lichess - Devlpment of light bishop after early C4#2 or we can place it on e2 and after 0-0, rook e1 bishop f1 defending the sometimes weak square g2. | Koenigbube |
| Lichess Feedback - Yar puzzles be down#4 same problem | Koenigbube |
| London System Club of Lichess - Devlpment of light bishop after early C4#2 or we can place it on e2 and after 0-0, rook e1 bishop f1 defending the sometimes weak square g2. | Koenigbube |
| Lichess Feedback - Yar puzzles be down#4 same problem | Koenigbube |