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Player Profile

Player:

(Eg: Carlsen,Magnus)

Koelmans, Jan Willem



FIDE:	FIDE Card
Years:	1995-2023
Number of games:	85
Number of wins:	25
Number of draws:	34
Number of losses:	26
White score:	25½/43 (59.3% - Average Elo: 1998.05)
Black score:	16½/42 (39.29% - Average Elo: 2040.24)

Rating progression

Games
White wins
White draws
White losses
Black wins
Black draws
Black losses

Top wins

Koelmans, Jan Willem (1972) - Manitz, Tilo (2261), Dresden ZMD op, Dresden () - 2003

Koelmans, Jan Willem (2008) - Lauferon, Patrick (2249), Val Thorens op, Val Thorens (D18) - 2009

Koelmans, Jan Willem (2008) - Kiss, Kinga (2146), Val Thorens op, Val Thorens (E50) - 2009

Alexopoulos, Spiros Orestis (1953) - Koelmans, Jan Willem (1905), Maastricht Limburg op-B 9th, Maastricht (A12) - 2015

Beukema, Jasper (1933) - Koelmans, Jan Willem (1905), Maastricht Limburg op-B 9th, Maastricht (B23) - 2015

Geboers, Jimmy (1923) - Koelmans, Jan Willem (2020), Maastricht Limburg op-B 7th, Maastricht (D10) - 2013

Koelmans, Jan Willem - ? (42)

Coenen, Bert (1/2)

Admiraal, Miguoel (0/1)

Bergmans, Dirk (½/1)

Braam, Marco (1/1)

Brixius, Dirk (0/1)

Cardilli, Mariano (1/1)

Guillon, Gabriel (1/1)

Kiss, Kinga (1/1)

Kuck, Ulrich (½/1)

La Manna, Andrea (1/1)

Lauferon, Patrick (1/1)

Lobzhanidze, Davit (0/1)

Nicholson, John G (0/1)

Oberndoerfer, Frank (0/1)

Passchyn, Maarten (½/1)

Ramaekers, Philippe1 (1/1)

Riemens, Albert (½/1)

Salomons, Quinten (1/1)

Schrott, Ernst (½/1)

Senders, Mischa (1/1)

Smits, Sebastiaan (½/1)

Solaroli, Riccardo (½/1)

Tutenel, Erik (½/1)

Van de Griend, Johan (1/1)

Van de Oudeweetering, Arthur (0/1)

Van den Bersselaar, Jeroen (½/1)

Van Deutekom, Yde (½/1)

Willockx, Ritsaart (½/1)

? - Koelmans, Jan Willem (40)

Geboers, Jimmy (1½/3)

Aben, Paul (½/1)

Alexopoulos, Spiros Orestis (1/1)

Bakker, Jan (½/1)

Beukema, Jasper (1/1)

Bex, Lennert (0/1)

Bruls, Peter (1/1)

Cedikova, Katerina (0/1)

Coiffait, Casimir (0/1)

Dauner, Benedikt (0/1)

Dgebuadze, Alexandre (0/1)

Dickhoff, Ronald (0/1)

Drazic, Sinisa (0/1)

Freer, Robert (½/1)

Giaracuni, Claudio (1/1)

Holwijn, Melvin (0/1)

Isonzo, Davide (0/1)

Kastelein, Gerard (1/1)

Keetman, Maaike (1/1)

Klein, Gernot (0/1)

Kotlyar, Dimitri (0/1)

Leontiev, Oleg1 (0/1)

Lobzhanidze, Davit (0/1)

Nanu, Ciprian Costica (0/1)

Navrotescu, Catalin (0/1)

Ouwersloot, Hans (0/1)

Peter, Laurenz (1/1)

Picone, Franco (1/1)

Schaefer, Michael (0/1)

Stange, Sven (½/1)

Tutenel, Erik (½/1)

Valenti, Richard (½/1)

Valette, Christian (½/1)

Van Brussel, Bert (½/1)

Van der Linde, Maurits (½/1)

Van der Scheur, Dirk (½/1)

Van Houtte, Randy (½/1)

Van 't Hoff, Kees (½/1)

Van Zwet, Matthias (½/1)

Vroombout, Enrico (½/1)

Openings played as White (37)

