[Event "Silver Lake Open 2021"] [Site "Veliko Gradiste"] [Date "2021.06.26"] [Round "5.1"] [White "Sadhwani, Raunak"] [Black "Nihal Sarin"] [Result "1/2-1/2"] [ECO "B31"] [WhiteElo "2555"] [BlackElo "2620"] [Annotator "TA"] [PlyCount "37"] [EventDate "2021.06.22"] [EventType "swiss"] [EventCountry "SRB"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,37,23,14,0,0,0,13,13,9,15,19,15,30,10,26,0,0,-8,-11,-11,-20,-54]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. Re1 O-O 7. d4 cxd4 8. cxd4 d5 9. e5 Ne4 10. Be3 {B31: Sicilian: 2...Nc6 3 Bb5 g6.} Qb6 11. Bxc6 Qxc6 12. Nfd2 {[#]} f5 $146 {[#] aiming for ...f4.} ({Predecessor:} 12... Nxd2 13. Qxd2 f6 14. Nc3 fxe5 15. dxe5 e6 16. Rac1 Qa6 17. Bh6 Bxh6 18. Qxh6 Qb6 {1/2-1/2 (48) Kollars,D (2592)-Shirov,A (2677) Chess.com INT 2020}) 13. exf6 exf6 14. Nxe4 dxe4 15. d5 Qc4 16. Na3 Qd3 {The position is equal.} 17. Qxd3 exd3 18. Nb5 {Nc7 is the strong threat.} Bf5 19. Bf4 {Weighted Error Value: White=0.04/ Black=0.00} 1/2-1/2 [Event "Silver Lake Open 2021"] [Site "Veliko Gradiste"] [Date "2021.06.26"] [Round "5.2"] [White "Petrosyan, Manuel"] [Black "Strikovic, Aleksa"] [Result "1-0"] [ECO "A88"] [WhiteElo "2625"] [BlackElo "2469"] [Annotator "TA"] [PlyCount "68"] [EventDate "2021.06.22"] [EventType "swiss"] [EventCountry "SRB"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 23,68,7,32,32,22,16,25,25,54,55,54,57,56,56,56,56,61,61,56,56,62,64,68, 68,67,56,56,63,55,5,83,89,71,54,80,36,33,47,44,37,35,47,46,46,45,40,29]} 1. d4 d6 2. Nf3 f5 3. g3 Nf6 4. Bg2 g6 5. O-O Bg7 6. c4 O-O 7. Nc3 c6 8. d5 e5 9. dxe6 Bxe6 10. b3 Na6 11. Bb2 Qe7 12. Ng5 Rad8 13. Nxe6 {A88: Dutch Defence: Leningrad System: 5 Nf3 0-0 6 0-0 d6 7 Nc3 c6.} Qxe6 14. Qd2 Nc5 15. Rad1 { White has an edge.} Nfe4 16. Nxe4 Nxe4 17. Bxe4 Qxe4 18. Bxg7 Kxg7 {[#]} 19. Qa5 $146 ({Predecessor:} 19. Qd4+ Qxd4 20. Rxd4 Rfe8 21. e3 Re4 22. Rfd1 { 1/2-1/2 (22) Ortinau,P (2070)-Wohlfart,P (2111) Germany 2017}) 19... Rd7 (19... Qxe2 $6 20. Rde1 $16) 20. e3 b6 $1 {[%CAl Rb6a5]} 21. Qa3 Qe5 22. Rd4 g5 23. Rfd1 {[%CAl Rd4d6]} Rf6 24. b4 f4 25. exf4 gxf4 26. Qf3 {[#] Hoping for Qg4+.} Rdf7 (26... fxg3 $11 27. Qg4+ {[%mdl 64] Double Attack} Kh8 28. hxg3 (28. Qxd7 gxf2+ 29. Kf1 Re6 $15) 28... Rg7) 27. g4 $16 ({Reject} 27. Qxc6 $6 fxg3 28. Qg2 (28. Rg4+ Kh8 $17) 28... Rxf2 $11) 27... Rg6 28. Kh1 Re6 29. h3 ({Of course not } 29. Qxc6 f3 $11) 29... c5 $1 {[%CAl Rc5d4] White is slightly better.