www.arves.org - Pat a Mat 2021

Studies awarded for the Pat a Mat magazine tournament 2021.

[Event "Pat a mat 2020-1, I. prize"] [Site ""] [Date ""] [Round ""] [White "Amatzia Avni, Israel"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "3b4/5p1k/5p1N/1r5R/5p1K/5N1P/8/8 b - - 0 1"] [PlyCount "19"] [EventDate "2020"] 
 1... Kg6 $1 (1... f5+ 2. Ng5+ Kg6 3. Nhxf7 $11) 2. Nf5 $1 (2. Kg4 $5 Rxh5 3. Nf5 Rg5+ (3... Rh8 4. N3d4 f3 5. Nxf3 Rg8 6. h4 Kh7+ 7. Kh5 Bc7) 4. Nxg5 fxg5 5. Nd4 (5. h4 gxh4 $19) 5... Bb6 6. Nf5 f3 7. Ng3 f2 8. Kf3 f5 $19) (2. Rxb5 $4 f5+ 3. Ng5 Bxg5#) 2... Rxf5 3. Rh8 (3. Rxf5 $2 Kxf5 $19) 3... Rh5+ $1 {Umnov} ( 3... Bc7 4. Rg8+ Kh7 5. Ra8 {and white holds}) 4. Rxh5 f5+ 5. Ng5 (5. Rg5+ $4 Kh6 $19) 5... Ba5 (5... Be7 6. Rh6+ Kxh6 $11) 6. Nf3 Bd8+ 7. Ng5 Bb6 8. Ne4 (8. Rh6+ $2 Kxh6 9. Nxf7+ Kg7 $19) 8... f6 $1 (8... fxe4 9. Re5 f3 (9... f5 10. Re6+) 10. Rxe4 Bf2+ 11. Kg4 f5+ 12. Kxf3 $11) 9. Nc5 $1 (9. Rxf5 $2 Kxf5 $19) ( 9. Rh8 fxe4 10. Kg4 Bc7 {and black's strong pawns will win}) 9... Bxc5 (9... f3 10. Kg3 f2 11. Kg2 Kxh5 12. Nd3 $11) 10. Rh6+ Kxh6 {stalemate} 1/2-1/2