D43 Queen's Gambit Declined Semi-Slav (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6)
Average Elo: 1835
Result: 1½/2 = 75%

D31 Queen's Gambit Declined (1.d4 d5 2.c4 e6 3.Nc3)
Average Elo: 2082.5
Result: 1/2 = 50%

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: 2174.5
Result: 2/2 = 100%

A87 Dutch, Leningrad, Main Variation (1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3)
Average Elo: 2145
Result: 1½/2 = 75%

A65 Benoni, 6.e4 (1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4)
Average Elo: 2050
Result: 1/2 = 50%

A57 Benko Gambit (1.d4 Nf6 2.c4 c5 3.d5 b5)
Average Elo: 1924.5
Result: 1½/2 = 75%

A70 Benoni, Classical with 7.Nf3 (1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3)
Average Elo: 2173
Result: 0/1 = 0%

D15 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3)
Average Elo: 1944
Result: 0/1 = 0%

E12 Queen's Indian (1.d4 Nf6 2.c4 e6 3.Nf3 b6)
Average Elo: 1856
Result: ½/1 = 50%

A55 Old Indian, Main line (1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 Nbd7 5.e4)
Average Elo: 1848
Result: ½/1 = 50%

A86 Dutch (1.d4 f5 2.c4 Nf6 3.g3)
Average Elo: 1787
Result: ½/1 = 50%

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: 1763
Result: 1/1 = 100%

A21 English (1.c4 e5 2.Nc3)
Average Elo: 2205
Result: ½/1 = 50%

D87 Grunfeld, Exchange (1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5)
Average Elo: 2400
Result: 0/1 = 0%

D36 Queen's Gambit Declined, Exchange, Positional line, 6.Qc2 (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.Qc2)
Average Elo: 1679
Result: 1/1 = 100%

E50 Nimzo-Indian, 4.e3 O-O 5.Nf3, without ...d5 (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3)
Average Elo: 2146
Result: 1/1 = 100%

Uncommon Opening (1.g4, a3, h3, etc.)
Average Elo: 2261
Result: 1/1 = 100%

E30 Nimzo-Indian, Leningrad (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5)
Average Elo: 1752
Result: 1/1 = 100%

D13 Queen's Gambit Declined Slav, Exchange Variation (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5)
Average Elo: 1901
Result: ½/1 = 50%

E99 King's Indian, Orthodox, Taimanov (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Ne1 Nd7 10.f3 f5)
Average Elo: 2170
Result: 0/1 = 0%

A40 Queen's Pawn Game (1.d4)
Average Elo: 2140
Result: 0/1 = 0%

E45 Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2 Ba6)
Average Elo: 1936
Result: ½/1 = 50%

A80 Dutch (1.d4 f5)
Average Elo: 1893
Result: 1/1 = 100%

A42 Modern Defense, Averbakh System (1.d4 d6 2.c4 g6 3.Nc3 Bg7 4.e4)
Average Elo: 2156
Result: ½/1 = 50%

E43 Nimzo-Indian, Fischer Variation (1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6)
Average Elo: 1556
Result: 1/1 = 100%

E70 King's Indian (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4)
Average Elo: 2165
Result: ½/1 = 50%

A50 Queen's Pawn Game (1.d4 Nf6 2.c4)
Average Elo: 0
Result: ½/1 = 50%

D20 Queen's Gambit Accepted (1.d4 d5 2.c4 dxc4)
Average Elo: 1863
Result: ½/1 = 50%

D11 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6 3.Nf3)
Average Elo: 1797
Result: 1/1 = 100%

D44 Queen's Gambit Declined Semi-Slav (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4)
Average Elo: 2330
Result: 0/1 = 0%

D29 Queen's Gambit Accepted, Classical (1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7)
Average Elo: 2175
Result: ½/1 = 50%

A52 Budapest Gambit (1.d4 Nf6 2.c4 e5 3.dxe5 Ng4)
Average Elo: 1858
Result: ½/1 = 50%

D85 Grunfeld (1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5)
Average Elo: 0
Result: 1/1 = 100%

A59 Benko Gambit (1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.e4)
Average Elo: 2177
Result: 0/1 = 0%

A43 Old Benoni (1.d4 c5)
Average Elo: 1795
Result: 1/1 = 100%

E94 King's Indian, Orthodox (1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O)
Average Elo: 1847
Result: ½/1 = 50%

