Opening Repertoire Filter
My Databases
Log in
Register
Games
Openings
Puzzles
Tournaments
Players
News
Beginners
My Databases
Games
Top games
Annotated games
Ten Classics
Top 250
Most viewed games
Game Of The Week
ChessSpider!
Explorer
Novelties
Search Openings By Name/ECO
Latest Games In My Openings
Chess Delight
Endgames
Puzzles
Checkmates - Advanced
Chess Fun Quiz
Loyd on Saturday
Top tournaments in...
All-time top tournaments
Tournament Explorer
32 Classics
Portrait of a World Champion
Top players in...
Top players of all time
Player Profile
Player Explorer
Elo Calculator
News
Latest games
Checkmates in one
Checkmates in two
Checkmates in three
Twenty-four miniatures
Player Profile
Player:
(Eg:
Carlsen,Magnus
)
Silber, Kevin
FIDE
:
FIDE Card
Years
:
2011-2019
Number of games
:
181
Number of wins
:
74
Number of draws
:
39
Number of losses
:
68
White score
:
52/93 (55.91% - Average Elo: 1727.16)
Black score
:
41½/88 (47.16% - Average Elo: 1774.18)
Rating progression
Games
White wins
White draws
White losses
Black wins
Black draws
Black losses
Top wins
Silber, Kevin (1992) - Hoellmann, Ludger (2151), Oberliga Nord W 1718, Germany (C68) - 2018
Silber, Kevin (2205) - Schmekel, Florian (2106), Youth District Germany, Wuerzburg (A05) - 2018
Silber, Kevin (1836) - Nielsen, Lars (2098), Niedersachsen-ch op, Verden (B02) - 2016
Roseneck, Jonas (2205) - Silber, Kevin (2033), GER-chT U16, Walldorf (C63) - 2017
Liebig, Stefan (2098) - Silber, Kevin (1992), Oberliga Nord W 1718, Germany (A00) - 2018
Vuckovic, Zarko (2098) - Silber, Kevin (2033), GER-chT U16, Walldorf (C45) - 2017
Silber, Kevin - ? (87)
Browning, Alex (1/2)
Pommerenke, Kayonzo (2/2)
Tiarks, Jann Christian (0/2)
Von Estorff, Jacob (1½/2)
Wurst, Maximilian (1½/2)
Zimmer, Luca (2/2)
Balazs, Balint (1/1)
Bergauz, Noam (0/1)
Bergleiter, Max (1/1)
Bethke, Robert (1/1)
Biastoch, Bennet (0/1)
Boehning, Kilian (0/1)
Bohnstorff, Michael (½/1)
Bossert, Moritz (1/1)
Brinkers, Niklas (1/1)
Brunner, Wilken (1/1)
Carnot, Luca (0/1)
Delere, Adrian (½/1)
Faerber, David (½/1)
Friedrich, Robert (1/1)
Fuhrmann, Aeke (½/1)
Gallasch, Jonas (1/1)
Graf, Lucas (0/1)
Grossmann, Kevin (½/1)
Gruender, Michael (½/1)
Hausdorf, Lars (½/1)
Herrmann, Andreas (½/1)
Hinrichs, Niklas (1/1)
Hoeffer, David (0/1)
Hoellmann, Ludger (1/1)
Hoffmann, Simon (0/1)
Huruglica, Emre (1/1)
Issing, Peter (½/1)
Kalina, Joshua (½/1)
Kartsev, Nikolaj (½/1)
Kesselmeier, Kevin (1/1)
Keyser, Philipp (1/1)
Kiesel, Lucas (1/1)
Kowalski, Ben Wito (0/1)
Krallmann, Matthias (½/1)
Kreutz, Jonas (1/1)
Kunath, Tim (½/1)
Laith, Kasib (½/1)
Langer, Moritz (½/1)
Lohr, Maximilian (1/1)
Margraf, Daniel (0/1)
Meier Hoffmann, Daniel (0/1)
Merx, Florian (0/1)
Meyer, Heinz Dieter (1/1)
Morio, Estelle (0/1)
Nguyen, Ha Thanh (0/1)
Nielsen, Lars (1/1)
Niewrzol, Anton (1/1)
Oberhofer, Cedric (0/1)
Ovsepyan, Arshak (0/1)
Petersen, Marcel (0/1)
Philippi, Aidan (0/1)
Piskaykin, Bogdan (0/1)
Poelig, Juergen (0/1)
