[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.20"]
[Round "1.1"]
[White "Do Nascimento, Jose Wallison P"]
[Black "Batista, Daniel Da Silva"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1860"]
[PlyCount "37"]
[EventDate "2013.03.20"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. O-O
dxc3 9. Nxc3 Nxc3 10. Bxc6+ bxc6 11. bxc3 O-O 12. Bg5 Qd7 13. h3 Qf5 14. Qa4
Bd7 15. Kh2 h6 16. Be3 Bxe3 17. fxe3 Rab8 18. Qxa7 Rb2 19. Rab1 0-1

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.20"]
[Round "1.2"]
[White "Pereira, Rebeca Fernanda"]
[Black "Craveiro, Luan Durigan"]
[Result "1/2-1/2"]
[ECO "A23"]
[PlyCount "46"]
[EventDate "2013.03.20"]

1. c4 e5 2. Nc3 Nf6 3. g3 Bc5 4. Bg2 c6 5. e3 d5 6. d4 exd4 7. exd4 Bb4 8. Qb3
Qe7+ 9. Nge2 dxc4 10. Qxc4 Be6 11. Qd3 O-O 12. O-O Nbd7 13. Bg5 Nb6 14. Rfe1 h6
15. Bxf6 Qxf6 16. a3 Bd6 17. Ne4 Qe7 18. Nxd6 Qxd6 19. Nf4 Bc4 20. Qc3 Rfe8 21.
b3 Bd5 22. Nxd5 Nxd5 23. Qc5 Qxc5 1/2-1/2

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.20"]
[Round "1.3"]
[White "De Matos, Vailson Lemos"]
[Black "Craveiro, Lucas Durigan"]
[Result "1/2-1/2"]
[ECO "B01"]
[BlackElo "1805"]
[PlyCount "26"]
[EventDate "2013.03.20"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 c6 5. Bc4 e6 6. Nf3 Ne7 7. O-O g6 8. Bg5
Bg7 9. Re1 O-O 10. Ne4 h6 11. Bh4 g5 12. Bg3 Nd5 13. c3 b6 1/2-1/2

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.20"]
[Round "2.1"]
[White "Batista, Daniel Da Silva"]
[Black "Craveiro, Lucas Durigan"]
[Result "0-1"]
[ECO "A00"]
[BlackElo "1805"]
[PlyCount "0"]
[EventDate "2013.03.20"]

{W.O}  0-1

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.20"]
[Round "2.2"]
[White "Craveiro, Luan Durigan"]
[Black "De Matos, Vailson Lemos"]
[Result "0-1"]
[ECO "C44"]
[PlyCount "35"]
[EventDate "2013.03.20"]

1. e4 e5 2. Nf3 Nc6 3. d3 Nf6 4. Be2 d5 5. O-O dxe4 6. dxe4 Qxd1 7. Bxd1 Nxe4
8. Re1 f5 9. Nc3 Nxc3 10. Nxe5 Nxd1 11. Nxc6+ Kf7 12. Ne5+ Kf6 13. Nf3 Nxf2 14.
Kxf2 Bc5+ 15. Kg3 h6 16. b3 Bd7 17. Bb2+ Kg6 18. Ne5+ 0-1

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.20"]
[Round "2.3"]
[White "Do Nascimento, Jose Wallison P"]
[Black "Pereira, Rebeca Fernanda"]
[Result "1/2-1/2"]
[ECO "B77"]
[WhiteElo "1860"]
[PlyCount "32"]
[EventDate "2013.03.20"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 Nf6 6. Bc4 g6 7. Be3 Bg7 8. f3
O-O 9. Bb3 Bd7 10. Qd2 Rc8 11. h4 Qa5 12. Nxc6 Rxc6 13. Nd5 Qxd2+ 14. Kxd2 Nxd5
15. exd5 Ra6 16. c3 h5 1/2-1/2

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.21"]
[Round "3.1"]
[White "Pereira, Rebeca Fernanda"]
[Black "Batista, Daniel Da Silva"]
[Result "1-0"]
[ECO "A00"]
[PlyCount "0"]
[EventDate "2013.03.20"]

