Ruy Lopez Anderssen Variation: Adviser, Diagrams and Replay Lab

The Ruy Lopez Anderssen Variation is the line 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3. White defends e4 early and avoids the Open Defence. Use the Anderssen Variation starting position diagram to anchor the move order.

The move order is 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3. It is a White fifth-move alternative to 5.O-O. Use the starting position diagram.

White plays 5.d3 to defend e4, keep the centre flexible, and avoid 5.O-O Nxe4 Open Defence lines. It also prepares c3, Nbd2, and castling. Use the Anderssen Variation starting position diagram.

Not exactly. The Martinez Variation normally comes after 5.O-O Be7 6.d3, when Black has committed the bishop to e7. Anderssen uses 5.d3 immediately, allowing Black more active replies. Use the starting position and 5...b5 6.Bb3 Bc5 diagram together.

5.d3 is popular because it avoids heavy Open Defence theory while keeping a playable Spanish structure. It gives White a quieter but still flexible game. Use the Anderssen Variation Adviser with side set to White.

Yes. Since White has not castled, Black cannot enter the usual Open Defence with 5.O-O Nxe4. This is one of the main practical reasons for the move. Use the starting position diagram.

5.O-O is the main move and usually more ambitious theoretically, but 5.d3 is practical and avoids specific Open Defence preparation. The drawback is that Black can use active replies like 5...Bc5. Use the Anderssen Variation Adviser with branch set to move-order choice.

Black has several good replies: 5...b5, 5...d6, and 5...Bc5. The choice depends on whether Black wants active bishop play, a Steinitz-style setup, or a direct Møller-style challenge. Use the branch map.

After 5...b5 6.Bb3, Black often plays 6...Bc5, developing actively. A quieter 6...Be7 can transpose toward Martinez-style structures after castling. Use the 5...b5 6.Bb3 Bc5 active setup diagram.

Black plays 6...Bc5 because the bishop is more active on c5 than e7 and puts immediate pressure on White's centre and kingside. Use the 5...b5 6.Bb3 Bc5 active setup diagram.

Yes. 6...Be7 is playable, but after White castles it can transpose to Martinez-style Ruy Lopez positions. Black often chooses ...Bc5 to avoid giving White that calmer version. Use the branch map.

With 5...d6, Black builds a Steinitz-style structure and may later play ...b5 and ...Na5 to trade White's bishop. White can meet this with c3 or c4. Use the 5...d6 6.c3 flexible structure diagram.

The Duras-style idea is 5.d3 d6 6.c4, aiming to stop or discourage ...b5 and develop with h3, O-O, and Nc3. It is a more space-grabbing approach. Use the Duras-style 6.c4 clamp diagram.

Yes. 6.c3 is the most flexible answer, preparing d4 later and giving the bishop a retreat to c2. It can also transpose into Martinez-style structures if Black develops with ...Be7. Use the 5...d6 6.c3 flexible structure diagram.

Yes. 5...Bc5 is a direct active reply. White often continues with c3, b5, Bb3, d6, O-O, and Bg5, testing Black's kingside plan. Use the 5...Bc5 with Bg5 pressure diagram.

5...Bc5 is important because it challenges the idea that 5.d3 is simply a safe version of the Spanish. Black develops actively and asks White to prove an advantage. Use the 5...Bc5 with Bg5 pressure diagram.

After 5...Bc5 and normal development, Bg5 can pressure Black's kingside and provoke ...h6 and ...g5. White then chooses between safer retreats and sharper sacrifices. Use the 5...Bc5 with Bg5 pressure diagram.

White can sometimes consider Nxg5 in sharp lines, but it must be calculated carefully. The safer retreat Bg3 is often more practical. Use the 5...Bc5 with Bg5 pressure diagram.

Black's ...g6 setup develops the bishop to g7 quickly, often with ...O-O, ...Re8, and sometimes ...Nh5 or ...f5. White must time d4 and queenside play accurately. Use the 5...d6 and early ...g6/...Nh5 ideas diagram.

