Starts with the letter 'B'
- Back-to-Back Chess. Both sides start "Back-to-Back", seperated by an uncrossable line on a specially-shaped 100 square board. (14x8, Cells: 100) By Paul Kreutzer.
- Balbo's chess. Board with a strange shape designed to make Bishops stronger in relation to Rooks. (Cells: 68) Author: Hans L. Bodlaender and Fergus Duniho. Inventor: M G Balbo.
- Battle of the Six Armies. Construction of board and pieces to play B6A. By Graeme C Neatham.
- Battle of titans. Missing description (9x5x3, Cells: 135) By Daniil Frolov.
- Beau Monde Chess. Large variant where pieces move with variations of the Queen move. (11x10, Cells: 100) By Sergey Sirotkin.
- Ben 39. Pieces move on squares and corners of board with 37 fixed and two movable squares. (Cells: 39) By Ben Good.
- Beryl Chess. Variant on board of 39 triangles. (Cells: 39) By Alexandre Muñiz.
- Beyond Chess (tm). Commercial variant with dynamic board. (8x8, Cells: 64) Author: David Howe. Inventor: David Crockett.
- Bolyar Chess. A historical variant, native to Bulgaria, with imaginative rules (zrf available). Author: M Winther.
- Bombardier Chess. Introducing the Bombardier, combining a rook with a camelrider (zrf exists). By M Winther.
- Border Wars. Game played on the 42 edges of a grid, with elements of Shogi and XiangQi. (Cells: 42) By Jared B. McComb.
- Border Wars II. Game played on line edges with Shogi-like aspects. (Cells: 44) By Jared B. McComb.
- Bottleneck Chess. Most pieces start the game locked up in two bottleneck parts of the board. (Cells: 41) By Köksal Karakus.
- The Bridge 41. 41 square board with bridge in the middle. (5x9, Cells: 41) By Hubert Lamontagne.
- Building Chess. Variant that starts with a board of 25 squares, but each player adds a square after their move. (8x8, Cells: 64) By Sergey Sirotkin.
Total items listed: 15