} 30. bxc5 dxc5 31. Rd7 Ree7 32. R7d5 Qe4 33. Kg2 h6 $1 34. Rc1 Qe2 $1 {[%mdl 32768] Weighted Error Value: White=0.05/Black=0.12. Loss on time!?} 1-0 [Event "Silver Lake Open 2021"] [Site "Veliko Gradiste"] [Date "2021.06.26"] [Round "5.3"] [White "Puranik, Abhimanyu"] [Black "Markovic, Zoran S"] [Result "1/2-1/2"] [ECO "B31"] [WhiteElo "2589"] [BlackElo "2315"] [Annotator "TA"] [PlyCount "44"] [EventDate "2021.06.22"] [EventType "swiss"] [EventCountry "SRB"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,44,5,4,7,16,0,0,0,0,0,0,0,0,0,0,0,9,18,16,0,0,0,0,0,0,0,0,-23,-25]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. O-O Bg7 6. Re1 Nh6 7. c3 O-O 8. d4 cxd4 9. cxd4 d5 10. e5 {B31: Sicilian: 2...Nc6 3 Bb5 g6.} f6 11. e6 $1 { [%mdl 4] is more profitable than 11.exf6 at the moment.} Qd6 12. Qe2 {The position is equal.} a5 13. b3 a4 14. Ba3 Qc7 15. Nc3 axb3 16. axb3 {[#]} Ba6 $146 ({Predecessor:} 16... Nf5 17. Bc5 Bb7 18. b4 Rfb8 19. b5 Rxa1 20. Rxa1 cxb5 21. Nxb5 Qf4 22. Nc3 Bc6 {1/2-1/2 (36) Jensen,C (2360)-Loeffler,W (2340) ICCF email 2016}) 17. Qc2 {[#] aiming for Nxd5!} Rfc8 18. Bc5 Nf5 19. Ra4 Bb5 20. Rxa8 Rxa8 21. Nxb5 cxb5 22. Qd2 Bf8 {Not much happened in this game. Weighted Error Value: White=0.04/Black=0.01} 1/2-1/2 [Event "Silver Lake Open 2021"] [Site "Veliko Gradiste"] [Date "2021.06.26"] [Round "5.4"] [White "Radovanovic, Nikola"] [Black "Sedlak, Nikola"] [Result "1/2-1/2"] [ECO "D31"] [WhiteElo "2395"] [BlackElo "2519"] [Annotator "TA"] [PlyCount "50"] [EventDate "2021.06.22"] [EventType "swiss"] [EventCountry "SRB"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,50,11,2,0,13,1,0,-3,3,10,10,8,13,5,0,0,6,2,24,22,14,-13,-17,-43,-53, -48,-10,-37,-41,-148,-143,-174,-178,-178,-143,-273,-274,-258,-242,-253,-233, -229,-229]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. b3 Nbd7 6. Bb2 {D31: Queen's Gambit Declined: Semi-Slav without ...Nf6 (+ Marshall Gambit and Noteboom) and Exchange Variation lines without ...Nf6.} Bd6 7. Bd3 $1 {[%mdl 4] is recently more successful than 7.Nf3.} O-O 8. Nge2 {The position is equal.