| 1 | p.boxed. |
| 2 | Each capture results in an "explosion" through which all surrounding |
| 3 | pieces other than pawns are removed from the board. |
| 4 | |
| 5 | p. |
| 6 | When a piece P captures an opponent figure on some square S, all pieces |
| 7 | sitting on a square reachable by a king move from S are removed, including P |
| 8 | itself. |
| 9 | The pawns, however, remain: they have to be taken directly to disappear. |
| 10 | |
| 11 | p. |
| 12 | Suicide is forbidden. Thus a king can touch the opponent king and become |
| 13 | immune to checks, like on the following diagrams: 1.Rxf5 is impossible. |
| 14 | |
| 15 | figure.diagram-container |
| 16 | .diagram.diag12 |
| 17 | | fen:rnb5/pp4pp/2p5/N4pK1/3P2k1/8/PP4PP/5R2 a5,b7: |
| 18 | .diagram.diag22 |
| 19 | | fen:8/p5pp/2p5/5pK1/3P2k1/8/PP4PP/5R2: |
| 20 | figcaption Left: before 1.Nxb7. Right: after capture. |
| 21 | |
| 22 | h3 End of the game |
| 23 | |
| 24 | p There are two ways to win, by decreasing strength order: |
| 25 | ol |
| 26 | li Explode opponent king |
| 27 | li Checkmate opponent king |
| 28 | |
| 29 | p Explosions have priority: a checkmate followed by a king explosion loses. |
| 30 | |
| 31 | figure.diagram-container |
| 32 | .diagram |
| 33 | | fen:r3kbnr/pp3ppp/3p4/4p3/8/8/PPPPPPPP/R1BQKBNR: |
| 34 | figcaption. |
| 35 | After the moves 1.Nc3 d6?? 2.Nd5 e5 (forced to avoid king explosion) |
| 36 | 3.Nxc7 |
| 37 | |
| 38 | h3 More information |
| 39 | |
| 40 | p. |
| 41 | Many resources can be found on the web (this variation is played on lichess |
| 42 | and FICS, among others). |
| 43 | This game was played first in 1995 at the German Internet Chess Server (GICS) |
| 44 | according to Wikipedia. |