strategy · recognise → explain → apply

Colour complexes: protect the squares your bishop cannot

Connect pawn placement, bishop exchanges and king access.

Explanation styleChoose any style. Age is not playing strength; no birth date is needed.

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Notes and replay positions are saved. Practice games are temporary; export their PGN to keep them.

Choose an example

Boris Spassky – Robert James Fischer

World Championship, Reykjavik, game 5 · 1972.??.?? · 0-1

20. Bc2 · Black to move

Jump to move

What to notice at 20. Bc2

Watch ...g5 and the later ...Nh5-f4 route. White's bishops and fixed centre must be assessed together.

A legally replayed historical example, not a claim that every move is best. A game’s result does not prove every defensive position was lost or drawn.

Game source ↗

Your thinking first

Name the signal, choose a plan, and test the opponent’s most challenging response.

What do you notice?What is your plan, and why?How could the opponent resist?

Recall and explain

1. Does a colour weakness matter without an entry route?

Explain it in your own words before revealing.

2. Why can a fianchetto bishop be hard to replace?

Explain it in your own words before revealing.

3. Are opposite-coloured bishops always drawish?

Explain it in your own words before revealing.

Make it memorable

Who guards the missing colour?

Teach this to a friend in one minute. Then return to a different example and look for the same signal without being told its name.

Reflect and revisit

This is your self-assessment, not an engine grade or a promise of mastery.

Connect the ideas

Sources and further reading

Original GolgiChess teaching and game analysis. Topic references are credited below; no affiliation or endorsement is implied.

strategy · recognise → explain → apply

Colour complexes: protect the squares your bishop cannot

Connect pawn placement, bishop exchanges and king access.

Explanation styleChoose any style. Age is not playing strength; no birth date is needed.

Loading progress…

Notes and replay positions are saved. Practice games are temporary; export their PGN to keep them.

Choose an example

Boris Spassky – Robert James Fischer

World Championship, Reykjavik, game 5 · 1972.??.?? · 0-1

20. Bc2 · Black to move

Jump to move

What to notice at 20. Bc2

Watch ...g5 and the later ...Nh5-f4 route. White's bishops and fixed centre must be assessed together.

A legally replayed historical example, not a claim that every move is best. A game’s result does not prove every defensive position was lost or drawn.

Game source ↗

Your thinking first

Name the signal, choose a plan, and test the opponent’s most challenging response.

What do you notice?What is your plan, and why?How could the opponent resist?

Recall and explain

1. Does a colour weakness matter without an entry route?

Explain it in your own words before revealing.

2. Why can a fianchetto bishop be hard to replace?

Explain it in your own words before revealing.

3. Are opposite-coloured bishops always drawish?

Explain it in your own words before revealing.

Make it memorable

Who guards the missing colour?

Teach this to a friend in one minute. Then return to a different example and look for the same signal without being told its name.

Reflect and revisit

This is your self-assessment, not an engine grade or a promise of mastery.

Connect the ideas

Sources and further reading

Original GolgiChess teaching and game analysis. Topic references are credited below; no affiliation or endorsement is implied.