Poetsch, Leonore (0/1)
Ratay, Meike (1/1)
Ravina, David (½/1)
Rein, Joachim (0/1)
Reuker, Matthias (½/1)
Sauer, Annika (0/1)
Sawadkuhi, Massoud Amir (½/1)
Schluckner, Paul Leopold (1/1)
Schmekel, Florian (1/1)
Schmidt, Alexandra (½/1)
Schubert, Matthias (0/1)
Schumacher, Ole (½/1)
Schumacher, Simon (1/1)
Schumann, Rabea (1/1)
Tenne, Fabian (1/1)
Thumm, Niklas (1/1)
Urban, Konstantin (0/1)
Von Jan, Lena (1/1)
Wagner, Leopold Franziskus (1/1)
Weisshorn, Lasse (0/1)
Weller, Uli (½/1)
Wemssen, Lothar (1/1)
Wendler, David (0/1)
Wiechmann, Gerd (1/1)
Wiesner, Alexander (1/1)
Woellermann, Ludger (½/1)
Zasko, Grigory (1/1)
Zhong, Xianghui (1/1)
? - Silber, Kevin (84)
Focke, Adrian (1/2)
Grund, Melanie (1½/2)
Vuckovic, Zarko (1½/2)
Wurst, Maximilian (1½/2)
Ackermann, Constantin (½/1)
Aden, Meino (1/1)
Arndt, Magnus (0/1)
Askerov, Imamali (1/1)
Bold, Andre (1/1)
Brosig, Boris (0/1)
Buehrmann, Torsten (0/1)
Colbow, Collin (0/1)
Dathe, Frederick (0/1)
Eickhoff, Hermann (0/1)
Engel, Luis (0/1)
Engel, Robert (0/1)
Erofeev, Anastasia (1/1)
Ewert, Stefan (1/1)
Fischer, Maxi (0/1)
Garbuz, Vitaliy (0/1)
Henning, Marvin (½/1)
Hinrichs, Niklas (0/1)
Hoffmann, Simon (1/1)
Hoppe, Michael (½/1)
Hund, Sarah (1/1)
Kanzow, Alexander (1/1)
Karsay, Pascal (0/1)
Kasueschke, Lars (1/1)
Koehler, Inken (0/1)
Kololli, Martin (0/1)
Kuenitz, Bernhard (1/1)
Kueppers, Timo (0/1)
Laubrock, Paul (0/1)
Liebig, Stefan (1/1)
Maetzkow, Maximilian Paul (0/1)
Merx, Florian (1/1)
Meyling, Lennart (0/1)
Muckle, Julius (0/1)
Muckle, Richard (½/1)
Muehlpfordt, Thomas (1/1)
Neukirchner, Pascal (0/1)
Nguyen, Anh Van (0/1)
Nielsen, Lars (1/1)
Norbach, Alexander (1/1)
Parvanyan, Ashot (0/1)
Paulweber, Lara Maria (½/1)
Pfreundt, Mathis (0/1)
Piskaykin, Bogdan (0/1)
Poelig, Juergen (1/1)
Poghosyan, Tigran (0/1)
Popist, Florian (1/1)
Renner, Kai (0/1)
Reuker, Jari (0/1)
Reyher, Susan (0/1)
Riedel, Erich (1/1)
Roehrkasten, Reinhard (0/1)
Rogozenco, Teodora Nana (0/1)
Roseneck, Jonas (1/1)
Runte, Moritz (1/1)
Savchenko, Daniel (½/1)
Sawlin, Leonid (0/1)
Schenk, Philipp (½/1)
Schlick, Stefan (½/1)
Schmidt, Alexandra (1/1)
Schramm, Anna Lena (½/1)
Schubert, Matthias (1/1)
Schulz, Carlo (1/1)
Spitzl, Vinzent (0/1)
Staufenberger, Philipp (1/1)
Steffens, Oliver (½/1)
Steiner, Maximilian (½/1)
Stelmaszyk, Nico (0/1)
Stieglitz, Dirk (0/1)
Stockter, Jasper Enno (1/1)
Svane, Frederik (0/1)
Toptschiev, David (½/1)
Verfuerth, Thomas (1/1)
Wendler, David (1/1)
Wilkening, Jonas (1/1)
Woellermann, Ludger (0/1)
Yi, Wendy (1/1)
Zanikov, Konstantin (0/1)
Zienert, Richard (0/1)
Zimmer, Luca (1/1)
Openings played as White (47)
C45 Scotch Game (1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4)
Average Elo:
1089.22
Result:
4/9 = 44.44%
B38 Sicilian, Accelerated Fianchetto, Maroczy Bind, 6.Be3 (1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3)
Average Elo:
1828.33
Result:
4/6 = 66.67%
C06 French, Tarrasch (1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 cxd4 8.cxd4)
