Three chess-logic puzzles, one app. You know how the pieces move — now put that knowledge to work. No chess match, no clock, just the puzzle.
Download on the App StorePlace every piece on the board so that nobody can capture anybody. A perfect standoff — or no deal.
One queen in every color region — but no two queens may share a row, a column, or touch diagonally. Simple rules, devious boards.
Same idea, new arsenal: fill the regions with rooks and bishops without leaving a single piece in another's line of attack.