{W.O.}  1-0

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.21"]
[Round "3.2"]
[White "De Matos, Vailson Lemos"]
[Black "Do Nascimento, Jose Wallison P"]
[Result "1/2-1/2"]
[ECO "D78"]
[BlackElo "1860"]
[PlyCount "71"]
[EventDate "2013.03.20"]

1. d4 d5 2. g3 g6 3. Bg2 Bg7 4. Nf3 Nf6 5. O-O O-O 6. c4 c6 7. Nc3 Bf5 8. Bf4
Nbd7 9. cxd5 cxd5 10. Rc1 e6 11. e3 Rc8 12. Nb5 Rxc1 13. Qxc1 Bd3 14. Bc7 Qa8
15. Nd6 Bxf1 16. Bxf1 Ne4 17. Kg2 Nb6 18. Qe1 f5 19. Be2 Nc4 20. Nxc4 Qc8 21.
Be5 dxc4 22. Bxg7 Kxg7 23. Qb4 a6 24. a4 c3 25. bxc3 Nxc3 26. Bc4 Ne4 27. Ne5
Re8 28. f3 Ng5 29. a5 h6 30. h4 Nh7 31. g4 Nf6 32. g5 Nd5 33. gxh6+ Kxh6 34.
Qd2 b5 35. axb6 Nxb6 36. e4+ 1/2-1/2

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.21"]
[Round "3.3"]
[White "Craveiro, Lucas Durigan"]
[Black "Craveiro, Luan Durigan"]
[Result "0-1"]
[ECO "C66"]
[WhiteElo "1805"]
[PlyCount "56"]
[EventDate "2013.03.20"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 5. Nc3 exd4 6. Nxd4 Nf6 7. O-O Be7 8.
Re1 O-O 9. Be3 Nxd4 10. Bxd4 c5 11. Bxf6 Bxf6 12. Qd3 Be6 13. Bc4 a6 14. a4 Be5
15. g3 h5 16. Bxe6 fxe6 17. f4 Bd4+ 18. Kg2 g5 19. fxg5 Rf2+ 20. Kh1 Qxg5 21.
Re2 Raf8 22. Rae1 Rf1+ 23. Kg2 h4 24. Nd1 h3+ 25. Kxh3 R8f3 26. Ne3 Rxg3+ 27.
hxg3 Qh5+ 28. Kg2 Qh1# 0-1

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.21"]
[Round "4.1"]
[White "Batista, Daniel Da Silva"]
[Black "Craveiro, Luan Durigan"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "0"]
[EventDate "2013.03.20"]

{W.O.}  0-1

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.21"]
[Round "4.2"]
[White "Do Nascimento, Jose Wallison P"]
[Black "Craveiro, Lucas Durigan"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "1860"]
[BlackElo "1805"]
[PlyCount "28"]
[EventDate "2013.03.20"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O O-O 7. h3 Bd7 8. Bg5
h6 9. Bh4 Bb6 10. Nbd2 Qe7 11. Bd5 g5 12. Bg3 Nh5 13. Bh2 Nf6 14. a4 a5 1/2-1/2

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.21"]
[Round "4.3"]
[White "Pereira, Rebeca Fernanda"]
[Black "De Matos, Vailson Lemos"]
[Result "0-1"]
[ECO "A03"]
[PlyCount "48"]
[EventDate "2013.03.20"]

1. f4 d5 2. Nf3 c5 3. Nc3 Nc6 4. e3 e6 5. Bb5 Bd7 6. O-O Nf6 7. d3 Be7 8. Ne5
d4 9. Ne4 Nxe5 10. fxe5 Bxb5 11. exf6 gxf6 12. Qf3 f5 13. Ng3 dxe3 14. Bxe3 Bc6
15. Qh5 Qd5 16. Rf2 h6 17. Re1 Rg8 18. Qxh6 O-O-O 19. Qh7 Rdf8 20. Ree2 Qxa2
21. b3 Qb2 22. Qh6 Rg6 23. Qf4 Rg4 24. Qh6 Rh8 0-1

