Prepare against Ralf-Johannes Koch
DEU · World #77,096 classical · FIDE ID 24670219
When preparing against Ralf-Johannes Koch, expect 1.e4 in 77% of White games. Against 1.e4 the reply is 1...d6 (53% of games); against 1.d4, 1...Nf6 (70%). Lowest win rate among frequent openings: Pirc Defense as Black, 22.2% over 18 games.
Our database contains 122 games by Ralf-Johannes Koch, covering Oct 2007 to Jul 2026. Below you'll find Ralf-Johannes Koch's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Ralf-Johannes Koch before a game. You can open the same data in the free interactive preparation workstation, which builds a move-by-move opening tree from every game.
Ratings
| Time control | Current | Peak | Peak date |
|---|---|---|---|
| Classical | 1,799 | 1,944 | Jul 2008 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 122 | 42 | 34 | 46 | 34.4% |
| As White | 61 | 23 | 16 | 22 | 37.7% |
| As Black | 61 | 19 | 18 | 24 | 31.1% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Ralf-Johannes Koch's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Ralf-Johannes Koch's side.
First moves as White (61 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 47 | 77.0% | 53.2% |
| d4 | 9 | 14.8% | 38.9% |
| c4 | 3 | 4.9% | 50.0% |
| Nf3 | 1 | 1.6% | 50.0% |
| b3 | 1 | 1.6% | 50.0% |
Main lines as White
- 1.e4 — 77% of White games, 53.2% score
- …c5 (49% of these games) — Koch usually continues Nc3 (41.2% score)
- …e5 (23% of these games) — Koch usually continues Nc3 (66.7% score)
- …e6 (13% of these games) — Koch usually continues d3 (0.0% score)
- 1.d4 — 15% of White games, 38.9% score
- …Nf6 (67% of these games) — Koch usually continues Nf3 (50.0% score)
- …d5 (22% of these games) — Koch usually continues Nf3 (25.0% score)
- …e6 (11% of these games) — Koch usually continues Nf3 (0.0% score)
As Black against 1.e4 (34 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d6 | 18 | 52.9% | 41.7% |
| g6 | 12 | 35.3% | 62.5% |
| e6 | 2 | 5.9% | 0.0% |
| c5 | 2 | 5.9% | 25.0% |
As Black against 1.d4 (10 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 7 | 70.0% | 64.3% |
| g6 | 2 | 20.0% | 75.0% |
| d6 | 1 | 10.0% | 50.0% |
Ralf-Johannes Koch's chess games
All 122 games by Ralf-Johannes Koch in the Chess.ceo database (Oct 2007 - Jul 2026) are free to browse, search and replay: filter by opening, opponent, event or date on the player page, or step through any game on the analysis board. Record: 42 wins, 34 draws, 46 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B23 | Sicilian: Closed | 17 | 6/2/9 | 35.3% |
| C26 | Vienna Game | 9 | 5/2/2 | 55.6% |
| D02 | London System | 5 | 1/3/1 | 20.0% |
| C00 | Sicilian | 3 | 2/0/1 | 66.7% |
| C00 | King's Indian Attack | 3 | 0/0/3 | 0.0% |
| D02 | Queen's Pawn Game | 2 | 0/1/1 | 0.0% |
| A10 | English Opening | 2 | 1/0/1 | 50.0% |
| B50 | French Defense | 2 | 1/1/0 | 50.0% |
| B04 | Alekhine Defense | 2 | 0/2/0 | 0.0% |
| A46 | Indian Defense | 2 | 1/0/1 | 50.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B07 | Pirc Defense | 18 | 4/7/7 | 22.2% |
| B06 | Modern Defense | 14 | 7/4/3 | 50.0% |
| E62 | English Opening | 8 | 1/2/5 | 12.5% |
| E61 | King's Indian Defense: Orthodox Variation | 6 | 2/2/2 | 33.3% |
| A48 | Indian Defense | 2 | 0/2/0 | 0.0% |
| E60 | King's Indian Defense | 2 | 0/0/2 | 0.0% |
| A01 | Nimzovich-Larsen attack | 1 | 1/0/0 | 100.0% |
| A45 | Queen's Pawn Game | 1 | 1/0/0 | 100.0% |
| A05 | Réti Opening | 1 | 1/0/0 | 100.0% |
| B42 | Sicilian | 1 | 0/1/0 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Oct 2018 | Hartmut Porth | 2,068 | ch-Hamburg Seniors 50+ | E61 |
| Dec 2015 | Michael Welsh | 2,023 | 1st Hamburg HSK Christmas Open | C00 |
| May 2011 | Christian Steinwachs | 1,966 | Regionalliga Mittelrhein 1011 | C17 |
| Jul 2014 | Erhard Cassens | 1,850 | Hamburg St Pauli Open B | A45 |
| Sep 2019 | Slobodan Obreht | 1,842 | 37th ch-Pinneberg | A01 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| ch-Pinneberg | 2018 | 26 | 16 | 1,673 |
| 29th Kiel Open B | 2016 | 9 | 6 | 1,741 |
| ch-Schleswig Holstein cand 64th | 2009 | 9 | 1.5 | 1,541 |
| Kiel Open B 27th | 2014 | 8 | 7 | 1,938 |
| ch-Hamburg Seniors 50+ | 2018 | 7 | 3.5 | 1,860 |
| Lueneburg Open A | 2019 | 7 | 0.5 | 1,667 |
| 1st Hamburg HSK Christmas Open | 2015 | 7 | 3.5 | 1,787 |
| 25th Kiel Open | 2012 | 6 | 1.5 | 1,724 |
Interactive opening tree from all 122 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Ralf-Johannes Koch's chess games?
122 games by Ralf-Johannes Koch, from Oct 2007 to Jul 2026, are free to browse and replay move by move — no signup needed. The preparation view groups them into an opening tree showing every line Ralf-Johannes Koch has played.
What does Ralf-Johannes Koch play on the first move as White?
Across 61 games with White in our database, Ralf-Johannes Koch opens with 1.e4 (77% of games), 1.d4 (15% of games), 1.c4 (5% of games). Against 1.e4 as Black, Ralf-Johannes Koch answers 1...d6 (53% of games), 1...g6 (35% of games), 1...e6 (6% of games). Against 1.d4: 1...Nf6 (70% of games), 1...g6 (20% of games), 1...d6 (10% of games).
What openings does Ralf-Johannes Koch play as White?
As White, Ralf-Johannes Koch's most-played openings in our database are: Sicilian: Closed (17 games, 35.3% win rate); Vienna Game (9 games, 55.6% win rate); London System (5 games, 20.0% win rate). The full breakdown of 61 games with White is in the table above.
What openings does Ralf-Johannes Koch play as Black?
As Black, Ralf-Johannes Koch most often plays: Pirc Defense (18 games, 22.2% win rate); Modern Defense (14 games, 50.0% win rate); English Opening (8 games, 12.5% win rate). See the table above for the top ten Black openings across 61 games.
What is Ralf-Johannes Koch's FIDE rating?
Ralf-Johannes Koch is currently rated 1,799 in classical chess. Peak classical rating: 1,944 (Jul 2008).
How many games has Ralf-Johannes Koch played?
Our database contains 122 games by Ralf-Johannes Koch, covering Oct 2007 to Jul 2026. Overall record: 42 wins, 34 draws, 46 losses (34.4% win rate).
How do I prepare against Ralf-Johannes Koch?
122 games by Ralf-Johannes Koch reveal their opening repertoire, most-played lines, and the variations where they score worst — the raw material for targeted preparation. The interactive opening tree lets you walk every line to any depth.