Battle Acre

The Board

Initial Array

160 trigs - 40 pieces per side

notes:

160 in hexadecimal is A0

160 = 2⁵ x 5, while 64 = 2⁴ x 4

an ancient measure of area was a (square) pole = 30.25 sq.yds
and 160 x 30.25 = 4840 sq.yds = 1 Acre.

Cell referencing

notes:

21 files a to u, only central 2 ranks (6 and 7) have all files
12 ranks 1 to 12, only central 7 files (h to n) have all ranks.

The Pieces

Name	Images	Diagram	Description	Initial Cells	Value
King			Moves a single step to an adjacent trig that is free from enemy attack. The possible trigs for a King in the red cell are coloured light-blue in the diagram to the left. Kings may also castle - a move in which the King swaps places with a Spire.	red: k12 white: k1	n/a
Queen		See diagrams for Tower and for Ninja.	May move as either the Tower or as a Ninja.	red: k11 white: k2	14.0
Archbishop		See diagrams for Spire and for Bishop.	May move as either a Spire or a Bishop.	red: k10 white: k2	12.0
Tower			Moves in a series of steps through the edges or sides of a trig. May not leap over any blocking piece or pieces.	red: g11 o11 white: g2 o2	11.0
Duke			Moves either as a Marquess (dark-blue trigs) or as a Guard (light-blue trigs).	red: f10 p10 white: f3 p3	8.5
Spire			Moves in a series of steps away from the starting trig, alternating between joining edges and connecting points or vertices. May not leap over any blocking piece or pieces.	red: h12 n12 white: h1 n1	6.5
Bishop			Moves in a series of steps in a straight line away from the starting trig using only connecting points or vertices. May not leap over any blocking piece or pieces. The Bishop is colour-bound.	red: h10 h11 n10 n11 white: h3 h2 n3 n2	5.5
Marquess			May move as either a Viscount or as an Earl.	red: g10 o10 white: g3 03	5.0
Champion			May make a single step across a joining edge; shown by a black dot. May leap 2 trigs along a Spire's path; shown by a white dot. May leap 2 trigs along a Bishop's path; shown by a red dot.	red: j11 l11 white: j2 l2	4.0
Guard			Moves a single step to an adjacent trig (coloured light-blue in the diagram). This is the same as the King's move but without the "not-moving-into-check" restriction.	red: j12 l12 white: j1 l1	3.5
Ninja			Makes a series of 2 trig leaps along a Spire's path. This piece is colour-bound and restricted in its reach to 26 trigs.	red: i11 m11 i12 m12 white: i1 m1 i2 m2	3.0
Earl			Leaps 2 trigs: the first via a joining edge; the second via a connecting point or vertex.	red: l10 j10 white: l3 j3	2.5
Viscount			Leaps 2 trigs: the first via a connecting point or vertex; the second via a joining edge.	red: i10 m10 white: i3 m3	2.5
Pawn			A pawn on its starting rank (the left-most pawn in the diagram) may move without capturing one or two steps directly forward (shown by the black dots); or may capture forward one step via a point (shown by the white dots).Capture en passant is allowed. Otherwise (see the right-most pawn in the diagram) a pawn may move one step forwards or sideways without capturing (shown by black crosses); or may capture forward one step via a point (shown by the white crosses). Pawns promote on reaching the furthermost rank (12 for white; 1 for red).	red: rank 9 white: rank 4	1.0

notes:

types:
there are steppers - Guard, Pawn, King
there are crooked leapers (Knight-like) - Viscount, Earl, Marquess, Duke (compound Marquess + Guard)
there are straight leapers - Ninja (is also a rider), Champion (has also a stepper component)
there are also riders - Tower, Spire, Bishop, Ninja (is also a leaper)
and compounds - Duke, Archbishop, Queen.

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