| 1 | p.boxed |
| 2 | | The board is initially empty. |
| 3 | | Add a piece (not giving check) or move one at each turn. |
| 4 | |
| 5 | p. |
| 6 | The king can be added at any moment, but while he hasn't landed |
| 7 | no capture can be done. So you could move or land your king "into check" |
| 8 | if your opponent didn't land his king yet. |
| 9 | |
| 10 | p. |
| 11 | Giving check with a landed piece is forbidden |
| 12 | (assuming both kings are on the board). |
| 13 | |
| 14 | p. |
| 15 | Pawns can be landed on the four first ranks only. A pawn on the first |
| 16 | rank can jump two squares, and be captured en passant. |
| 17 | |
| 18 | figure.diagram-container |
| 19 | .diagram.diag12 |
| 20 | | fen:8/8/3b2r1/3R4/k3Q3/3R4/8/8: |
| 21 | .diagram.diag22 |
| 22 | | fen:8/8/K2b2r1/3R4/k1N1Q3/3R4/5q2/8: |
| 23 | figcaption. |
| 24 | Left: no white king, so the black king is safe. |
| 25 | Right: black to move, there is no way to avoid mate. |
| 26 | |
| 27 | h3 Source |
| 28 | |
| 29 | p |
| 30 | a(href="https://www.chessvariants.com/diffsetup.dir/unachess.html") |
| 31 | | Unachess II |
| 32 | | on chessvariants.com. Unachess I gives a too large advantage |
| 33 | | to white, in the few games I could play. |
| 34 | |
| 35 | p Inventors: Jeff Miller and Edward Jackman (1995) |