Lion Defense: Lion's Jaw is a chess opening with the ECO code B00, part of the Lion Defense family. It goes 1. e4 d6 2. d4 Nf6 3. f3. White opens with 1. e4 (the king's pawn) and Black answers 1... d6. After 5 moves it is Black to move. The lesson on the board explains every move of the line and lets you play it yourself; it is free.
The moves
1. e4 – White plays the pawn to e4
1... d6 – Black plays the pawn to d6
2. d4 – White plays the pawn to d4
2... Nf6 – Black plays the knight to f6
3. f3 – White plays the pawn to f3
About the Lion Defense
Black plays ...d6, ...Nf6, ...Nbd7 and ...e5 against 1.e4, a Philidor-like setup. It is solid and flexible but a bit passive.
Black keeps a strong e5 pawn supported by ...Nbd7 and ...c6.
Later ...Be7, ...O-O and sometimes ...b5 or ...h6 and ...g5.
White grabs space; aggressive setups with f3, Be3 and g4 test Black.
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