Visiting all edges of the board 3

P. Quindt
Feenschach (tt)
1954
1st Prize

Draw

1. Nf1+ Kh3 2. Ng1+ Kg4 3. Nh2+ Kg5 4. Nh3+ Kh6 5. Ng4+ Kh7 6. Ng5+ Kg8 7. Nh6+ Kf8 8. Nh7+ Ke7 9. Ng8+ Kd7 10. Nf8+ Kc8 11. Ne7+ Kb8 12. Nd7+ Ka7 13. Nc8+ Ka6 14. Nb8+ Kb5 15. Na7+ Kb4 16. Na6+ Ka3 17. Nb5+ Ka2 18. Nb4+ Kb1 19. Na3+ Kc1 20. Na2+ Kd2 21. Nb1+ Ke2 22. Nc1+ Kf1 23. Nd2+ Kg1 24. Ne2+ Kh2 25. Nf1+ perpetual check

Both white knights visit every files and ranks of the board! Every edge is visited exactly twice by each knight. For this task, the author used an initial position with several promoted black knights...

Study 102a

V. Tarasiuk
Sadykov-80 MT
2016
Commendation
- version by A. Zhukov -

Draw

1. d7 d1=Q 2. d8=Q+ Qxd8 3. Nxd8 b5 3... Ke7 4. Nxb7 = 4. Nxe6+ Kf7 5. Ng5+ Kf6 6. Ne4+ Ke5 7. Nc3! b4 8. Na2 b3 9. Nc1 b2 10. Nd3+ Kd4 11. Nxb2 g5 12. Nd1 g4 13. Nf2 g3 14. Nh3 = The knight has visited all files, ranks and edges of the board!

Watch this study on a dynamic board! Click here!

Related studies: Study 102

Study 102

Á. Rusz
Internet (RCS blog)
2016
- after V. Tarasiuk & A. Zhukov -

Draw

1. Nh7+ Ke7 1... Ke8 2. Nd6+ Kd7 3. Nxb5 Ra8+ 4. Kg7 = 2. d6+ Ke6! 2... Kd7 3. Nf8+ Kc6 4. d7 Ra8 5. d8=Q Rxd8 6. Nxd8+ =; 2... Ke8 3. Nc5 g4 4. Nf6+ Kf7 5. Nxg4 = 3. Nf8+! 3. Nxg5+? Kd7 4. Nc5+ Kxd6 -+ 3... Kf7 4. d7 Ra8 5. d8=Q 5. Nd6+? Ke7!

chameleon echo

(5... Kxf8?? 6. Nc8 +-) 6. Nc8+ Kd8 7. Nb6 Rb8 8. Ne6+ Ke7+ 9. d8=Q+ (9. Nc8+ Kxd7 -+ chameleon echo)

chameleon echo

9... Rxd8+ 10. Nxd8 Kxd8 -+ 5... Rxd8 6. Nxd8+ Kxf8

7. Ne6+ Kf7 8. Nxg5+ Kf6 9. Ne4+ Ke5 10. Nc3! b4 11. Na2 b3 12. Nc1 b2 13. Nd3+ Kd4 14. Nxb2 g5 15. Nd1 g4 16. Nf2 g3 17. Nh3 = This knight has visited all files, ranks and edges of the board!

Watch this study on a dynamic board! Click here!

Related studies: Study 102a