Main lineA00
1. h4
No pawn stands on d4, e4, d5 or e5 - this line is played with the centre squares empty.
A00
Kádas Opening
9 named lines in this family, ECO A00. Every one of them opens 1. h4, so that move's note is written once, just below, instead of once per line. Under each line you get its moves and the sentences it adds that this page has not already printed. A line's own page carries up to its first 4 per-move notes in full.
The moves every line here plays
1. h4
- 1. h4 A useful waiting move that grabs space on the h-file. Theory calls this the Kádas Opening.
Koola-Koola VariationA00
1. h4 a5
- 1... a5 A useful waiting move that grabs space on the a-file. Theory calls this the Koola-Koola Variation.
Schneider GambitA00
1. h4 g5
- 1... g5 Challenges the pawn on h4 - it can push to h5 or take on g5. The pawn is genuinely on offer - this is the Schneider Gambit: development and initiative over material.
Beginner's TrapA00
1. h4 d5 2. Rh3
In the centre, Black holds d5.
- 1... d5 Stakes a claim in the centre, controlling e4, and frees the bishop and queen.
- 2. Rh3 Develops the rook to h3. Only the knight on b1, bishop on c1, bishop on f1 and knight on g1 still stand at home. Theory calls this the Beginner's Trap.
Kádas Gambit, after 1... c5A00
1. h4 c5 2. b4
- 1... c5 Fights for d4 from the flank - contesting the centre without committing a centre pawn.
- 2. b4 Challenges the pawn on c5 - the central tension has to resolve. The pawn is genuinely on offer - this is the Kádas Gambit: development and initiative over material.
Kádas Gambit, after 1... e5A00
1. h4 e5 2. d4 exd4 3. c3
An early pawn trade leaves the d-file as White's avenue and the e-file as Black's - both sides get real winning chances down their own file. Black keeps the extra pawn; White plays for time, open lines, and initiative - the classic gambit trade.
- 1... e5 Stakes a claim in the centre, controlling d4, and frees the bishop and queen.
- 2. d4 Stakes a claim in the centre, controlling e5, and frees the bishop and queen.
- 2... exd4 Takes the pawn on d4, toward the centre.
Myers VariationA00
1. h4 d5 2. d4 c5 3. e4
The pawns on d5 and e4 stand in direct tension - the first player to resolve it chooses the structure.
- 2... c5 Challenges the pawn on d4 - the central tension has to resolve.
Steinbok GambitA00
1. h4 f5 2. e4 fxe4 3. d3
An early pawn trade leaves the e-file as White's avenue and the f-file as Black's - both sides get real winning chances down their own file.
- 1... f5 Fights for e4 from the flank - contesting the centre without committing a centre pawn.
- 2. e4 Stakes a claim in the centre, controlling d5, and frees the bishop and queen.
- 2... fxe4 Takes the pawn on e4, toward the centre.
Kádas Gambit, after 1... d5A00
1. h4 d5 2. d4 c5 3. Nf3 cxd4 4. c3
An early pawn trade leaves the c-file as Black's avenue and the d-file as White's - both sides get real winning chances down their own file.
Walk these lines on a board
An account opens every move's note in this family, the plan behind each line, and a trainer that plays the line back at you. It is free.