Visiting all edges of the board 1

O. Pervakov
Sadykov-80 MT
2016
1st Prize

White wins

1. Nb6+ 1. Rxd3? Rh8 = 1... Kb8 1... Kb7 2. Rf5 Nxh7 3. Rf7+ Ka6 4. Rxh7 +- 2. Nd7+ Ka8 3. Nf8! Nxh7 4. Nxh7 e4 5. Re3 5. Rh3? Rg8+ 6. Kf2 Rg4 7. Rh2 Ka7 8. Ke3 h3! 9. Rxh3 Rg2 10. Kxe4 Rxd2 = 5... Rg8+ 6. Kh1! 6. Kh2? h3 7. Rxh3 Rg6 = 6... h3 7. Nf6 Rg2 8. Nxe4 Re2

Paralysis

9. a6! 9. Kg1? h2+ 10. Kh1 Kb8 11. a6 Ka7 = mutual zugzwang 9... Ka7 10. Kg1 h2+ 11. Kh1 mutual zugzwang 11... Ka8 11... Kxa6 12. Rxe2 (minor dual 12. Nc5+) 12... dxe2 13. Nc5+ Kb5 14. Nd3 Kc4 15. Ne1 +- The knight has visited all edges of the board!

12. Nc3 Rxd2 13. Nb5 Rb2 14. Re8#

Study 41

Árpád Rusz
Doré JT
2008
3rd Commendation

White wins

1. Rxg6! 1. Rh1? Bg5+ = 1... Bg5+ 1... hxg6 2. h7 +- 2. Kd4! 2.Ke4? hxg6 3. h7 f5+ 4. Ke5 Bc1 -+

Paralysis

From now on, only the kings are allowed to move, the rest of the pieces are "paralyzed". 2... Kb4! 3. Kd5 Kc3 4. Ke6

Dual avoidance

a. 4... Kd4 5. Kf7! (5. Rxf6? Bxf6 6. Kxf6 Kd5! 7. Kg7 Ke6 8.Kxh7 Kf7 =)

b. 4... Kd3 5. Rxf6! (5. Kf7? Bxh6 6. Rxh6 f5 7. Kf6 (7. Rf6 Ke4 8. Kg7 Kf4! 9. Kh6 Kg4 =) 7... f4 8. Kg5 f3 9. Rf6 Ke2! =) 5... Ke4 (5... Bxf6 6. Kxf6 +-) 6. Rg6! Switchback Be3 (6... Kf4 7. Kf7 +-) 7. Rg4+ Kf3 8. Rh4 +-

Dual avoidance

a1. 5... Ke5 6. Kg8! +- ( 6. Kg7? hxg6 7. h7 f5 8. h8=Q Bf6+ -+)

a2. 5... Ke4 6. Kg7! (6. Kg8? Bxh6 7. Rxh6 f5 8. Kxh7 f4 =) 6... Bxh6+ 7. Rxh6 +-

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Study 32

Peter Boll & Árpád Rusz
Internet (ChessProblem.net)
2008

White wins

1. d4+ Ne4 1... Kg4 2. dxc5 +- 2. f3 Bb3+ 3. Ke1 Bd5 From now on, only the white king and the black bishop are allowed to move.

Paralysis

4. Kf1 4. fxe4+? Bxe4 = 4... Bc4+ 5. Kg2 Bd5 6. Kh3 Bb7 7. Kh4 Bc6 8. Kh5 Be8+ 9. Kh6 Bc6 10. Kg7 Bd5 11. Kf8 Bc6 11... Kf6 12. fxe4 +- 12. Ke7 and after a long walk, the white King will capture the black Pawn.

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