} b6 9. O-O Bb7 10. Ng3 Re8 11. Rc1 Rc8 {[#]} 12. Re1 $146 ({Predecessor:} 12. cxd5 cxd5 13. Qe2 a6 14. a4 Nb8 15. f4 Qe7 16. Nh1 Rc7 17. Nf2 Rec8 18. Nb1 Rxc1 19. Bxc1 {1-0 (47) Bosman,M (2353)-Kafka,G (2061) Novi Sad 2016}) 12... Bf8 13. Bb1 c5 14. cxd5 exd5 15. dxc5 bxc5 16. Qd2 g6 17. Rcd1 h5 18. h3 Bh6 19. Qc2 (19. f4 $15) 19... d4 $1 $17 20. Nb5 {[#] Nd6 is the strong threat.} Qb6 21. Na3 {[%CAl Re3d4]} Qc6 {[%csl Gb7][%CAl Rc6g2]} 22. f4 (22. e4 $17 { was the only defense.}) 22... dxe3 $19 23. f5 {[#]} e2 $1 24. Rxe2 Rxe2 25. Qxe2 Re8 {Weighted Error Value: White=0.24/Black=0.03} 1/2-1/2 [Event "Silver Lake Open 2021"] [Site "Veliko Gradiste"] [Date "2021.06.26"] [Round "5.5"] [White "Hasanzade, Toghrul"] [Black "Ter-Sahakyan, Samvel"] [Result "0-1"] [ECO "B90"] [WhiteElo "2317"] [BlackElo "2644"] [Annotator "TA"] [PlyCount "56"] [EventDate "2021.06.22"] [EventType "swiss"] [EventCountry "SRB"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,56,20,20,4,30,24,36,25,28,0,0,0,0,0,0,-7,0,-29,0,0,14,0,15,0,0,0,0,0, 0,0,0,0,0,-8,-4,-398,-394,-388,-381,-380,-375,-947,-932,-965,-1014,-1001,-985, -928,-893]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Qd3 { B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} g6 7. Bg5 Bg7 8. O-O-O {White is slightly better.} h6 $5 {[%mdl 4] An interesting side line.} 9. Bh4 {[#]} (9. Bxf6 $5 Bxf6 10. Nd5 $11) 9... Nc6 $146 ({ Predecessor:} 9... Bd7 10. Nd5 g5 11. Bg3 Nc6 12. Nxc6 bxc6 13. Nxf6+ Bxf6 14. e5 Bxe5 15. Bxe5 dxe5 {1-0 (27) Sevian,S (2660)-Lu,S (2615) Lichess.org INT 2020}) 10. Nxc6 bxc6 11. e5 Nd5 12. Nxd5 cxd5 13. exd6 Qxd6 {Hoping for ...Rb8. } 14. Qxd5 Qf4+ 15. Qd2 Qc7 16. Bg3 Qb6 {[%csl Gg7][%CAl Rb6b2]} 17. c3 Be6 18. Bd3 $1 O-O 19. Rhe1 Bxa2 20. Rxe7 Rfc8 {Black wants to play ...Qa5.} 21. Be4 Qb4 {[%CAl Rg7c3]} 22. Bxa8 $4 {[%mdl 8192] [#] White does not recover from this.} (22. Qd6 $11 Bxc3 23. Qxb4 Bxb4+ 24. Rc7) 22... Rxc3+ $1 $19 {[%mdl 512] } 23. Qxc3 Bxc3 {[%csl Gc3][%CAl Rb4b2]} 24. Re2 Bf6 25. Be5 $2 (25. Bd6 Qa4 26. Rde1) 25... Bxe5 {Black is clearly winning.} 26. Rd8+ Kg7 {Threatens to win with ...Bf4+.