Blunder Knight lesson · OHRA-B · 1989

Judit Polgar vs Krunoslav Hulak: OHRA-B (1989)

Watch the famous game, then train the tactics that made it work.

White
Judit Polgar
Black
Krunoslav Hulak
Result
1-0
Focus
Tactics + development
Big lesson

The lesson is not just the tactic — it is how the position made the tactic possible.

Board + puzzle feel

Chess.com-familiar, saved for you.

We can’t import private Chess.com UI settings, so ChessCoach saves its own preferences locally and uses familiar defaults: green board, coordinates, clear move dots, instant feedback.

Replay the lesson

Move through the key positions like an analysis board.

Position 1 / 10 · Cold Open

Cold Open

Find the idea: Qd8+ works only if one defender is overloaded. What would you play?

Practical takeaway

Pause before grabbing material: king safety, development, and forcing moves decide the tactic.

Training puzzles from this game

Find the move, then prove you saw the idea.

This is the Chess.com-style flow: clear task, playable board, instant feedback, then the explanation.

Analyze my games for these motifs
Puzzle 1white to movecapture / material decision

Capture / Material Decision

Can you find it?

Find 40. Bxg6. What is the idea?

Drag the move on the board, or type the move if you already see it.

Need a hint?

The answer is a capture / material decision idea. Start by checking forcing moves.

Solution: Bxg6Bxg6 is a forcing move. It keeps initiative by using capture / material decision pressure, so the defender has to respond before solving the larger king-safety problem.

Puzzle 2white to movecheck

Check

Can you find it?

Find 39. Qd8+. What is the idea?

Drag the move on the board, or type the move if you already see it.

Need a hint?

The answer is a check idea. Start by checking forcing moves.

Solution: Qd8+Qd8+ is a forcing move. It keeps initiative by using check pressure, so the defender has to respond before solving the larger king-safety problem.

Puzzle 3white to movecheck

Check

Can you find it?

Find 38. Qb6+. What is the idea?

Drag the move on the board, or type the move if you already see it.

Need a hint?

The answer is a check idea. Start by checking forcing moves.

Solution: Qb6+Qb6+ is a forcing move. It keeps initiative by using check pressure, so the defender has to respond before solving the larger king-safety problem.

Puzzle 4white to movecheck

Check

Can you find it?

Find 37. Qc5+. What is the idea?

Drag the move on the board, or type the move if you already see it.

Need a hint?

The answer is a check idea. Start by checking forcing moves.

Solution: Qc5+Qc5+ is a forcing move. It keeps initiative by using check pressure, so the defender has to respond before solving the larger king-safety problem.

Puzzle 5white to movecheck

Check

Can you find it?

Find 36. Qxd5+. What is the idea?

Drag the move on the board, or type the move if you already see it.

Need a hint?

The answer is a check idea. Start by checking forcing moves.

Solution: Qxd5+Qxd5+ is a forcing move. It keeps initiative by using check pressure, so the defender has to respond before solving the larger king-safety problem.

From famous game to your games
1

Watch the moment

See why the tactic worked in the original game.

2

Solve the pattern

Train the same motif before revealing the answer.

3

Import your games

ChessCoach finds similar mistakes and chances in your own play.

Import my games and build my training plan →

Full PGN

[Event "OHRA-B"]
[Site "Amsterdam"]
[Date "1989.??.??"]
[Round "?"]
[White "Polgar, Judit"]
[Black "Hulak, Krunoslav"]
[Result "1-0"]
[WhiteElo "2555"]
[BlackElo "2550"]
[ECO "B85"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be2 a6 7.O-O Nf6 8.Be3 Be7
9.f4 d6 10.Qe1 Bd7 11.Qg3 O-O 12.Rae1 b5 13.a3 Nxd4 14.Bxd4 Bc6 15.Bd3 Rab8
16.e5 Ne8 17.f5 exf5 18.Rxf5 dxe5 19.Qh3 h6 20.Bxe5 Qa7+ 21.Kh1 Bd6 22.Rg5 Qf2
23.Rf1 Qxf1+ 24.Bxf1 hxg5 25.Bd3 f5 26.Bxf5 Bxe5 27.Qh7+ Kf7 28.Qg6+ Ke7
29.Qe6+ Kd8 30.Qxe5 Rb7 31.Kg1 Rbf7 32.g4 g6 33.Qb8+ Ke7 34.Nd5+ Bxd5 35.Qe5+ Kd8
36.Qxd5+ Kc7 37.Qc5+ Kb8 38.Qb6+ Rb7 39.Qd8+ Ka7 40.Bxg6  1-0

Want this kind of breakdown for your own games?

Import your Chess.com games or upload a PGN and ChessCoach will find the tactics, blunders, and training patterns you actually need to work on.

Analyze my games