![]() ![]() ![]() (But many more than the 0.5% or so that you typically see in a generally won end-game.) With the perpendicular move a Dababbarider ( vRsDD) you have even better chances to achieve that,Īnd a relatively small fractions of the possible start positions is draw. So it depends on whether you can cut off the King from reaching that edge. vRsD) has mating potential on any size board,Įxcept that on even-sized boards there is a fortress draw when the bare King is on the edge that the piece cannot reach. It can also be a bit vague what generally won means.Ī piece that moves as Rook in one dimension, and as Dababba in the perpendicular one (e.g. The stalemate result also matters: in Xiangqi even a Pawn is a major, because stalemate is a win. In Knightmate (where the royal moves as a Knight) the Rook is a minor.īoard size matters too: a non-royal King is a major up to 14x14, but a minor on 15x15.Īnd on a cylinder board the Rook is a minor, as to force checkmate with a Rook requires a corner. Whether a piece has mating potential of course depends on how the royal moves: (Think of a color-bound universal leaper, which can teleport to any dark square.) Which in a FIDE context probably would not be worth more than 2 Pawns.Īnd minors can be more valuable than a Queen. The lowest-valued major I could conceive on 8x8 is a leaper with only 5 moves (the Deva, fbrFflW, from Maka Dai Dai Shogi), The number of won positions for such pieces is thus extremely small, and although it is non-zero, we count them as minors.Ĭoincidentally the major/minor division in orthodox Chess correlates perfectly with piece values, but this doesn't have to be the case in general. With orthodox King the necessary and sufficient condition for existence of a checkmate position is that the piece can capture to two orthogonally adjacent squares.Ī Wildebeest ( NC) can do that, but it cannot force checkmate there aren't even any mate-in-2 positions. With some pieces there can be mate positions that cannot be enforced. On the other hand, KBK and KNK are draws by 'insufficient mating material': no checkmate positions are possible at all,Įven not with the poorest possible moves of the bare King ('help mates'), so B and N are minors. In orthodox Chess the situation is clear: KQK and KRK are always won when the strong side is on move, so R and Q are definitely majors. To limit the range of a slider you can click the first square along its path that it should not be able to reach.Ĭlicking on the piece takes away all its moves, and thus clears the entire pane.Īfter you are satisfied with the move, you can press the 'Design Ready' button to play with the piece that moves this way.Ī 'major' is defined as a piece that, together with its own royal, can in general force a win against a bare royal of the opponent. In the pane below you can define moves of a piece by clicking the squares it should be allowed to move to.įirst click defines a leaper move to the square.Ī second click would convert this to a slider/rider move that repeats that step/leap.Ī third click would remove the move again. GraphicsDir=/membergraphics/MSelven-chess/įor trying other board sizes (upto 16 x 16):
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