| 1 | p.boxed |
| 2 | | Pawns can promote into an additional enemy king. |
| 3 | |
| 4 | p. |
| 5 | Pawns have the option to promote into an enemy king on the two last ranks, |
| 6 | in addition to their usual moves. |
| 7 | |
| 8 | p This allows more winning tactics: double check on two kings for example. |
| 9 | |
| 10 | figure.diagram-container |
| 11 | .diagram.diag12 |
| 12 | | fen:2kr1bnr/pbq1pppp/1pnpP3/2p5/2B3Q1/2N2N2/PPPP1PPP/R1B1K2R: |
| 13 | .diagram.diag22 |
| 14 | | fen:2kr1bnr/pbq1pkpp/1pnp4/2p5/2B3Q1/2N2N2/PPPP1PPP/R1B1K2R: |
| 15 | figcaption Before and after 1.exf7+. Not checkmate yet: 1...e6. Then 2.Qxe6# |
| 16 | |
| 17 | p |
| 18 | | This variant is based on |
| 19 | a(href="https://www.chessvariants.com/play/erf/Kingmake.html") |
| 20 | | Kingmaker Chess |
| 21 | | from chessvariants.com, invented by Tony Paletta (2001). |