} 27. Rxe5 Qf4+ {[%mdl 64] [#] Double Attack} 28. Re3 Qc7+ { [%mdl 64] Double Attack. Weighted Error Value: White=0.56/Black=0.02} 0-1 [Event "Silver Lake Open 2021"] [Site "Veliko Gradiste"] [Date "2021.06.26"] [Round "5.6"] [White "Sadikhov, Ulvi"] [Black "Risteski, Emil"] [Result "1-0"] [ECO "A37"] [WhiteElo "2490"] [BlackElo "2367"] [Annotator "TA"] [PlyCount "63"] [EventDate "2021.06.22"] [EventType "swiss"] [EventCountry "SRB"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 16,63,0,0,13,11,172,179,216,236,331,340,299,308,289,281,300,308,281,225, 215,213,356,264,304,317,318,312,366,382,377,378,361,306,898,887,1152,1130,1151, 1115,1800,688,666,647,1826,1803,1494,1386,1326,1289]} 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 e6 6. d4 cxd4 7. Nb5 d5 8. cxd5 Qa5+ 9. Nd2 Qxb5 {A37: Symmetrical English vs ...g6:4 Bg2 Bg7 5 Nf3.} 10. dxc6 {aiming for Qb3.} Nf6 $2 {[#]} (10... Ne7 $11) 11. a4 $1 $18 {[%CAl Ra4b5]} Qb4 {[#]White is clearly better.} 12. b3 $1 {Strongly threatening Ba3.} Nd5 (12... O-O $142 13. Ba3 { [%mdl 64] Skewer} Qb6) 13. Ba3 Qa5 14. O-O bxc6 15. Nc4 Qc7 16. Nd6+ Kd8 {[#]} 17. e4 $146 ({Predecessor:} 17. Rc1 Rb8 18. Nc4 c5 19. e4 Nb4 20. e5 Ba6 21. Re1 Bxc4 22. Rxc4 Bxe5 23. Qd2 {1-0 (86) Fressinet,L (2687)-Kostenko,P (2476) Almaty 2016}) 17... Nc3 18. Qf3 Ba6 (18... Rf8 $142) 19. Nxf7+ {[%mdl 64] Double Attack} Kd7 {Threatens to win with ...Be2.} 20. Nxh8 Rxh8 21. Rfe1 Kc8 22. e5 c5 23. Qg4 Re8 24. b4 Bxe5 $2 (24... Bf8 25. bxc5 Bxc5 26. Bxc5 Qxc5) 25. f4 {White is clearly winning.} Bd6 26. bxc5 Bxc5 27. Rxe6 {[%CAl Re6e8]} d3+ 28. Bxc5 (28. Kh1 $142 Rxe6 29. Qxe6+ {[%mdl 64] Double Attack} Kd8 30. Qg8+ Kd7 31. Qxh7+ Kc8 32. Qg8+ Kd7 33. Qh7+ Kc8 34. Qg8+ Kd7 35. Qg7+ Kc8 36. Qxc3) 28... Qxc5+ 29. Kh1 Kd8 30. Rxe8+ Kxe8 31. Qe6+ {[%mdl 64] Double Attack} Qe7 32. Qc6+ {[%mdl 64] Double Attack. Black did not feel at home in the position after the opening. Weighted Error Value: White=0.39/Black=0.53} 1-0 [Event "Silver Lake Open 2021"] [Site "Veliko Gradiste"] [Date "2021.06.26"] [Round "5.7"] [White "Makhnev, Denis"] [Black "Abramovic, Bosko"] [Result "1-0"] [ECO "D17"] [WhiteElo "2480"] [BlackElo "2334"] [Annotator "TA"] [PlyCount "43"] [EventDate "2021.06.22"] [EventType "swiss"] [EventCountry "SRB"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,43,16,12,12,12,20,61,43,39,12,4,0,26,21,15,21,49,11,20,22,17,-7,34, 37,38,40,32,29,51,43,51,53]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 Nbd7 {6...Nbd7 scores better than 6...e6.} 7. Nxc4 Qc7 8. g3 {D17: Slav Defence: 5 a4 Bf5: Lines with 6 Nh4 and 6 Ne5.