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.22"]
[Round "5.1"]
[White "De Matos, Vailson Lemos"]
[Black "Batista, Daniel Da Silva"]
[Result "1-0"]
[ECO "A00"]
[PlyCount "0"]
[EventDate "2013.03.20"]

{W.O.}  1-0

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.22"]
[Round "5.2"]
[White "Craveiro, Lucas Durigan"]
[Black "Pereira, Rebeca Fernanda"]
[Result "1/2-1/2"]
[ECO "A37"]
[WhiteElo "1805"]
[PlyCount "47"]
[EventDate "2013.03.20"]

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 d6 6. Qc2 Nf6 7. O-O O-O 8. d3
Bf5 9. Bf4 Nb4 10. Qb3 Rc8 11. Rad1 e6 12. a3 Nc6 13. Ne4 Bxe4 14. dxe4 e5 15.
Bg5 Nd4 16. Nxd4 cxd4 17. Qxb7 Rb8 18. Qxa7 Rxb2 19. c5 dxc5 20. Qxc5 Nxe4 21.
Bxd8 Nxc5 22. Be7 Rc8 23. Rb1 Rxb1 24. Rxb1 1/2-1/2

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.22"]
[Round "5.3"]
[White "Craveiro, Luan Durigan"]
[Black "Do Nascimento, Jose Wallison P"]
[Result "1-0"]
[ECO "C78"]
[BlackElo "1860"]
[PlyCount "39"]
[EventDate "2013.03.20"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. Re1 b5 7. Bb3 Nd6 8.
Nxe5 Nxe5 9. d4 Be7 10. dxe5 Nc4 11. Qf3 Rb8 12. Nd2 O-O 13. Nxc4 bxc4 14. Bxc4
d6 15. Bf4 dxe5 16. Bxe5 g6 17. Rad1 Bd6 18. Bc3 Bb7 19. Qg4 h5 20. Qxg6# 1-0

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.22"]
[Round "6.1"]
[White "Batista, Daniel Da Silva"]
[Black "Do Nascimento, Jose Wallison P"]
[Result "0-1"]
[ECO "A00"]
[BlackElo "1860"]
[PlyCount "0"]
[EventDate "2013.03.20"]

{W.O.}  0-1

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.22"]
[Round "6.2"]
[White "Craveiro, Luan Durigan"]
[Black "Pereira, Rebeca Fernanda"]
[Result "1/2-1/2"]
[ECO "B00"]
[PlyCount "27"]
[EventDate "2013.03.20"]

1. e4 b6 2. Nf3 Bb7 3. Nc3 d6 4. Bc4 Nf6 5. d3 e6 6. O-O Be7 7. Bg5 O-O 8. Qd2
Nbd7 9. Rae1 c5 10. a4 a6 11. h4 h6 12. Bf4 Nh5 13. Bh2 Rc8 14. Qe2 1/2-1/2

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.22"]
[Round "6.3"]
[White "Craveiro, Lucas Durigan"]
[Black "De Matos, Vailson Lemos"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "1805"]
[PlyCount "61"]
[EventDate "2013.03.20"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. c3 Nxe4 6. Qe2 Nf6 7. d4 Bb6 8.
dxe5 Nd5 9. Rd1 a6 10. Bc4 Nde7 11. Ng5 O-O 12. Qh5 h6 13. Nxf7 Rxf7 14. Bxf7+
Kh7 15. Rd3 d5 16. Rg3 Qf8 17. Rf3 Bg4 18. Qxg4 Nxe5 19. Bg6+ N7xg6 20. Rxf8
Rxf8 21. Qg3 Bxf2+ 22. Qxf2 Rxf2 23. Kxf2 Nd3+ 24. Ke3 Nxc1 25. Kd2 Nf4 26.
Kxc1 Nxg2 27. Nd2 g5 28. Nb3 b6 29. Kd2 Kg6 30. Nd4 Nf4 31. Re1 1-0

