What happens when a checker reaches the king row during a double jump?

It depends on the official ruleset: In American Checkers / English Draughts (8x8), when an uncrowned man lands on the King row (squares 1–4 or 29–32), it is immediately crowned a King and its turn ends immediately—it cannot continue jumping backward on that same turn. In Russian Shashki (8x8), the piece crowns immediately mid-jump and MUST continue capturing backward if a legal Flying King capture exists. In Brazilian Damas (8x8) and International Draughts (10x10), passing through the crown row mid-jump does not crown the piece; it crowns only if the capture sequence ends on the King row.

How does a game of checkers end in a draw under the 40-move rule?

Under WCDF Article 1.30 (the 40-Move Rule), a player may claim a draw when 40 consecutive moves have been played by each side (80 plies total) without a single piece being captured AND without any uncrowned man advancing toward the King row. If any capture occurs OR any regular man moves forward, the 40-move counter resets to zero. Additionally, WCDF enforces a 20-move (or 10-move) endgame limit for minor material advantages like 2 Kings vs 1 King.

How do you write and analyze Portable Draughts Notation (PDN) in checkers?

Portable Draughts Notation (PDN 3.0) numbers the 32 playable dark squares of an 8x8 checkers board from 1 to 32, starting at Black's top row (squares 1–4) down to White's bottom row (squares 29–32). Non-capturing moves use a hyphen (e.g., 11-15), while mandatory captures use an 'x' (e.g., 15x22 or multi-jump 15x22x31). You can paste any PDN game or FEN string directly into https://nextcheckersmove.com/review.html for instant 1-click CAPS2 accuracy analysis.

← Back to Checkers Guides • Published October 19, 2026 • 9 Min Read

Official Checkers King Rules, 40-Move Draw Rule, PDN 1–32 Notation & Best Mobile AI Apps (2026)

Q: Can a king jump both forwards and backwards in the same turn in checkers?

Yes. Under official World Checkers Draughts Federation (WCDF) and FMJD rules, a crowned King can jump both forward and backward within the same multi-jump turn (for example, jumping forward from square 14 to 23 and immediately jumping backward from 23 to 16 in a zig-zag path: 14x23x16), provided it lands on an empty dark square after each jump and never jumps the same enemy piece twice.

Even experienced checkers players encounter edge-case rule disputes during competitive matches: Can a King jump forward and backward in the same turn? Does a piece that reaches the King row mid-jump keep jumping? When does the 40-move draw counter reset? And how do you export or analyze a game using Portable Draughts Notation (PDN)?

This authoritative reference guide covers the exact World Checkers Draughts Federation (WCDF) and FMJD laws for King movement, promotion timing, tournament draw rules, PDN 3.0 analysis workflows, and a complete comparison of the best mobile AI checkers apps and board scanners in 2026.

📜 Interactive 9-Variant Rules Matrix 📊 Paste PDN in 1-Click Game Review ⚔️ Play vs 34 AI Bots & Friends

1. Advanced King Movement & Mid-Jump Promotion Rules

Can a King Jump Both Forwards and Backwards in the Same Turn?

Yes. Under official WCDF and FMJD rules across American Checkers (8×8), Russian Shashki (8×8), Brazilian Damas (8×8), and International Draughts (10×10), a piece that is already crowned a King at the start of the turn may jump in any combination of forward and backward diagonal directions during a multi-jump sequence.

Concrete Zig-Zag Example (1–32 PDN): Suppose a White King stands on square 14 with Black pieces on squares 18 and 19 (leaving landing squares 23 and 16 empty). The White King legally jumps backward from 14 over 18 to land on 23, and immediately pivots to jump forward from 23 over 19 to land on 16 (written in PDN as 14x23x16).
One-Capture-Per-Piece Boundary: During a multi-jump turn, a King may never jump over the exact same enemy piece twice.

What Happens When a Regular Piece Reaches the King Row During a Double Jump?