Average Elo:
1889.17
Result:
5/6 = 83.33%
C68 Ruy Lopez, Exchange (1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6)
Average Elo:
2045.6
Result:
2/5 = 40%
C02 French, Advance (1.e4 e6 2.d4 d5 3.e5)
Average Elo:
1227.75
Result:
1½/4 = 37.5%
B02 Alekhine's Defense (1.e4 Nf6)
Average Elo:
1936
Result:
2/4 = 50%
B11 Caro-Kann, Two Knights, 3...Bg4 (1.e4 c6 2.Nc3 d5 3.Nf3 Bg4)
Average Elo:
2025.5
Result:
2/4 = 50%
B01 Scandinavian (1.e4 d5)
Average Elo:
1453
Result:
1/3 = 33.33%
B07 Pirc (1.e4 d6 2.d4 Nf6)
Average Elo:
1686.67
Result:
1½/3 = 50%
B09 Pirc, Austrian Attack (1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4)
Average Elo:
1751
Result:
2/3 = 66.67%
C07 French, Tarrasch (1.e4 e6 2.d4 d5 3.Nd2 c5)
Average Elo:
1910.33
Result:
1/3 = 33.33%
C58 Two Knights (1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5)
Average Elo:
1335
Result:
1½/2 = 75%
B72 Sicilian, Dragon (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3)
Average Elo:
1504.5
Result:
1½/2 = 75%
C41 Philidor Defense (1.e4 e5 2.Nf3 d6)
Average Elo:
1830.5
Result:
1/2 = 50%
B34 Sicilian, Accelerated Fianchetto (1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nxc6)
Average Elo:
1860
Result:
1/2 = 50%
B94 Sicilian, Najdorf (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5)
Average Elo:
1926.5
Result:
1/2 = 50%
B20 Sicilian (1.e4 c5)
Average Elo:
1993
Result:
1/2 = 50%
A06 Reti Opening (1.Nf3 d5)
Average Elo:
1773
Result:
2/2 = 100%
C55 Two Knights Defense (1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6)
Average Elo:
896
Result:
1/1 = 100%
B00 Uncommon King's Pawn Opening (1.e4)
Average Elo:
1103
Result:
1/1 = 100%
B33 Sicilian (1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4)
Average Elo:
1272
Result:
1/1 = 100%
B90 Sicilian, Najdorf (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6)
Average Elo:
1742
Result:
0/1 = 0%
B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 a6 7.Bb3 b5)
Average Elo:
1032
Result:
1/1 = 100%
C44 King's Pawn Game (1.e4 e5 2.Nf3 Nc6)
Average Elo:
1521
Result:
1/1 = 100%
C13 French (1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7)
Average Elo:
1696
Result:
0/1 = 0%
B76 Sicilian, Dragon, Yugoslav Attack (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O)
Average Elo:
1470
Result:
½/1 = 50%
B92 Sicilian, Najdorf, Opocensky Variation (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2)
Average Elo:
1414
Result:
½/1 = 50%
B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack (1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7)
Average Elo:
1845
Result:
0/1 = 0%
C42 Petrov Defense (1.e4 e5 2.Nf3 Nf6)
Average Elo:
1574
Result:
1/1 = 100%
B96 Sicilian, Najdorf (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4)
Average Elo:
1945
Result:
1/1 = 100%
C10 French (1.e4 e6 2.d4 d5 3.Nc3)
Average Elo:
1876
Result:
0/1 = 0%
A41 Queen's Pawn Game (with ...d6) (1.d4 d6)
Average Elo:
2016
Result:
½/1 = 50%
