The King's Indian Pawn-Storm Race
When the King's Indian center locks, both sides storm opposite wings and neither defends. How the Mar del Plata race works, and how to count who arrives first.
Every other structure in this series rewards patience. The King's Indian Mar del Plata rewards speed. Once the center locks with White's d5 against Black's e5, the board splits into two separate games with no shared border: Black hurls the kingside pawns at White's king, White tears open the queenside with c5, and neither side spends a move defending. It is the clearest proof in chess that a locked center does not end the pawn fight. It doubles it.
The skeleton
The Mar del Plata race. The d5-e4 center faces e5-d6 and cannot open. Black's f5 heads for f4 and ...g5-g4 against the white king; White's c4-c5 aims to rip open the queenside. Two attacks pointing away from each other. — 4k3/ppp4p/3p2p1/3Ppp2/2P1P3/8/PP3PPP/4K3 w - - 0 1
The structure comes from the Classical King's Indian: 8.d5 locks the center, and White then clears the f-pawn's path with 9.Ne1 (or 9.Nd2) while Black prepares ...f5.
How the tabiya arrives. 6...e5 stakes the center, 8.d5 locks it, and 10...f5 fires the first shot of the kingside storm. From here the race is set. — 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Be3 f5
The locked center is what makes the whole thing possible. When the middle is closed, a pawn storm on the wing cannot be punished by a counterblow in the center, so both players are free to attack — and both do. The only things that matter are how fast each break arrives and how much damage it does. The general logic of when a break is worth playing lives in Pawn Breaks; here it is stripped to its rawest form, a footrace.
Black storms the kingside
Black's attack is a pawn machine with a fixed order of operations: ...f5, ...f4, ...g5, ...g4, and only then the pieces. The f-pawn fixes the front on f4, the g-pawn becomes the battering ram, and ...g4 forces open a line toward the white king. Behind the pawns come the attackers along well-worn routes: a knight to g6 and then f4 or h5, the rook lifting via f7, the dark-squared bishop dropping back to f8 to join the assault on the h-file.
Two disciplines make or break the attack. First, pawn moves come before piece moves: on the storming wing, a non-forcing piece move is a tempo the race cannot spare. Second, Black accepts that the queenside is simply lost. The c7 and d6 pawns will fall; the entire bet is that mate arrives before the bill does.
White breaks the queenside
White's machine is the mirror image: c5, then the decision to take on d6 or push past it, then the pieces pour down the c-file and into the holes on c7 and b6. A knight reaching c7 or b6 forks and invades; the rooks double behind the c-pawn; the a-pawn joins with a4-a5.
White has one asset Black does not: the attacking pieces double as the king's fire brigade. A knight that has just grabbed material on the queenside can, if there is time, gallop back to defend g1. Knowing when to bank the attack and send one piece home is the hardest judgment White faces — and the most common way the defense either holds or collapses one move too late.
Here are both machines running at once, from the skeleton:
The race with no pieces, so you can watch the pawns alone. Black fixes with ...f4, rams with ...g5-g4-g3 into the white king's cover; White trades on d6 and drives the b-pawn to b5, opening the queenside. Whoever's last pawn lands with support wins. — 1... f4 2. c5 g5 3. b4 g4 4. cxd6 cxd6 5. b5 g3
Counting the race
Because neither side defends, the King's Indian middlegame reduces to one honest question: how many moves until my breakthrough, versus how many until theirs? Players who count that number win these positions; players who storm on atmosphere lose them. Add the tempo asymmetries that decide close races. A piece that both attacks and defends is worth two ordinary pieces, and finding those double-duty moves first is the concrete form of prophylaxis in a game with no time for it.
One game, the whole race
Piket–Kasparov, Tilburg 1989 is the model, because White's queenside plan actually succeeds and it still loses. Piket breaks with 14.c5, trades on d6, sends the knight on the tour Nb5-c7 and wins an entire rook on a8 by move 21. On any other part of the board that decides the game. But Kasparov never once looked at the queenside: ...f5-f4, ...g5-g4-g3, sacrifice on f2, and the knight comes to g3 and then the astonishing 28...Nh1, after which White is mated. The exchange Piket won never mattered, because it arrived a move too late.
The lesson generalizes past the King's Indian. Whenever the center locks and the attacks point at opposite wings — the French chain is the quieter cousin — stop evaluating the position by who stands better and start counting who is faster. In a race, a half-tempo is the whole game.