Promotion timing during a multi-jump sequence is the single most important rule distinction between American, Russian, and Brazilian/International draughts:

Ruleset Variant	Mid-Jump Landing on King Row	Concrete Scenario Example (Black Moving Downward to Row 29–32)
🇺🇸 American Checkers / English Draughts (8×8)	Crowns Immediately & Turn Ends (WCDF Art. 1.19)	A Black man on `22` jumps over `26` to land on King-row square `31`. Even if another White piece sits on `27` with square `24` empty, Black's piece crowns on `31` and its turn ends immediately. It cannot jump backward until its next turn.
🇷🇺 Russian Shashki (Русские шашки 8×8)	Crowns Immediately Mid-Jump & Continues as Flying King	A White man jumps onto King-row square `2`. It transforms into a Flying King (Дамка) mid-turn and must immediately continue jumping backward along any long diagonal if a legal Flying King capture exists.
🇧🇷 Brazilian Damas (8×8) & 🌍 International (10×10)	Does NOT Crown Mid-Jump (Crowns Only at End of Turn)	If an uncrowned man touches the King row mid-jump (e.g., `11x2x9`) and jumps back out as a regular man, it remains an uncrowned man! It is crowned a Flying King only if its capture sequence terminates on the King row.

Short Kings vs. Flying Kings (Dama Voadora / Летающие дамки)

Short Kings (American / English / Italian 8×8): Move 1 diagonal square forward or backward on quiet turns, and jump over an immediately adjacent enemy piece into the empty square directly behind it.
Flying Kings (Russian Shashki, Brazilian Damas, International 10×10): Slide across any number of unoccupied squares along a forward or backward diagonal. When capturing, a Flying King can jump a distant enemy piece across multiple empty squares and land on any empty square beyond it along the same diagonal (unless constrained by mandatory continuation jumps).

2. Official Draw & Endgame Conditions: The 40-Move, 20-Move & Stalemate Rules

Many casual players mistakenly believe that checkers games can shuffle Kings back and forth forever, or that trapping an opponent with no legal moves is a "stalemate draw" like in chess. Official WCDF tournament laws strictly define both situations:

⚠️ Critical Rule — Blocking All Moves ("Stalemate") is a WIN, Not a Draw!
Unlike chess, there is no stalemate draw in checkers. Under WCDF Article 1.28, a player wins the game either by capturing all opponent pieces OR by blocking all remaining opponent pieces so the opponent has no legal move on their turn.

Official Draw Rule	Exact Move Threshold	Reset Conditions & Practical Tournament Application
40-Move Rule (WCDF Article 1.30)	40 moves by each player (80 plies / half-moves)	A player on turn may claim a draw when 40 moves have been completed by each player without: (1) any piece being captured, AND (2) any uncrowned man advancing toward the King row. Reset condition: Any capture OR any forward move by a regular man immediately resets the 40-move counter to `0`.
20-Move / 10-Move Endgame Advantage Rule	20 moves (or 10 moves in specific tablebase positions)	When one player holds a small endgame advantage (such as 2 Kings vs 1 King, 3 Kings vs 2 Kings, or 4 Kings vs 3 Kings), the defending player can request a move count. The stronger side must either win or achieve a tangible material/positional conversion within 20 moves, or the game is declared a draw.
Threefold Repetition of Position	3 identical occurrences	If the exact same board configuration (with the same player to move and only Kings moving without captures or pawn advances) occurs 3 times, either player may claim an immediate draw.

3. Portable Draughts Notation (PDN 3.0) & Post-Game Analysis Workflows

Portable Draughts Notation (PDN) is the universal standard used by checkers engines (Next Checkers Move, Kingsrow, Cake, and Scan) to record board setups, move histories, and tournament metadata—analogous to PGN in chess.

How the 1–32 Board Numbering & Move Syntax Work

Board Orientation: Place the board so a dark square is in your bottom-left corner (squares 29 for White/Red at the bottom, and 4 for Black at the top) and a light square is in your bottom-right corner ("White on the Right").
1–32 Numbering: Only the 32 dark squares are numbered, reading left-to-right from Black's back rank at the top (Row 1 = 1, 2, 3, 4; Row 2 = 5, 6, 7, 8; Row 3 = 9, 10, 11, 12) down to White's back rank at the bottom (Row 6 = 21–24; Row 7 = 25–28; Row 8 = 29, 30, 31, 32). Read our complete 1–32 Board Setup Guide for a visual diagram.
Quiet Moves vs. Captures: Non-capturing moves use a hyphen (11-15), while mandatory captures use an x (15x22, or multi-jump 15x22x31).

