What is castling in chess?

Castling is the one move where two pieces move at once: the king slides two squares toward a rook, and that rook jumps to the square the king crossed. It is legal only if neither piece has moved, the squares between are empty, and the king is not in check and does not pass through or land on an attacked square.

Does the Double Eagle app include both full games?

Yes. Double Eagle: Chess & Checkers includes complete chess — castling, en passant, promotion, threefold repetition, the fifty-move rule — and complete American Checkers with forced captures, multi-jumps, and kings, plus game clocks of 5, 10, or 15 minutes per side. Play the computer at three difficulty levels or pass-and-play a friend, fully offline.

How to Play Chess & Checkers — Rules & Strategy

Q: Are captures really forced in checkers?

Yes — in American Checkers (English draughts), if a jump is available you must take it, and a multi-jump must be completed to its end. Forced captures are what give checkers its tactical depth: good players deliberately offer captures to pull opponents into losing sequences.

Q: How does a chess game end in a draw?

The main draws are stalemate (a player to move has no legal move but is not in check), threefold repetition of the same position, the fifty-move rule (fifty moves by each side with no capture or pawn move), insufficient material to checkmate, and mutual agreement.

Chess and checkers share a board and a battlefield spirit, and between them they have taught the world to think ahead. Chess is the deeper rulebook — six different pieces, each with its own powers; checkers (American Checkers, also called English draughts) is the purer duel — identical men, forced captures, and no place to hide. This guide teaches both from an empty board: setup, movement, special rules, and how each game is won.

How to Play Chess

Objective and setup

The goal is checkmate: attacking the enemy king so that no legal move can save it. Each side begins with sixteen pieces on an 8×8 board — from each player's view, white (or black) pieces fill the two nearest rows: rooks in the corners, then knights, then bishops, with the queen on her own color and the king beside her, and eight pawns on the row in front. A light square always sits in each player's right-hand corner. White moves first, then the players alternate.

How the pieces move

King — one square in any direction.
Queen — any distance along a rank, file, or diagonal.
Rook — any distance along a rank or file.
Bishop — any distance along a diagonal (each bishop lives on one color forever).
Knight — an "L": two squares one way, then one square sideways. The only piece that jumps over others.
Pawn — one square forward (two from its starting square), but captures one square diagonally forward.

A piece captures by landing on an enemy piece's square. You may never make a move that leaves your own king attacked.

The special moves

Castling — the king slides two squares toward a rook and the rook jumps to the square the king crossed. Legal only if neither has moved, the path is clear, and the king is not in, passing through, or landing in check.
En passant — when an enemy pawn advances two squares and lands beside your pawn, you may capture it "in passing" as if it had moved one — but only on the very next move.
Promotion — a pawn reaching the far rank becomes any piece you choose, almost always a queen.

Check, checkmate, and draws

A king under attack is in check and must be rescued immediately — by moving, blocking, or capturing the attacker. If no rescue exists, it is checkmate and the game is over. Games can also be drawn: stalemate (no legal move but not in check), threefold repetition of a position, the fifty-move rule (fifty moves per side without a capture or pawn move), insufficient mating material, or agreement.

How to Play American Checkers

Objective and setup

Win by capturing all the opponent's pieces — or by leaving them with no legal move. Each player places 12 men on the dark squares of the three nearest rows of the same 8×8 board. The player with the darker pieces moves first, and play alternates.

Moving and jumping

Men move one square diagonally forward onto an empty dark square.
A man captures by jumping an adjacent enemy piece into the empty square beyond it.
Captures are forced. If a jump exists, you must take it — and a multi-jump must be carried through to its end, hopping piece after piece in a single turn.

Kings

A man reaching the far row is crowned a king and may thereafter move and jump diagonally backward as well as forward. Crowning ends the turn, even if a jump appears available. Kings dominate the endgame — most checkers games are decided by who crowns first and how well those kings hunt.

Playing with a Clock

Both games sharpen under time pressure. With game clocks, each player has a fixed budget — commonly 5, 10, or 15 minutes for all their moves — and running out of time loses the game. Double Eagle: Chess & Checkers includes real clocks at all three of those settings for both games, along with legal-move highlights, coordinates, and hints while you learn.

Strategy & Tips

Chess

Fight for the center. Pieces posted on or aiming at the four central squares control the most territory. Open with central pawns and develop toward the middle.
Develop before you attack. Knights and bishops out, castle early, connect your rooks — an attack launched by one piece alone almost always fails.
Don't move the same piece twice in the opening without a concrete reason; every repeat move is a free move for your opponent.
Ask what changed. After every enemy move: what does it attack, what did it stop defending, what file or diagonal just opened?
Value the pieces — pawn 1, knight and bishop 3, rook 5, queen 9 — but remember position outranks material: a trapped queen is worth less than an active knight.

Checkers

Use the forced capture as a weapon. Offering a man your opponent must take is how two-for-one shots are built — count every forced sequence to its end before you commit.
Hold your back row. The rear men guard the crowning squares; keep them home until the middle game demands them.
Race for the first king. A king's backward reach changes everything — a one-king advantage in the endgame is usually decisive.
Move as a phalanx. Lone advanced men get jumped; men advancing in connected diagonals protect each other.

Frequently Asked Questions

What is castling?

The one two-piece move in chess: the king slides two squares toward a rook and the rook jumps to the square the king crossed. Neither piece may have moved, the path must be clear, and the king may not castle out of, through, or into check.

Are captures really forced in checkers?

Yes. In American Checkers, an available jump must be taken, and a multi-jump must be completed. It feels harsh to beginners — and it is precisely what gives the game its sacrificial tactics.

How does a chess game end in a draw?

Stalemate, threefold repetition, the fifty-move rule, insufficient mating material, or agreement. Good players use these rules actively — steering a lost endgame into a stalemate trap is a time-honored save.

Does the Double Eagle app play the full rules?

Yes — real chess with castling, en passant, promotion, threefold repetition, and the fifty-move rule, and real checkers with forced captures, multi-jumps, and kings. Nothing is left to chance: the computer plays from the same position you see, its move generation is verified against the standard perft test positions, and difficulty (three levels) changes only how deeply it thinks — never the rules it thinks with. Play the computer or pass-and-play a friend with an optional rotating board, 100% offline and ad-free at launch.

More Game Guides

Master the rest of the classics with our other guides:

Two Timeless Duels, One Crown

Double Eagle: Chess & Checkers is coming soon to Google Play from Double Eagle Games — both complete games on one handsome board, with real clocks, honest AI, and pass-and-play. Fully offline, ad-free at launch.

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