[Event "Pat a mat 2020_1, Spec. prize"] [Site ""] [Date "2020"] [Round ""] [White "P.Arestov & M. Garcia & V. Tarasiuk"] [Black "Russia & Argentina & Ukraine"] [Result "1-0"] [SetUp "1"] [FEN "8/8/N7/p1K5/P7/6b1/Pk2p3/5nR1 w - - 0 1"] [PlyCount "37"] [EventDate "2018"] 
 1. Rg2 Bf2+ $1 2. Rxf2 Ng3 3. Kb6 $1 {A)} ({them. try} 3. Kb5 $2 Ka1 $3 (3... Kb1 $2 4. Rxe2 Nxe2 5. Kxa5 $18 {see solution}) 4. Rxe2 (4. Nb4 axb4 5. Rxe2 Nxe2 6. Kxb4 (6. a5 Nd4+ 7. Kc5 b3 $1 8. axb3 Nxb3+ $11) 6... Kxa2 7. a5 Nd4 8. a6 Nc6+ 9. Kc5 Na7 10. Kb6 Nc8+ 11. Kb7 Nd6+ 12. Kc7 Nb5+ $11) 4... Nxe2 5. Kxa5 Nc3 6. Kb4 Nxa4 7. Kb3 Kb1 $1 {zz (1)} 8. a3 Nb6 $1 9. Nc5 Kc1 $1 10. Ne4 Kd1 $1 11. Nd6 Ke2 12. Nc4 Nd5 13. a4 Kd3 14. a5 Kd4 $11) 3... Kb1 $1 ({B)}  3... Ka1 4. Nb4 $1 ({them try} 4. Rxe2 $2 Nxe2 5. Kxa5 Nc3 6. Kb4 Nxa4 7. Kb3 Kb1 $1 $11 {similar to them. try in (1)}) 4... axb4 5. Rxe2 Nxe2 6. a5 Nc3 ( 6... Kxa2 7. a6 b3 8. a7 b2 9. a8=Q+ $18) 7. a6 Nxa2 8. a7 b3 9. a8=Q b2 10. Qh8 $1 $18) ({C)} 3... Kc3 4. Rxe2 Nxe2 5. Kxa5 Kc4 6. Kb6 Nc3 7. a5 Nd5+ 8. Kc6 Ne7+ 9. Kd7 Kb5 (9... Nd5 10. a4 $1 Nc3 11. Kd6 {/c7} Nxa4 12. Kc6 $1 $18) 10. Nc7+ Kxa5 11. Kxe7 Ka4 12. Nd5 Ka3 13. Nc3 $18) 4. Rxe2 (4. Nb4 $2 e1=Q) 4... Nxe2 5. Kxa5 Nc3 6. Kb4 Nxa4 (6... Kb2 7. a5 $1 $18) 7. Kb3 $1 {zz} (7. a3 $2 Nb6 $1 8. Kb3 Kc1 $1 $11) 7... Nb6 8. Nc5 $1 ({Try :} 8. Nb4 $2 Kc1 9. Nd3+ Kd2 10. Ne5 Ke2 11. Kb4 Nd5+ {(2)} 12. Kc4 Nb6+ 13. Kb3 Nc8 $1 14. Kb4 Nb6 15. a3 Nd5+ 16. Kc4 Nb6+ 17. Kc5 Na4+ 18. Kb4 Nb6 19. Kb3 Nc8 $1 20. a4 Ke3 $11) 8... Kc1 9. Ne4 $1 (9. Nd3+ $2 Kd2 10. Ne5 Ke2 11. Kb4 Nd5+ $11 {similar to try in (2)}) 9... Kd1 10. Kc3 Kc1 (10... Ke2 11. Kd4 Kf3 12. Nc3 Kg4 13. Kc5 $18) 11. a3 Kd1 ({main 1 :} 11... Nd5+ 12. Kb3 Nb6 13. Nd6 Kd2 (13... Kd1 14. Nc4 Nd5 15. a4 $18) 14. Nc4+ Nxc4 15. Kxc4 $18) 12. Nd6 Nd5+ 13. Kc4 Nb6+ 14. Kb5 Nd5 15. Kc6 $1 ({try} 15. Ne4 $2 Kc2 16. a4 Kd3 17. Nc5+ Kd4 18. a5 Ke5 19. Nb7 Ke6 20. Kc5 Nc7 21. Kc6 Na6 22. Kb6 Nb4 23. Nc5+ Kd6 24. Ne4+ Kd7 $11) 15... Nc3 16. Ne4 $1 Nxe4 ({main 2 :} 16... Na4 17. Kb5 Nb2 18. Kb4 Ke2 19. Kb3 Nd3 (19... Ke3 20. Nf2 $1) 20. Kc3 Ke3 21. Nd6 Nc5 (21... Nf4 22. Kc4 Nd3 23. Kd5 Nb2 24. Nc4+ $1 $18) 22. Kc4 Nd7 $1 23. Kb5 $1 Kd4 24. a4 Ke5 25. Nb7 $1 Kd5 26. a5 Nb8 27. Kb6 Nc6 (27... Kd4 28. Kc7 Na6+ 29. Kc6 $18) 28. a6 $18) 17. a4 Nf2 18. a5 Nd3 19. Kb5 $1 $18 1-0