Standard PDN 3.0 File Structure & FEN Tag Example

You can copy and paste the following standard PDN example directly into our 1-Click Checkers Game Review & PDN Analyzer to see automated CAPS2 accuracy scoring and engine move classifications:

[Event "World Checkers 3-Move Ballot Study"]
[Site "https://nextcheckersmove.com/review.html"]
[Date "2026.10.19"]
[Black "Player 1 (Black Moves First)"]
[White "Player 2 (White/Red)"]
[GameType "21"]
[Result "1/2-1/2"]
[FEN "B:W21,22,23,24,25,26,27,28,29,30,31,32:B1,2,3,4,5,6,7,8,9,10,11,12"]

1. 11-15 23-19 2. 8-11 22-17 3. 4-8 17-13 4. 15-18 24-20 5. 11-15 28-24 6. 8-11 26-23 7. 9-14 18x9 8. 5x14 1/2-1/2

[GameType "21"] designates English/American 8×8 Checkers (20 = International 10×10, 25 = Russian Shashki, 26 = Brazilian Damas).
[FEN "B:W18,K24:B10,K15"] sets up custom endgame or puzzle positions: the first letter (B or W) specifies whose turn it is, followed by White pieces (prefix K for Kings) and Black pieces.

4. Best Mobile Checkers AI Apps & Board Scanners Compared (2026)

Whether you play on an Android phone, an iPhone in iMessage GamePigeon, or a tablet, here is how the top mobile checkers platforms compare in 2026 across AI engine strength, camera/screenshot board scanning, offline support, and multiplayer modes:

Platform / App	Max AI Strength & Bots	AI Screenshot / Camera Scanner	Multiplayer & Clocks	Supported Rulesets
Next Checkers Move (Android App & Mobile Web PWA)	3400+ Elo SIMD128 NNUE + 34 Character Bots (100–3400+ Elo) & 6-Piece Tablebase	✅ Built-in AI Vision Scanner (Scans GamePigeon, 247 Checkers & physical wooden boards in 2s)	✅ 1-Click Friend Link, Quick Match, Local 2P Pass & Play, `1m/3m/5m` Clocks + CAPS2 Game Review	American 8×8, Russian Shashki, Brazilian Damas
GamePigeon Checkers (iOS iMessage)	No AI bots (2-player turn-based iMessage only)	❌ None (Use our GamePigeon Solver to scan screenshots)	iMessage contacts only (no live clocks)	American 8×8 only
247 Checkers / Coolmath Mobile	~1500–1750 Elo (3–4 basic difficulty levels)	❌ None	Local 2-player pass & play only	American 8×8 only
Checkers Arena / Checkers Online	~1800–2100 Elo standard bots	❌ None	Online rooms & friend invite links	American & International variants
Lidraughts Mobile Web	Scan / Kingsrow variant analysis	❌ None	Bullet, Blitz & Rapid arenas	10×10 International, Russian, Brazilian

Frequently Asked Questions

Q: Can a regular checker jump backwards in American Checkers?
A: No. In American Checkers / English Draughts, regular uncrowned men move and jump strictly forward diagonally. Only crowned Kings can move and jump backward in American Checkers. (In Russian Shashki and Brazilian Damas, regular men can jump backward to capture).

Q: How do I scan an iPhone GamePigeon or physical checkers board to find the best move?
A: Open the Next Checkers Move AI Solver or GamePigeon Checkers Solver on your phone, tap 📷 Scan Board Screenshot / Photo, and upload your screenshot. Our 2-stage computer vision grid detector maps all 32 squares, detects regular pieces and Kings, and displays the top 3 engine moves with visual arrows.

🎯 Open 3400+ Elo Checkers Solver & Scanner 📊 Analyze PDN in Game Review 🤖 Play vs 34 AI Bots & Friends