Moddable Chess · Variant 10 of 54

Capablanca Chess

10×8Board 2Players

Capablanca Chess

Invented by World Champion José Raúl Capablanca in the 1920s to address what he saw as the “draw death” of standard chess. A larger board with two new compound pieces creates richer tactical possibilities.

Setup

Board: 10×8 (ten files, eight ranks).

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Capablanca Chess — starting position (10×8) A C A C a b c d e f g h i j 8 7 6 5 4 3 2 1

Capablanca Chess — starting position (10×8)

Pieces

Pieces (per side): Standard 16 pieces plus:

  • Archbishop (♗+♞) — combines Bishop and Knight movement. Placed between the Queen’s Knight and Queen’s Bishop.
  • Chancellor (♖+♞) — combines Rook and Knight movement. Placed between the King’s Knight and King’s Bishop.

Setup (from a-file): Rook, Knight, Archbishop, Bishop, Queen, King, Bishop, Chancellor, Knight, Rook. Pawns on the second rank (10 pawns per side).

Rules

Identical to standard chess with these additions:

  • Castling moves the King three squares toward the Rook (to accommodate the wider board).
  • Pawns may promote to Archbishop or Chancellor in addition to standard pieces.
  • No en passant differences — same rules apply.

Win Condition

Checkmate, same as standard chess.

Strategy

The wider board and compound pieces create more open positions. The Archbishop dominates closed diagonals while the Chancellor controls open files with knight-fork threats. Pawn structure is more flexible with 10 files — flank play becomes viable alongside central control.

Attribution

José Raúl Capablanca, c. 1920. Public domain.