[Event "Pat a mat 2020_1, 2nd hon. men."] [Site ""] [Date "2021"] [Round ""] [White "Stanislav Nosek, Michal Hlinka"] [Black "Czechia & Slovakia"] [Result "1/2-1/2"] [SetUp "1"] [FEN "3R4/8/N1rp3B/1K6/2pb4/2R4p/pk6/8 w - - 0 1"] [PlyCount "18"] [EventDate "2020"] 
 1. Rc1 Rb6+ (1... a1=Q 2. Rxa1 Kxa1 3. Bf4 Rxa6 4. Kxa6 Be5 5. Bxe5+ dxe5 $11) 2. Kxc4 (2. Ka5 $2 Ka3 $1 $19 {for example} 3. Rf8 Rb1 4. Nb4 Rxb4) 2... h2 3. Nb4 $1 (3. Bf4 $6 {logical try, but} Bg1 $1 ({but not} 3... Rc6+ $6 4. Nc5 $3 Rxc5+ 5. Kxd4 Rxc1 6. Rb8+ $1 Ka1 7. Bxh2 $11) 4. Nc5 $1 (4. Bxh2 Kxc1 $19) 4... h1=Q (4... dxc5 5. Rd2+ $1 Kxc1 6. Rxa2+ Kb1 7. Bxh2 $1 Rb4+ 8. Kd3 Kxa2 9. Bxg1 c4+ 10. Kc3 Ra4 11. Bc5 $11) 5. Nd3+ Ka3 6. Bxd6+ Ka4 $1 7. Nc5+ Ka5 $19 8. Nb3+ Rxb3 $19 9. Kxb3 {for example} Qd5+ 10. Ka3 Ka6 11. Be7 Qf3+ 12. Kxa2 Qe2+ 13. Kb3 Qxe7) 3... Rxb4+ $1 (3... a1=Q $4 4. Nd3+ Ka2 5. Ra8+ $18) 4. Kxb4 a1=Q (4... Bg1 $2 5. Rb8 $18) 5. Rxa1 Kxa1 6. Be3 $3 (6. Rc8 $2 Bc5+ $1 $19) (6. Rxd6 $2 h1=Q 7. Rxd4 Qxh6 $19) 6... Bc5+ (6... Bxe3 7. Rh8 $11) (6... h1=Q 7. Bxd4+ Kb1 8. Rxd6 $11) (6... Bc3+ 7. Kxc3 h1=Q 8. Rxd6 $11) 7. Bxc5 dxc5+ 8. Ka3 $1 h1=Q 9. Rd1+ Qxd1 {model stalemate} 1/2-1/2

[Event "Pat a mat 2020_1, Comm."] [Site ""] [Date "2021"] [Round ""] [White "Amatzia Avni & Michael Pasman, Israel"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "K6N/1prp4/8/2p3k1/1PP5/8/1P6/8 w - - 0 1"] [PlyCount "13"] [EventDate "2020"] 
 1. Nf7+ ({Try :} 1. Kb8 Rc6 2. Nf7+ (2. b5 Rf6 3. Kxb7 Rf8 4. b6 Rxh8 $19) 2... Kf6 3. b5 (3. Nd8 cxb4 4. Nxc6 bxc6) 3... Kxf7 4. bxc6 bxc6 5. Kc7 d5 $19) 1... Kf6 ({Second line:} 1... Kf4 2. Kb8 ({not} 2. b5 $2 d5 3. Nd8 Ke5 $1 (3... Rc8+ 4. Kxb7 Rxd8 5. Kc7 $11) 4. Kb8 (4. Nxb7 d4) 4... Rd7 5. Nxb7 dxc4 $19) 2... Rc6 (2... d5 3. Kxc7 d4 4. Kxb7 d3 5. bxc5 d2 6. c6 $11) 3. b5 Rf6 4. Nd8 b6 5. Kc7 Ke4 (5... Ke5) 6. Kxd7 Kd3 7. b3 Kc3 8. Nb7 Kxb3 9. Nd6 {positional draw, for example:} Kb4 (9... Rh6) 10. Kc6 (10. Kc7) (10. Ne8) 10... Kc3 11. Kxb6 ( 11. Kd7 $11)) (1... Kg6 $4 2. Kb8 $18) 2. Nd6 (2. b5 $2 Kxf7 3. Kb8 Rc6 4. bxc6 bxc6 5. Kc7 d5 $19) 2... Ke5 {[#]} (2... cxb4 3. Ne8+ $11) 3. b5 $1 Kxd6 4. Kb8 {reciprocal zugzwang} b6 5. b3 Rc6 6. Kb7 $1 (6. bxc6 $2 Kxc6 $19) 6... Rc7+ 7. Kb8 $11 {draw by repetition.} 1/2-1/2