B53 Sicilian (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4)
Average Elo:
2048
Result:
0/1 = 0%
B98 Sicilian, Najdorf (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7)
Average Elo:
2163
Result:
½/1 = 50%
A31 English, Symmetrical, Benoni Formation (1.c4 c5 2.Nf3 Nf6 3.d4)
Average Elo:
2164
Result:
½/1 = 50%
C63 Ruy Lopez, Schliemann Defense (1.e4 e5 2.Nf3 Nc6 3.Bb5 f5)
Average Elo:
2236
Result:
½/1 = 50%
C69 Ruy Lopez, Exchange, Gligoric Variation, 6.d4 (1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dc 5.O-O f6 6.d4)
Average Elo:
2084
Result:
1/1 = 100%
B06 Robatsch (1.e4 g6)
Average Elo:
2066
Result:
½/1 = 50%
A36 English (1.c4 c5 2.Nc3 Nc6 3.g3)
Average Elo:
2023
Result:
1/1 = 100%
B31 Sicilian, Rossolimo Variation (1.e4 c5 2.Nf3 Nc6 3.Bb5 g6)
Average Elo:
1937
Result:
1/1 = 100%
C01 French, Exchange (1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nc3 Nf6 5.Bg5)
Average Elo:
2048
Result:
½/1 = 50%
C03 French, Tarrasch (1.e4 e6 2.d4 d5 3.Nd2)
Average Elo:
2157
Result:
½/1 = 50%
C04 French, Tarrasch, Guimard Main line (1.e4 e6 2.d4 d5 3.Nd2 Nc6 4.Ngf3 Nf6)
Average Elo:
1853
Result:
1/1 = 100%
A04 Reti Opening (1.Nf3)
Average Elo:
2119
Result:
0/1 = 0%
B36 Sicilian, Accelerated Fianchetto (1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4)
Average Elo:
2123
Result:
½/1 = 50%
A05 Reti Opening (1.Nf3 Nf6)
Average Elo:
2106
Result:
1/1 = 100%
A37 English, Symmetrical (1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3)
Average Elo:
2156
Result:
0/1 = 0%
Openings played as Black (46)
C54 Giuoco Piano (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4)
Average Elo:
1915.9
Result:
5/10 = 50%
C45 Scotch Game (1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4)
Average Elo:
2007.14
Result:
3½/7 = 50%
B13 Caro-Kann, Exchange (1.e4 c6 2.d4 d5 3.exd5 cxd5)
Average Elo:
1142.33
Result:
4½/6 = 75%
C63 Ruy Lopez, Schliemann Defense (1.e4 e5 2.Nf3 Nc6 3.Bb5 f5)
Average Elo:
2172.2
Result:
2/5 = 40%
D02 Queen's Pawn Game (1.d4 d5 2.Nf3)
Average Elo:
1673.5
Result:
2/4 = 50%
C90 Ruy Lopez, Closed (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 d6)
Average Elo:
1891.75
Result:
2/4 = 50%
B12 Caro-Kann Defense (1.e4 c6 2.d4)
Average Elo:
1247.67
Result:
1/3 = 33.33%
D00 Queen's Pawn Game (1.d4 d5)
Average Elo:
1812
Result:
1½/3 = 50%
C68 Ruy Lopez, Exchange (1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6)
Average Elo:
1952.33
Result:
1/3 = 33.33%
B14 Caro-Kann, Panov-Botvinnik Attack (1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 e6)
Average Elo:
1261.5
Result:
1/2 = 50%
B18 Caro-Kann, Classical (1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5)
Average Elo:
1275.5
Result:
1/2 = 50%
B11 Caro-Kann, Two Knights, 3...Bg4 (1.e4 c6 2.Nc3 d5 3.Nf3 Bg4)
Average Elo:
1065.5
Result:
2/2 = 100%
D15 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3)
Average Elo:
1920
Result:
2/2 = 100%
C78 Ruy Lopez (1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O)
