return moves.concat(zenCaptures.filter(m => {
const hash = m.start.x + "." + m.start.y + "." + m.end.x + "." + m.end.y;
return !hashMoves[hash];
return moves.concat(zenCaptures.filter(m => {
const hash = m.start.x + "." + m.start.y + "." + m.end.x + "." + m.end.y;
return !hashMoves[hash];