Blackmar-Diemer Gambit

Euwe Defense: 5...e6

Black plays solidly with 5...e6. White pins the knight with Bg5, targets h7 with Bd3, and launches the deadly Qe1-h4 queen maneuver against the enemy king.

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 e6 6.Bg5 Be7 7.Bd3 O-O 8.O-O c5 9.Qe1

Move by move

1. 1.d4 – White opens with 1.d4: firmly staking a claim in the center, governing key squares c5 and e5, and opening paths for the light-squared bishop.
2. 1...d5 – Symmetrical central answer 1...d5: Black anchors a pawn firmly in the center to dispute territory and avoid early space concessions.
3. 2.e4 – The Blackmar-Diemer Gambit begins with 2.e4: a bold strike aimed at deflecting Black's d5-pawn and opening vicious attacking lines.
4. 2...dxe4 – Accepting the gambit 2...dxe4: Black pockets the central pawn, ready to defend the material gain with careful and precise play.
5. 3.Nc3 – Aggressive development 3.Nc3: the knight immediately attacks the advanced e4-pawn, stepping up pressure on Black's central outpost.
6. 3...Nf6 – Natural defense 3...Nf6: Black mobilizes the knight toward the center, solidly defending the extra pawn on the contested e4-square.
7. 4.f3 – The conceptual heart of the gambit 4.f3! White offers a second pawn to blow open the f-file and accelerate piece mobilization.
8. 4...exf3 – Forced capture 4...exf3: Black accepts the second pawn sacrifice, but gifts White a powerful and completely open f-file for the rook.
9. 5.Nxf3 – Active recapture 5.Nxf3: the knight leaps into action with dynamic energy; White is down a pawn but possesses massive development.
10. 5...e6 – The Euwe Defense 5...e6: Black foregoes developing the c8-bishop outside the pawn chain to construct a rock-solid central bastion.
11. 6.Bg5 – Active pin 6.Bg5: the bishop paralyzes the f6-knight, stripping Black's king of its chief protector and setting up an assault.
12. 6...Be7 – Unpinning development 6...Be7: Black neutralizes the pin naturally with the bishop, preparing immediate kingside castling for safety.
13. 7.Bd3 – Aggressive alignment 7.Bd3: the bishop lines up along the b1-h7 diagonal with the clear intent of hammering Black's castled king.
14. 7...O-O – Black castles 7...O-O: the king seeks shelter on the flank, but steps right into the crosshairs of White's primed artillery.
15. 8.O-O – Securing the king 8.O-O: White castles smoothly, connecting the f1-rook to the coordinated attacking operations along the f-file.
16. 8...c5 – Central counterstrike 8...c5: Black attempts to strike back against d4, hoping to divert White's attacking pieces from the kingside.
17. 9.Qe1 – Thematic maneuver 9.Qe1! The queen prepares to swing to h4; the Bg5, Bd3, and Qh4 battery is poised to overwhelm Black's defenses.

How to exploit the position

White mobilizes all forces toward the kingside preparing a direct mating assault

• Pin the f6-knight with Bg5 to neutralize the king's chief defensive piece
• Station the bishop on d3 pointing directly at the critical h7-weakness
• Swing the queen via Qe1 to h4 forming a lethal kingside attacking battery
• Eliminate the f6-knight with Bxf6 at the right moment to deliver Qxh7# checkmate

Master tips

The thematic Qe1-h4 maneuver

With the bishop on g5 and the queen on h4 White exerts overwhelming pressure on f6 and h7