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.23"]
[Round "7.1"]
[White "Craveiro, Lucas Durigan"]
[Black "Batista, Daniel Da Silva"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "1805"]
[PlyCount "0"]
[EventDate "2013.03.20"]

{W.O.}  1-0

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.23"]
[Round "7.2"]
[White "De Matos, Vailson Lemos"]
[Black "Craveiro, Luan Durigan"]
[Result "1/2-1/2"]
[ECO "D58"]
[PlyCount "62"]
[EventDate "2013.03.20"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 b6 8. Rc1
Bb7 9. Bd3 dxc4 10. Bxc4 Nd5 11. Nxd5 Bxh4 12. Nxc7 Bxf3 13. Qxf3 Qxc7 14. O-O
Nd7 15. g3 Bf6 16. Bd5 Qd8 17. Bxa8 Qxa8 18. Qxa8 Rxa8 19. Rc7 Rd8 20. Rxa7 e5
21. dxe5 Nxe5 22. a4 Rd2 23. b4 Nc6 24. Ra6 Nxb4 25. Rxb6 Nd3 26. a5 Ra2 27. a6
Kh7 28. h4 h5 29. Kg2 Ne5 30. Rc1 Nd3 31. Rf1 Ne5 1/2-1/2

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.23"]
[Round "7.3"]
[White "Pereira, Rebeca Fernanda"]
[Black "Do Nascimento, Jose Wallison P"]
[Result "1-0"]
[ECO "A03"]
[BlackElo "1860"]
[PlyCount "67"]
[EventDate "2013.03.20"]

1. f4 Nf6 2. Nf3 g6 3. Nc3 d5 4. e3 Bg7 5. d4 O-O 6. Bd3 Bg4 7. O-O Nbd7 8. h3
Bxf3 9. Qxf3 Nb6 10. Bd2 Rc8 11. Rae1 c5 12. b3 c4 13. Be2 e6 14. g4 Nbd7 15.
bxc4 dxc4 16. g5 Nh5 17. Qg2 f6 18. h4 b6 19. Bxh5 gxh5 20. Nb5 fxg5 21. hxg5
c3 22. Bc1 Rf5 23. Nd6 Nf8 24. Nxf5 exf5 25. d5 Rc4 26. Rd1 Qd6 27. Qh3 Ra4 28.
Qxf5 Rxa2 29. Rf2 b5 30. e4 Qg6 31. Qxg6 hxg6 32. e5 Kf7 33. e6+ Ke7 34. Re2
1-0

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.23"]
[Round "8.1"]
[White "Batista, Daniel Da Silva"]
[Black "Pereira, Rebeca Fernanda"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "0"]
[EventDate "2013.03.20"]

{W.O.}  0-1

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.23"]
[Round "8.2"]
[White "Do Nascimento, Jose Wallison P"]
[Black "De Matos, Vailson Lemos"]
[Result "1/2-1/2"]
[ECO "A08"]
[WhiteElo "1860"]
[PlyCount "36"]
[EventDate "2013.03.20"]

1. g3 d5 2. Bg2 c5 3. Nf3 Nc6 4. b3 e6 5. Bb2 Bd6 6. O-O Nf6 7. d4 cxd4 8. Nxd4
Nxd4 9. Bxd4 O-O 10. Bxf6 Qxf6 11. Nd2 Bd7 12. Ne4 dxe4 13. Qxd6 Bc6 14. Qb4
Qg6 15. Rad1 f5 16. c4 Rad8 17. Qc3 Qf6 18. Qe3 b6 1/2-1/2

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.23"]
[Round "8.3"]
[White "Craveiro, Luan Durigan"]
[Black "Craveiro, Lucas Durigan"]
[Result "1-0"]
[ECO "A04"]
[BlackElo "1805"]
[PlyCount "49"]
[EventDate "2013.03.20"]

