Prepare against Janne Mertanen
FM · Finland · World #4,334 classical · FIDE ID 501875
When preparing against Janne Mertanen, expect 1.d4 in 94% of White games. Against 1.e4 the reply is 1...Nf6 (52% of games); against 1.d4, 1...Nf6 (80%). Lowest win rate among frequent openings: Alekhine Defense as Black, 33.7% over 89 games.
Our database contains 740 games by Janne Mertanen, covering Apr 2003 to Jul 2026. Below you'll find Janne Mertanen's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Janne Mertanen 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 | 2,293 | 2,390 | Oct 2012 |
| Rapid | 2,177 | 2,259 | Feb 2016 |
| Blitz | 2,210 | 2,302 | Jul 2017 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 740 | 295 | 255 | 190 | 39.9% |
| As White | 386 | 184 | 131 | 71 | 47.7% |
| As Black | 354 | 111 | 124 | 119 | 31.4% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Janne Mertanen's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Janne Mertanen's side.
First moves as White (386 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 361 | 93.5% | 64.0% |
| Nf3 | 16 | 4.1% | 75.0% |
| c4 | 8 | 2.1% | 75.0% |
| e4 | 1 | 0.3% | 50.0% |
Main lines as White
- 1.d4 — 94% of White games, 64.0% score
- …Nf6 (53% of these games) — Mertanen usually continues c4 (64.2% score)
- …d5 (22% of these games) — Mertanen usually continues c4 (67.5% score)
- …e6 (9% of these games) — Mertanen usually continues c4 (68.2% score)
- 1.Nf3 — 4% of White games, 75.0% score
- …d5 (38% of these games) — Mertanen usually continues e3 (66.7% score)
- …Nf6 (31% of these games) — Mertanen usually continues c4 (60.0% score)
- …c5 (13% of these games) — Mertanen usually continues c4 (100.0% score)
As Black against 1.e4 (172 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 90 | 52.3% | 50.6% |
| c5 | 42 | 24.4% | 47.6% |
| e5 | 22 | 12.8% | 40.9% |
| Nc6 | 10 | 5.8% | 45.0% |
| c6 | 8 | 4.7% | 43.8% |
As Black against 1.d4 (102 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 82 | 80.4% | 50.6% |
| d5 | 15 | 14.7% | 36.7% |
| c5 | 4 | 3.9% | 50.0% |
| e6 | 1 | 1.0% | 50.0% |
Janne Mertanen's chess games
All 740 games by Janne Mertanen in the Chess.ceo database (Apr 2003 - 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: 295 wins, 255 draws, 190 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| E46 | Nimzo-Indian: Rubinstein System | 37 | 19/11/7 | 51.4% |
| A57 | Benoni Defense | 36 | 16/11/9 | 44.4% |
| E94 | King's Indian Defense: Orthodox Variation | 35 | 19/10/6 | 54.3% |
| A45 | Trompowsky Attack | 35 | 14/16/5 | 40.0% |
| D11 | Slav Defense | 32 | 16/11/5 | 50.0% |
| D36 | Indian Defense | 28 | 15/9/4 | 53.6% |
| D00 | Queen's Pawn Game | 21 | 12/8/1 | 57.1% |
| A80 | Dutch Defense | 17 | 11/2/4 | 64.7% |
| D85 | Grünfeld Defense | 14 | 8/4/2 | 57.1% |
| A43 | Modern Defense | 14 | 6/3/5 | 42.9% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B02 | Alekhine Defense | 89 | 30/30/29 | 33.7% |
| A57 | Benoni Defense | 48 | 19/13/16 | 39.6% |
| A37 | English Opening: Symmetrical | 27 | 11/8/8 | 40.7% |
| A46 | Indian Defense | 18 | 8/5/5 | 44.4% |
| B92 | Sicilian: Najdorf | 17 | 7/3/7 | 41.2% |
| A31 | English Opening | 12 | 1/3/8 | 8.3% |
| A04 | Réti Opening | 11 | 3/6/2 | 27.3% |
| B28 | Sicilian | 10 | 4/3/3 | 40.0% |
| D15 | Slav Defense | 10 | 2/3/5 | 20.0% |
| A64 | Catalan | 8 | 3/3/2 | 37.5% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jul 2012 | Sarunas Sulskis | 2,572 | 22nd Heart of Finland Open | A37 |
| Jan 2010 | Mikael Agopov | 2,459 | 9th Prague Open A | D85 |
| Dec 2010 | Vadim Shishkin | 2,458 | 21st Krakow Open | A65 |
| Jul 2019 | Zhansaya Abdumalik | 2,458 | 30th Pardubice Czech Open A | D00 |
| Jan 2003 | Kalle Kiik | 2,445 | Finland Open | E11 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| chT-FIN | 1995 | 29 | 14 | 2,236 |
| ch-FIN | 2010 | 27 | 14 | 2,244 |
| Jyvaskyla Open | 1995 | 12 | 7 | 2,360 |
| chT-FIN 1112 | 2012 | 11 | 9 | 2,492 |
| chT-FIN 1516 | 2016 | 11 | 8.5 | 2,389 |
| chT-FIN 2223 | 2023 | 11 | 5 | 2,165 |
| chT-FIN 1213 | 2013 | 11 | 5.5 | 2,295 |
| chT-FIN 1718 | 2018 | 10 | 7.5 | 2,338 |
Frequent opponents
Head-to-head records: Tommi Luukkonen (14 games) · Henri Koskinen (11 games) · Mika Karttunen (10 games)
Interactive opening tree from all 740 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Janne Mertanen's chess games?
740 games by Janne Mertanen, from Apr 2003 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 Janne Mertanen has played.
What does Janne Mertanen play on the first move as White?
Across 386 games with White in our database, Janne Mertanen opens with 1.d4 (94% of games), 1.Nf3 (4% of games), 1.c4 (2% of games). Against 1.e4 as Black, Janne Mertanen answers 1...Nf6 (52% of games), 1...c5 (24% of games), 1...e5 (13% of games). Against 1.d4: 1...Nf6 (80% of games), 1...d5 (15% of games), 1...c5 (4% of games).
What openings does Janne Mertanen play as White?
As White, Janne Mertanen's most-played openings in our database are: Nimzo-Indian: Rubinstein System (37 games, 51.4% win rate); Benoni Defense (36 games, 44.4% win rate); King's Indian Defense: Orthodox Variation (35 games, 54.3% win rate). The full breakdown of 386 games with White is in the table above.
What openings does Janne Mertanen play as Black?
As Black, Janne Mertanen most often plays: Alekhine Defense (89 games, 33.7% win rate); Benoni Defense (48 games, 39.6% win rate); English Opening: Symmetrical (27 games, 40.7% win rate). See the table above for the top ten Black openings across 354 games.
What is Janne Mertanen's FIDE rating?
Janne Mertanen is currently rated 2,293 in classical chess, 2,177 in rapid and 2,210 in blitz. Peak classical rating: 2,390 (Oct 2012).
How many games has Janne Mertanen played?
Our database contains 740 games by Janne Mertanen, covering Apr 2003 to Jul 2026. Overall record: 295 wins, 255 draws, 190 losses (39.9% win rate).
How do I prepare against Janne Mertanen?
740 games by Janne Mertanen 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.