Average Elo:
2102.5
Result:
0/2 = 0%
B03 Alekhine's Defense (1.e4 Nf6 2.e5 Nd5 3.d4)
Average Elo:
2197
Result:
0/2 = 0%
B10 Caro-Kann (1.e4 c6)
Average Elo:
1647
Result:
0/1 = 0%
B01 Scandinavian (1.e4 d5)
Average Elo:
1079
Result:
0/1 = 0%
A40 Queen's Pawn Game (1.d4)
Average Elo:
1426
Result:
½/1 = 50%
D06 Queen's Gambit Declined (1.d4 d5 2.c4)
Average Elo:
1739
Result:
0/1 = 0%
D55 Queen's Gambit Declined (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3)
Average Elo:
1475
Result:
0/1 = 0%
C27 Vienna Game (1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4)
Average Elo:
1436
Result:
0/1 = 0%
C84 Ruy Lopez, Closed (1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7)
Average Elo:
1569
Result:
½/1 = 50%
D11 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6 3.Nf3)
Average Elo:
1614
Result:
0/1 = 0%
D01 Richter-Veresov Attack (1.d4 d5 2.Nc3 Nf6 3.Bg5)
Average Elo:
1902
Result:
0/1 = 0%
A22 English (1.c4 e5 2.Nc3 Nf6)
Average Elo:
1926
Result:
1/1 = 100%
C62 Ruy Lopez, Old Steinitz Defense (1.e4 e5 2.Nf3 Nc6 3.Bb5 d6)
Average Elo:
1801
Result:
½/1 = 50%
E61 King's Indian (1.d4 Nf6 2.c4 g6 3.Nc3)
Average Elo:
1765
Result:
0/1 = 0%
A26 English (1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6)
Average Elo:
1679
Result:
1/1 = 100%
B33 Sicilian (1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4)
Average Elo:
1898
Result:
½/1 = 50%
A36 English (1.c4 c5 2.Nc3 Nc6 3.g3)
Average Elo:
1823
Result:
0/1 = 0%
C28 Vienna Game (1.e4 e5 2.Nc3 Nf6 3.Bc4 Nc6)
Average Elo:
1931
Result:
1/1 = 100%
C50 Giuoco Piano (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5)
Average Elo:
1521
Result:
1/1 = 100%
A44 Old Benoni Defense (1.d4 c5 2.d5 e5)
Average Elo:
1772
Result:
½/1 = 50%
A07 King's Indian Attack (1.Nf3 d5 2.g3)
Average Elo:
1894
Result:
1/1 = 100%
D18 Queen's Gambit Declined Slav, Dutch (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3)
Average Elo:
1915
Result:
0/1 = 0%
D19 Queen's Gambit Declined Slav, Dutch (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O O-O 9.Qe2)
Average Elo:
2108
Result:
0/1 = 0%
A00 Uncommon Opening (1.g4, a3, h3, etc.)
Average Elo:
2098
Result:
1/1 = 100%
D10 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6)
Average Elo:
1936
Result:
1/1 = 100%
A21 English (1.c4 e5 2.Nc3)
Average Elo:
2079
Result:
1/1 = 100%
A11 English, Caro-Kann Defensive System (1.c4 c6)
Average Elo:
2052
Result:
0/1 = 0%
C41 Philidor Defense (1.e4 e5 2.Nf3 d6)
Average Elo:
1931
Result:
½/1 = 50%
B15 Caro-Kann (1.e4 c6 2.d4 d5 3.Nc3)
Average Elo:
2017
Result:
0/1 = 0%
C56 Two Knights (1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Nxe4)
Average Elo:
2014
Result:
0/1 = 0%
A25 English (1.c4 e5 2.Nc3 Nc6)
Average Elo:
1863
Result:
1/1 = 100%
B00 Uncommon King's Pawn Opening (1.e4)
Average Elo:
2005
Result:
1/1 = 100%
E85 King's Indian, Samisch, Orthodox Variation (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5)
Average Elo:
2348
Result:
0/1 = 0%