♟ ChessInsights
Tournaments/European Individual Chess Championship 2026 | Boards 1-66/Openings

Openings — position clusters

Unlike a move-tree view, this groups games by the position actually reached at move 4 — different move orders that transpose to the same position land in the same cluster.

Cluster at move
3456810
Showing 50 of 343 clusters (capped at 50)·724 / 726 games reached move 4
Position at move 4
41games

Reached via

  • ×411.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6

Games

Position at move 4
36games

Reached via

  • ×361.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6

Games

Position at move 4
17games2 move orders

Reached via

  • ×151.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6
  • ×21.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e6

Games

Position at move 4
14games7 move orders

Reached via

  • ×41.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c6
  • ×41.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 c6
  • ×21.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Nc3 c6
  • + 4 other orders

Games

Position at move 4
13games

Reached via

  • ×131.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O

Games

Position at move 4
13games

Reached via

  • ×131.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6

Games

Position at move 4
11games4 move orders

Reached via

  • ×41.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5
  • ×31.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5
  • ×31.c4 e6 2.Nc3 d5 3.d4 Nf6 4.cxd5 exd5
  • + 1 other order

Games

Position at move 4
11games

Reached via

  • ×111.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Be7

Games

Position at move 4
10games

Reached via

  • ×101.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6

Games

Position at move 4
10games

Reached via

  • ×101.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6

Games

Position at move 4
10games

Reached via

  • ×101.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3 e6

Games

Position at move 4
9games

Reached via

  • ×91.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6

Games

Position at move 4
9games4 move orders

Reached via

  • ×41.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Be7
  • ×21.d4 Nf6 2.Nf3 d5 3.c4 e6 4.Nc3 Be7
  • ×21.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7
  • + 1 other order

Games

Position at move 4
9games3 move orders

Reached via

  • ×71.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4
  • ×11.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 d5
  • ×11.d4 Nf6 2.Nf3 d5 3.c4 e6 4.Nc3 Bb4

Games

Position at move 4
8games

Reached via

  • ×81.e4 c6 2.d4 d5 3.e5 Bf5 4.h4 h5

Games

Position at move 4
8games6 move orders

Reached via

  • ×31.Nf3 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7
  • ×11.Nf3 d5 2.c4 e6 3.g3 Nf6 4.Bg2 Be7
  • ×11.c4 Nf6 2.Nf3 e6 3.g3 d5 4.Bg2 Be7
  • + 3 other orders

Games

Position at move 4
7games2 move orders

Reached via

  • ×61.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O Be7
  • ×11.Nf3 Nf6 2.g3 d5 3.Bg2 e6 4.O-O Be7

Games

Position at move 4
6games2 move orders

Reached via

  • ×41.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Bb4+
  • ×21.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 Bb4+

Games

Position at move 4
6games

Reached via

  • ×61.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7

Games

Position at move 4
6games

Reached via

  • ×61.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4

Games

Position at move 4
6games4 move orders

Reached via

  • ×21.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 h6
  • ×21.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 h6
  • ×11.d4 d5 2.c4 e6 3.Nc3 h6 4.Nf3 Nf6
  • + 1 other order

Games

Position at move 4
6games5 move orders

Reached via

  • ×21.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Be7
  • ×11.d4 e6 2.c4 d5 3.Nf3 Nf6 4.g3 Be7
  • ×11.Nf3 d5 2.d4 Nf6 3.c4 e6 4.g3 Be7
  • + 2 other orders

Games

Position at move 4
5games2 move orders

Reached via

  • ×31.d4 d5 2.c4 e6 3.Nc3 Be7 4.cxd5 exd5
  • ×21.c4 e6 2.Nc3 d5 3.d4 Be7 4.cxd5 exd5

Games

Position at move 4
5games3 move orders

Reached via

  • ×21.e4 d6 2.d4 Nf6 3.Nc3 e5 4.Nf3 Nbd7
  • ×21.d4 d6 2.e4 Nf6 3.Nc3 e5 4.Nf3 Nbd7
  • ×11.e4 e5 2.Nf3 Nf6 3.Nc3 d6 4.d4 Nbd7

Games

Position at move 4
5games2 move orders

Reached via

  • ×41.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Nbd7
  • ×11.d4 Nf6 2.Nf3 d5 3.c4 e6 4.Nc3 Nbd7

