Tournaments/2026 Saint Louis Masters/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

3 4 5 6 8 10

Showing 43 of 43 clusters·303 / 303 games reached move 4·138 singletons hidden — show all

17games

Reached via

×171.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6

Games

Reached via

×71.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5
×31.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5
×11.c4 e6 2.Nc3 d5 3.d4 Nf6 4.cxd5 exd5

Reached via

×51.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5
×31.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6

Reached via

×51.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6
×11.e4 e5 2.Bc4 Nc6 3.Nf3 Bc5 4.c3 Nf6

Reached via

×41.d4 d5 2.Nf3 Nf6 3.Bf4 c5 4.e3 Nc6
×11.d4 d5 2.Bf4 Nf6 3.Nf3 c5 4.e3 Nc6

Reached via

×21.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 dxc4
×11.d4 Nf6 2.Nf3 d5 3.c4 e6 4.g3 dxc4

Reached via

×21.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O c5
×11.Nf3 d5 2.g3 Nf6 3.Bg2 c5 4.O-O e6

Reached via

×21.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

Reached via

×21.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6
×11.e4 c5 2.Nf3 g6 3.d4 cxd4 4.Nxd4 Nc6

Reached via

×11.Nf3 Nf6 2.g3 c5 3.Bg2 Nc6 4.c4 g6
×11.Nf3 Nf6 2.c4 c5 3.g3 Nc6 4.Bg2 g6

Reached via

×11.Nf3 Nf6 2.d4 g6 3.g3 Bg7 4.Bg2 d5
×11.Nf3 d5 2.g3 g6 3.Bg2 Bg7 4.d4 Nf6

Reached via

×11.d4 d5 2.Nf3 e6 3.e3 Nf6 4.Bd3 c5
×11.d4 Nf6 2.Nf3 e6 3.e3 d5 4.Bd3 c5

Reached via

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