What are the most common mistakes at 400–800?

Leaving pieces undefended Ignoring the opponent’s threats Early queen raids Not castling Missing mate in one

How to improve at chess at 400–800

Novice · Class H–G (below 800)

How do I improve at chess from 400 to 800?

Knows the rules and basic mates but still drops pieces and misses one-move threats. Spend most of your training on tactics (30%), checkmates (20%), thinking process (15%). 3–5 games a week at 15+10 or slower. Online is fine; avoid bullet and blitz.

Where to spend your training time

Tactics		30%
Checkmates		20%
Thinking process		15%
Openings		10%
Endgames		15%
Game analysis		10%

A training session

10 min: 10 easy puzzles (mates in 1, hanging pieces)
15 min: Theme of the day with examples
15 min: Guided practice: themed puzzles
15 min: Training game with “safety check” before each move
5 min: Homework: 10 puzzles a day + 3 games

How much to play

3–5 games a week at 15+10 or slower. Online is fine; avoid bullet and blitz.

How to review your games

Find every move where material was lost and name why: undefended piece, missed check, or missed threat.

Most common mistakes at 400–800

Leaving pieces undefended
Ignoring the opponent’s threats
Early queen raids
Not castling
Missing mate in one

Coach’s tips

Introduce the “Is it safe?” check before every move
Use the student’s own lost pieces as puzzles
Teach K+Q and K+R mates until they are automatic

Openings to play

With White: 1.e4 with the Italian Game (quiet set-up). With Black: 1...e5 vs 1.e4, 1...d5 vs 1.d4. Learn ideas: fast development, castle, centre. Know the Scholar’s mate defence.

Ready for the next level?

Move on when you hold about 800 over the board, solve 70% of puzzles at this level, average no more than 3 blunders a game and have done 80% of the lessons.

Puzzles for your level

Chess puzzles for 400–800 players