Games

Position at move 4
5games

Reached via

  • ×51.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6

Games

Position at move 4
5games2 move orders

Reached via

  • ×41.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6
  • ×11.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nf6

Games

Position at move 4
5games

Reached via

  • ×51.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5

Games

Position at move 4
5games

Reached via

  • ×51.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7

Games

Position at move 4
5games

Reached via

  • ×51.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6

Games

Position at move 4
5games2 move orders

Reached via

  • ×41.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 dxc4
  • ×11.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.d4 dxc4

Games

Position at move 4
5games2 move orders

Reached via

  • ×41.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5
  • ×11.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6

Games

Position at move 4
4games

Reached via

  • ×41.e4 c6 2.d4 d5 3.e5 c5 4.Nf3 cxd4

Games

Position at move 4
4games4 move orders

Reached via

  • ×11.c4 e6 2.g3 d5 3.Bg2 Nf6 4.Nf3 d4
  • ×11.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 d4
  • ×11.c4 e6 2.g3 Nf6 3.Bg2 d5 4.Nf3 d4
  • + 1 other order

Games

Position at move 4
4games

Reached via

  • ×41.e4 c5 2.Nf3 Nc6 3.Bb5 d6 4.O-O Bd7

Games

Position at move 4
4games2 move orders

Reached via

  • ×31.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6
  • ×11.d4 d5 2.c4 dxc4 3.Nf3 e6 4.e3 Nf6

Games

Position at move 4
4games3 move orders

Reached via

  • ×21.c4 e6 2.Nf3 d5 3.g3 d4 4.Bg2 Nc6
  • ×11.c4 e6 2.g3 d5 3.Bg2 Nc6 4.Nf3 d4
  • ×11.c4 e6 2.g3 d5 3.Bg2 d4 4.Nf3 Nc6

Games

Position at move 4
3games

Reached via

  • ×31.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.Bxc6 dxc6

Games

Position at move 4
3games3 move orders

Reached via

  • ×11.d4 Nf6 2.Nf3 d5 3.Bf4 c5 4.e3 e6
  • ×11.d4 Nf6 2.Nf3 d5 3.Bf4 e6 4.e3 c5
  • ×11.d4 Nf6 2.Nf3 e6 3.Bf4 d5 4.e3 c5

Games

Position at move 4
3games2 move orders

Reached via

  • ×21.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7
  • ×11.d4 Nf6 2.Nf3 e6 3.c4 b6 4.g3 Bb7

Games

Position at move 4
3games2 move orders

Reached via

  • ×21.e4 c5 2.Nf3 Nc6 3.Nc3 e6 4.d4 cxd4
  • ×11.e4 c5 2.Nc3 e6 3.Nf3 Nc6 4.d4 cxd4

Games

Position at move 4
3games3 move orders

Reached via

  • ×11.d4 d6 2.Nf3 Nf6 3.c4 g6 4.Nc3 Bg7
  • ×11.Nf3 d6 2.d4 Nf6 3.c4 g6 4.Nc3 Bg7
  • ×11.d4 Nf6 2.c4 d6 3.Nf3 g6 4.Nc3 Bg7

Games

Position at move 4
3games

Reached via

  • ×31.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O

Games

Position at move 4
3games

Reached via

  • ×31.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 h6

Games

Position at move 4
3games3 move orders

Reached via

  • ×11.Nf3 Nf6 2.g3 d5 3.Bg2 c5 4.O-O e6
  • ×11.Nf3 d5 2.g3 Nf6 3.Bg2 c5 4.O-O e6
  • ×11.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O c5

Games

Position at move 4
3games2 move orders

Reached via

  • ×21.e4 c5 2.Nf3 d6 3.d4 Nf6 4.Nc3 cxd4
  • ×11.e4 c5 2.Nf3 d6 3.Nc3 Nf6 4.d4 cxd4

Games

Position at move 4
3games3 move orders

Reached via

  • ×11.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 dxc4
  • ×11.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 dxc4
  • ×11.d4 d5 2.c4 e6 3.Nf3 Nf6 4.g3 dxc4

Games

Position at move 4
3games

Reached via

  • ×31.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.Bxc6 bxc6

Games

Position at move 4
3games

Reached via

  • ×31.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5

Games

Position at move 4
3games2 move orders

Reached via

  • ×21.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 Be7
  • ×11.c4 e6 2.Nc3 d5 3.d4 Nf6 4.Bg5 Be7

Games