D10 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6)
Average Elo: 1908
Result: ½/1 = 50%

Openings played as Black (33)

D04 Queen's Pawn Game (1.d4 d5 2.Nf3 Nf6 3.e3)
Average Elo: 2018
Result: ½/2 = 25%

B85 Sicilian, Scheveningen, Classical (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Qc7 8.f4 Nc6)
Average Elo: 2349
Result: 0/2 = 0%

B80 Sicilian, Scheveningen (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6)
Average Elo: 2083.5
Result: ½/2 = 25%

D15 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3)
Average Elo: 2342
Result: 0/2 = 0%

D02 Queen's Pawn Game (1.d4 d5 2.Nf3)
Average Elo: 2120.5
Result: 1/2 = 50%

D35 Queen's Gambit Declined (1.d4 d5 2.c4 e6 3.Nc3 Nf6)
Average Elo: 2077.5
Result: ½/2 = 25%

B23 Sicilian, Closed (1.e4 c5 2.Nc3)
Average Elo: 1795
Result: 2/2 = 100%

D47 Queen's Gambit Declined Semi-Slav (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4)
Average Elo: 1876
Result: 1½/2 = 75%

B21 Sicilian, 2.f4 and 2.d4 (1.e4 c5 2.f4)
Average Elo: 1840
Result: ½/2 = 25%

A01 Nimzovich-Larsen Attack (1.b3)
Average Elo: 2474
Result: 0/1 = 0%

D17 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5)
Average Elo: 2230
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: 2168
Result: 0/1 = 0%

A04 Reti Opening (1.Nf3)
Average Elo: 2152
Result: ½/1 = 50%

D01 Richter-Veresov Attack (1.d4 d5 2.Nc3 Nf6 3.Bg5)
Average Elo: 1759
Result: 1/1 = 100%

B50 Sicilian (1.e4 c5 2.Nf3 d6)
Average Elo: 2535
Result: 0/1 = 0%

B90 Sicilian, Najdorf (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6)
Average Elo: 2141
Result: ½/1 = 50%

A31 English, Symmetrical, Benoni Formation (1.c4 c5 2.Nf3 Nf6 3.d4)
Average Elo: 2171
Result: ½/1 = 50%

A25 English (1.c4 e5 2.Nc3 Nc6)
Average Elo: 1949
Result: ½/1 = 50%

D11 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6 3.Nf3)
Average Elo: 1880
Result: 1/1 = 100%

A20 English (1.c4 e5)
Average Elo: 1739
Result: 0/1 = 0%

D46 Queen's Gambit Declined Semi-Slav (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3)
Average Elo: 1951
Result: ½/1 = 50%

B48 Sicilian, Taimanov Variation (1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3)
Average Elo: 1888
Result: 0/1 = 0%

D10 Queen's Gambit Declined Slav (1.d4 d5 2.c4 c6)
Average Elo: 1923
Result: 1/1 = 100%

D14 Queen's Gambit Declined Slav, Exchange Variation (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5)
Average Elo: 1806
Result: ½/1 = 50%

B22 Sicilian, Alapin (1.e4 c5 2.c3)
Average Elo: 1863
Result: ½/1 = 50%

B86 Sicilian, Fischer-Sozin Attack (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4)
Average Elo: 1983
Result: 0/1 = 0%

A11 English, Caro-Kann Defensive System (1.c4 c6)
Average Elo: 1956
Result: ½/1 = 50%

A12 English with b3 (1.c4 c6 2.Nf3 d5 3.b3)
Average Elo: 1953
Result: 1/1 = 100%

D52 Queen's Gambit Declined (1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3)
Average Elo: 1811
Result: ½/1 = 50%

B24 Sicilian, Closed (1.e4 c5 2.Nc3 Nc6 3.g3)
Average Elo: 2237
Result: ½/1 = 50%

A00 Uncommon Opening (1.g4, a3, h3, etc.)
Average Elo: 1742
Result: 1/1 = 100%

A91 Dutch Defense (1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7)
Average Elo: 1852
Result: 0/1 = 0%

B06 Robatsch (1.e4 g6)
Average Elo: 2524
Result: 0/1 = 0%