} Rd8 9. Bf4 Qc8 10. Bg2 Be6 {[#] } 11. Na3 $146 ({Predecessor:} 11. Nd2 g6 12. O-O Bg7 13. Qc2 O-O 14. e4 Nb6 15. a5 Nc4 16. Nxc4 Bxc4 17. Rfd1 {1-0 (42) Sarana,A (2663)-Jobava,B (2604) Moscow 2019}) 11... Nc5 12. e3 Bh3 13. O-O Bxg2 14. Kxg2 e6 15. Qc2 Na6 16. Bg5 Be7 17. Rab1 h6 18. Bxf6 Bxf6 19. b4 Be7 20. Na2 O-O 21. Nc4 Nb8 22. Nc1 { Weighted Error Value: White=0.08/Black=0.10} 1-0 [Event "Silver Lake Open 2021"] [Site "Veliko Gradiste"] [Date "2021.06.26"] [Round "5.8"] [White "Martin Duque, Jesus"] [Black "Kowalski, Igor"] [Result "1/2-1/2"] [ECO "A06"] [WhiteElo "2449"] [BlackElo "2322"] [Annotator "TA"] [PlyCount "54"] [EventDate "2021.06.22"] [EventType "swiss"] [EventCountry "SRB"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,54,13,35,23,33,13,50,25,39,-5,0,-35,-40,-42,-27,-62,-57,-73,-81,-85, -59,-153,-153,-161,-137,-157,-160,-149,-10,-200,-108,-126,0,0,7,-139,-138,-151, -47,-44,0,-7,0,0,0,-58,-73]} 1. Nf3 d5 2. b3 Bg4 3. e3 Nd7 4. Bb2 Ngf6 5. h3 Bxf3 6. Qxf3 {A06: Réti Opening: 1 Nf3 d5.} c6 7. g4 e5 8. c4 {White is slightly better.} Bd6 {[#]} 9. Nc3 $146 {[%CAl Rc4d5]} ({Predecessor:} 9. g5 Ne4 10. cxd5 Nxg5 11. Qg2 cxd5 12. Qxd5 Qe7 13. Rg1 Ne6 14. Qxb7 O-O 15. Nc3 Rfb8 16. Qf3 Re8 17. Bb5 Kh8 18. Nd5 Qd8 19. Qxf7 Ng5 {0-1 (19) Owens,J (2189) -Badger,J (1808) ICCF email 2016}) 9... d4 $1 {[%CAl Rd4c3]} 10. Ne4 Nxe4 11. Qxe4 dxe3 12. fxe3 Qh4+ 13. Ke2 O-O 14. Bg2 Nc5 15. Qf3 (15. Qc2 $1 $15) 15... Rae8 $1 $17 16. Raf1 e4 $36 {[%mdl 2048] White is under strong pressure.} 17. Qf5 Re6 $1 18. Bd4 {[#]} g6 19. Qf2 $2 (19. Bf6 $1 $11) 19... Bg3 20. Qg1 {[#]} Nd3 (20... Qd8 $1 $17 21. h4 (21. Bxc5 $2 Qd3+ 22. Kd1 Qb1+ 23. Ke2 Qd3+ 24. Kd1 Rd8 $17) 21... Na6) 21. Bxe4 $1 $11 Nf2 {[#]} 22. Bb1 (22. Bxc6 $1 $11 { remains equal.} bxc6 23. Rxf2) 22... Nxh1 $17 23. Qxh1 b6 ({Black should play} 23... Qd8 $17 {And now ...Qxd4 would win.} 24. Kd1 Be5 25. Bxe5 Rxe5) 24. Be4 $15 c5 25. Bc3 {Threatening Bd5.} Be5 {White must now prevent ...Bxc3.} 26. Bd5 Re7 27. Bxe5 (27. Bxf7+ $11 Rfxf7 28. Qa8+ Kg7 29. Rxf7+ Kxf7 30. Qd5+ { [%mdl 64] Double Attack} Ke8 31. Bxe5 Qxh3 32. Qc6+ Kf7 33. Qf6+ Ke8 34. Qc6+ Kf8 35. Qf6+ Ke8 36. Qc6+) 27... Rxe5 {Weighted Error Value: White=0.38/ Black=0.28} 1/2-1/2 [Event "Silver Lake Open 2021"] [Site "Veliko Gradiste"] [Date "2021.06.26"] [Round "5.9"] [White "Vetokhin, Savva"] [Black "Agmanov, Zhandos"] [Result "1/2-1/2"] [ECO "D02"] [WhiteElo "2324"] [BlackElo "2404"] [Annotator "TA"] [PlyCount "58"] [EventDate "2021.06.22"] [EventType "swiss"] [EventCountry "SRB"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,58,24,29,12,28,32,16,12,44,21,45,11,14,0,10,14,19,-4,-12,-12,33,-32,0, -20,-14,-12,-18,-22,-15,-15,-15,-48,-38,-29,-20,-24,-12,-52,-17,-13,-14,-31,0, 0,0,0,0,0,0,0,8]} 1. Nf3 d5 2. g3 Nd7 3. d4 Nb6 4. Bg2 Bf5 5. O-O e6 6. Nbd2 { D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Be7 7. c4 c6 8. b3 Nf6 9. Bb2 O-O 10. Ne5 Nbd7 11. Re1 {[#]} Qc7 $146 ({Predecessor:} 11... a5 12. Nxd7 Qxd7 13. Nf3 h6 14. Ne5 Qd8 15. Qc1 a4 16. cxd5 exd5 17. Ba3 Ne4 18. Bxe4 Bxe4 19. Bxe7 Qxe7 {0-1 (41) Simacek,P (2439)-Slaby,J (2391) Olomouc 2004}) 12. Nxd7 Qxd7 13. e4 dxe4 14. Nxe4 Rfd8 15. Qd2 (15. Nd2 $14) 15... Qc7 16. Rad1 Nxe4 17. Bxe4 Bxe4 18. Rxe4 Bf6 19. Re2 Rd7 20. Qc2 Rad8 { [%CAl Rf6d4]} 21. Red2 g6 22. Rd3 Qa5 23. R3d2 Qh5 ({Don't go for} 23... Qxa2 $2 24. Ra1 $18) 24. Kg2 Bg7 25. Bc3 Rd6 26. h3 {The position is equal.} R6d7 27. Qe4 Qg5 28. Rd3 h5 29. Bd2 Qf6 {Weighted Error Value: White=0.15/Black=0.10 } 1/2-1/2 [Event "Silver Lake Open 2021"] [Site "Veliko Gradiste"] [Date "2021.06.26"] [Round "5.10"] [White "Megalios, Konstantinos"] [Black "Sterck, Arno"] [Result "1/2-1/2"] [ECO "B13"] [WhiteElo "2390"] [BlackElo "2319"] [Annotator "TA"] [PlyCount "37"] [EventDate "2021.06.22"] [EventType "swiss"] [EventCountry "SRB"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,37,5,26,24,36,47,66,56,63,60,60,64,57,22,28,14,12,-26,-33,-23,-24, -52,-33,-25,-19,-29,-35,-12]} 1. c4 c6 2. e4 d5 3. exd5 cxd5 4. d4 Nf6 5. Nc3 Nc6 6. Nf3 Be6 7. c5 {B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack.} Bg4 8. Bb5 Rc8 9. h3 {White is slightly better.} Bxf3 10. Qxf3 g6 11. O-O Bg7 {[#]} 12. Re1 $146 (12. Bg5 {with more complications.} O-O 13. Rfd1 e6 14. Bh4 h6 15. a3) ({Predecessor:} 12. Bf4 O-O 13. Rfd1 e6 14. Rab1 Nd7 15. Ne2 Qa5 16. a4 a6 17. b4 Qd8 18. Bxc6 bxc6 {1/2-1/2 (26) Ekdyshman,M (2371) -Savchenko,B (2596) Riga 2014}) 12... O-O 13. Bxc6 (13. Be3 {seems wilder.} Re8 14. Rad1 e5 15. dxe5 Rxe5 16. Ba4) 13... bxc6 14. Bf4 Nd7 15. Rad1 Re8 16. Qg3 e5 17. dxe5 Nxc5 18. h4 Ne6 19. Bc1 {Weighted Error Value: White=0.08/Black=0. 05} 1/2-1/2