...Nh5 aims at f4, g3, and kingside counterplay. It can be useful before White gets Ng3 or d4 under ideal conditions. Use the 5...d6 and early ...g6/...Nh5 ideas diagram.

White usually develops with c3, Nbd2, O-O, Re1, and d4 at the right moment. The aim is to keep flexibility while avoiding forcing Open Defence theory. Use the Anderssen Variation Adviser with branch set to White plan.

Black should not play too passively. The most testing plans are active ...Bc5 systems, queenside expansion with ...b5, or fianchetto pressure with ...g6. Use the branch map.

White's biggest mistake is treating 5.d3 as a no-work shortcut. Black's active replies can create real pressure if White delays d4 or development too long. Use the Anderssen Variation Adviser with problem set to choosing the right plan.

Black's biggest mistake is transposing into a passive Spanish without asking White questions. Against 5.d3, Black should choose a clear setup such as ...b5, ...d6, ...Bc5, or ...g6. Use the branch map.

It is mostly positional, but tactics appear quickly when Black plays ...Bc5, ...h6, ...g5, ...Nh5, or ...f5. Use the 5...Bc5 and ...g6/...Nh5 diagrams together.

The Open Defence begins after 5.O-O Nxe4, while the Anderssen avoids that by playing 5.d3. White gets a calmer move order but gives Black other active choices. Use the starting position diagram.

The Martinez is usually more favourable for White's quiet plan because Black has often committed to ...Be7. The Anderssen lets Black choose sharper replies first. Use the starting position and Bc5 active setup diagrams.

Start with Carlsen vs Aronian because it shows the modern elite use of 5.d3 to avoid forcing theory while keeping pressure. Use the Elite rapid and blitz examples replay group.

Topalov vs Anand, Morozevich vs Shirov, Grischuk vs Adams, Ivanchuk vs Aronian, Morozevich vs Ivanchuk, Akopian vs Ivanchuk, and Ivanchuk vs Nakamura all show ...d6 and ...g6 structures. Use the 5...d6 and g6 systems replay group.

Morozevich vs Bacrot, Morozevich vs Ivanchuk, and Anand vs Aronian show ...b5 with ...Be7 or Martinez-style development. Use the 5...b5 with Be7 / Martinez-style play replay group.

Kramnik vs Aronian, Anand vs Karjakin, and Anand vs Karjakin from the Tal Memorial Blitz show active ...Bc5 systems after 5...b5. Use the 5...b5 with Bc5 active systems replay group.

Grischuk vs Karjakin shows the direct 5...Bc5 approach with Bxc6 and central pressure. Use the 5...Bc5 direct Møller-style systems replay group.

Topalov vs Anand, Morozevich vs Ivanchuk, Akopian vs Ivanchuk, Nepomniachtchi vs Kamsky, Kramnik vs Aronian, and Ivanchuk vs Nakamura show Black's practical winning chances. Use the Black practical wins replay group.

White should first study 5...b5 6.Bb3 Bc5 and 5...d6 6.c3, because these are the most important practical replies. Use the active setup and flexible structure diagrams first.

Black should decide whether the repertoire is active with ...Bc5, solid with ...d6 and ...g6, or transpositional with ...b5 and ...Be7. Use the Anderssen Variation Adviser with side set to Black.

Remember it as the early d3 Spanish: defend e4, avoid the Open Defence, then choose between c3, c4, Nbd2, O-O, and d4. Use the starting position and flexible structure diagrams together.

Study six anchors: 5.d3 start, ...b5/...Bc5, ...d6/c3, Duras c4, ...Bc5/Bg5, and ...g6/...Nh5. Use the six diagrams as your study path.

After this page, compare the Martinez Variation, Møller Defence, Modern Arkhangelsk, Russian Defence, and Open Ruy Lopez. That comparison shows why the fifth-move choice matters. Use the branch map and Replay Lab as the transition point.