King safety
Mixed training: random positions across every type — just like a real game, you won’t know what’s coming.
Defend your king
Recognise the attack coming at you and play the move that holds: shield, critical defenders, counterplay.
The three pawns in front of your castled king are its armor, and every push is irreversible. The cost rises in order: h3 (or …h6) buys air, g3 (or …g6) digs holes and hands the enemy pawns a hook, f3 (or …f6) opens the king’s diagonal — almost always the most expensive.
Some pieces are worth more than their face value because they hold your castled position together: the f6-knight, the fianchettoed bishop, the f7-pawn. Trading them, or letting them get chased away, weakens your king without a single shield pawn moving.
Defense starts with knowing the standard mates against a castled king: back rank, queen-and-bishop battery on h7, smothered mate. Recognizing the pattern one move before it exists makes all the difference between parrying and suffering.
A mating threat is settled by arithmetic on the focal point — h7, g7 or f7: count the attackers aiming at it and the real defenders. As long as the defenders hold the count, the sacrifice does not work.
After Bxh7+ Kxh7 Ng5+, your king has three addresses: Kg8, Kg6 or Kh6 — and you can also decline the bishop. If even one of these defenses holds, the sacrifice was incorrect: accept it and play the right escape.
Against a fianchettoed king, the standard assault is h4-h5: the g6-pawn serves as the hook to open the h-file. The defense is played before the file opens — block with …h5 at the right moment, hold the h5-square, keep the g7-bishop.
Before every defensive move, ask the question: "if I do nothing, what does he play?". The best defensive move answers that move before it exists — that is the whole of prophylaxis.
Every exchange removes an attacker or a defender: the defender trades the attackers, above all the queen; the attacker trades the defenders. A three-piece attack dies when only two pieces remain.
A wing attack is refuted in the center: as long as the center can be opened, the assault has no foundation. With opposite-side castling every tempo counts double — run your own race, not theirs.
A mating attack is only sound when four preconditions come together: a stable center for the attacker, local superiority on the king’s wing, a weakened or weakenable castled position, and lines that can be opened. With zero or one, it is a bluff — defend with normal moves.
Material won under attack is a loan, not loot: giving it back at the right moment buys tempi and extinguishes the initiative. A quiet equality beats an extra piece under mating threats.
A lost position is not a lost game: perpetual check, stalemate and the fortress turn defeats into half-points. When in distress, look for the mechanical draw first, not for material.
1,500 positions where your castled king is under pressure: find the move that holds — shield, critical defender, prophylactic parry. Every solution is engine-proven; the bank blends positions from real player games (anonymised) with Lichess defensive puzzles, served at your level from 800 to 2400+.
Attack the enemy king
The same patterns, read from the other side of the board: gather the conditions, then strike. When a diagram is shared with a defense lesson, that is deliberate — one pattern reads both ways.
The attacker picks the focal point — h7, g7, f7, or the pawn pushed in front of the king — and brings more attackers to it than there are real defenders. The defender’s arithmetic, read in the mirror: when the count is in surplus, the sacrifice works.
The Greek gift is played when the preconditions are met: a knight ready for g5, a queen that can follow, an e5-pawn holding f6, an openable h-file. The defender’s checklist, read in the mirror — if every escape loses, go; if a single one holds, keep preparing.
An attack has three phases: prepare (bring the pieces over, steady the center), assault (levers and sacrifices), exploit (mate or conversion into material). Every phase error has a price — a premature assault is a bluff, endless preparation lets the defender regroup, refusing to convert throws away a successful attack.
Against a fianchettoed king the standard assault is h4-h5 against the g6-hook, doubled with trading off the g7-bishop — without its dark-squared guardian the castled position collapses. The offensive reading of the fianchetto defense lesson: same squares, other side.
Against the queenside castle the levers are a4-a5 and b4-b5, the focal points b7 and c7 — and the king has one extra address: the escape through d7. A sound attack opens a useful file AND closes that door.
The checklist made playable: one position, one sacrifice on the table — you decide. Every verdict in this deck is engine-proven at two depths (correct = confirmed margin AND every defense refuted; incorrect = confirmed refutation); after your answer, the best defense plays out in front of you.
Exercises built from YOUR games (solved, missed) are part of ChessPivot Plus. Discover ChessPivot Plus
The idea
Defending your king is not about suffering: it is counting, questioning, and trading at the right moment. These twelve lessons cover the defense of the castled king, from the pawn shield to the saving resources — every position is built from a real move sequence and engine-checked at two depths, every verdict proven. Start at your own level and climb: the lessons build on each other, from the h-g-f hierarchy to the four preconditions of a sound attack.