1. Nf3 Nc6 2. g3 e5 3. Bg2 Nf6 4. d4 exd4 5. Nxd4 Bc5 6. Be3 Ng4 7. Nc3 Nxe3 8.
fxe3 O-O 9. O-O Qg5 10. Rf4 Re8 11. Ne4 Qe5 12. Nxc5 Qxc5 13. Qd3 Re5 14. c4
Nb4 15. Qc3 g6 16. a3 Nc6 17. Bd5 Re7 18. Raf1 Nd8 19. b4 Qd6 20. Nb5 Qe5 21.
Rxf7 Nxf7 22. Rxf7 Qxc3 23. Rxe7+ Kf8 24. Rf7+ Ke8 25. Nxc3 1-0

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.24"]
[Round "9.1"]
[White "Craveiro, Luan Durigan"]
[Black "Batista, Daniel Da Silva"]
[Result "1-0"]
[ECO "A00"]
[PlyCount "0"]
[EventDate "2013.03.20"]

{W.O.}  1-0

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.24"]
[Round "9.2"]
[White "Craveiro, Lucas Durigan"]
[Black "Do Nascimento, Jose Wallison P"]
[Result "1/2-1/2"]
[ECO "C89"]
[WhiteElo "1805"]
[BlackElo "1860"]
[PlyCount "39"]
[EventDate "2013.03.20"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3
d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15.
Bg5 Bg4 16. Qd3 Qh5 17. Be3 Rfe8 18. Nd2 Bf5 19. Qe2 Bg4 20. Qd3 1/2-1/2

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.24"]
[Round "9.3"]
[White "De Matos, Vailson Lemos"]
[Black "Pereira, Rebeca Fernanda"]
[Result "1/2-1/2"]
[ECO "E70"]
[PlyCount "36"]
[EventDate "2013.03.20"]

1. d4 g6 2. c4 Bg7 3. Nc3 Nf6 4. e4 d6 5. Bd3 O-O 6. Nge2 c6 7. O-O e5 8. f3
exd4 9. Nxd4 Qb6 10. Be3 Ng4 11. fxg4 Bxd4 12. Bxd4 Qxd4+ 13. Rf2 Bxg4 14. Be2
Qxd1+ 15. Rxd1 Bxe2 16. Rxe2 Nd7 17. Rxd6 Ne5 18. c5 Kg7 1/2-1/2

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.24"]
[Round "10.1"]
[White "Batista, Daniel Da Silva"]
[Black "De Matos, Vailson Lemos"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "0"]
[BlackElo "0"]
[PlyCount "0"]
[EventDate "2013.03.20"]

*

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.24"]
[Round "10.2"]
[White "Pereira, Rebeca Fernanda"]
[Black "Craveiro, Lucas Durigan"]
[Result "0-1"]
[ECO "C27"]
[BlackElo "1805"]
[PlyCount "16"]
[EventDate "2013.03.20"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Be7 4. Nge2 d6 5. d3 O-O 6. Be3 c6 7. Qd2 d5 8. Bb3
d4 0-1

[Event "III IRT de XADREZ de BARRINHA 2013"]
[Site "BARRINHA/SP"]
[Date "2013.03.24"]
[Round "10.3"]
[White "Do Nascimento, Jose Wallison P"]
[Black "Craveiro, Luan Durigan"]
[Result "1/2-1/2"]
[ECO "C68"]
[WhiteElo "1860"]
[PlyCount "46"]
[EventDate "2013.03.20"]

1. Nc3 e5 2. e4 Bc5 3. Bb5 a6 4. Bc4 Nf6 5. Nf3 Nc6 6. O-O O-O 7. d3 d6 8. Bg5
h6 9. Bxf6 Qxf6 10. Nd5 Qg6 11. Nxc7 Ra7 12. Nh4 Qg5 13. Nf3 Qg6 14. a4 Bh3 15.
Ne1 Bg4 16. Qd2 Qh5 17. h3 Be2 18. g4 Bxg4 19. hxg4 Qxg4+ 20. Kh2 Qh4+ 21. Kg1
Qg4+ 22. Kh1 Qh3+ 23. Kg1 Qg4+ 1/2-1/2