K-Maps
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Available in: Builder, Library
The K-MAPS card (short for King Safety, Material, Activity, Pawn Structure, Space) provides a structured, visual framework for evaluating any chess position inside the Repertoire Builder. It breaks down the position into five classical components — each representing a different strategic dimension — and displays the balance between White and Black using both a radar chart and a data table. From the header, you can use the vertical ⋮ menu to choose whether to display the Radar, the Table, or Both views.
K-MAPS Metrics
- + King Safety — Measures how secure the king is based on pawn cover, castling status, open files nearby, and proximity to enemy pieces.
- + Material — Evaluates the relative material balance between the two sides, normalized across all piece types.
- + Activity — Reflects the mobility and influence of the pieces, emphasizing how freely they can move and coordinate.
- + Pawn Structure — Considers the integrity of the pawn formation, penalizing weaknesses such as doubled, isolated, or backward pawns, and rewarding connected pawn chains.
- + Space — Estimates board control by measuring how much territory each side influences, especially in the center and on active files.
When enabled, the K-MAPS card automatically calculates these five metrics for the current board position (FEN). The results are normalized between 0 and 1, and displayed for both White and Black. The radar chart provides a quick visual summary, while the table view presents exact percentages for side-by-side comparison.
This feature helps you:
- + Understand how each side performs across different positional dimensions
- + Quickly identify whether advantages stem from safety, structure, or activity
- + Switch between radar, table, or combined modes for flexible viewing