Checkers Tips: Forced Captures, Multi-Jumps and Beating the AI (2026)

Last updated: October 7, 2026 · Tested on Playnesta's Checkers build (self-hosted Valencinn/Checkers-AI @ 743263a, MIT) · Board: 8x8, 12 men each · You: blue, first move · AI: minimax depth 3

Method: every number below comes from this site's playable build and was re-checked in a headless browser. From the shipped code: the board is 64 squares with 12 red and 12 blue men, blue always moves first, and the opening offers exactly 7 quiet moves (measured, not quoted). The AI is minimax with DFS capture expansion searching depth 3, and it answered in 15-20ms per move across three different openings in the headless run. The headless run passed 27/27 checks: a clean start with zero console errors, zero external requests and zero 4xx responses; the forced-capture rule on a set position; a two-capture sequence expanded by the DFS; a real mouse click moving a man and passing the turn; the AI replying and returning the turn; a stripped-board win correctly awarded to blue; an in-page restart restoring 12 men each; and both production stages (348x261 and 894x670) with no overflow, every square inside the stage and hit-testing to itself — plus a real tap-to-move and an AI reply on the phone stage.

1. You only get seven first moves - all of them quiet

The opening is smaller than it looks. With 12 men on the board, only the five men on your third rank can move, and they have exactly seven landing squares between them. No capture is possible on move one, so the whole opening is positioning: which of your men steps forward, and what does it leave behind?

Prefer steps that keep your back rank covered. A man that steps from the edge opens only one reply square; a man that steps from the centre opens two but also guards two. There is no trick here, only bookkeeping: count your seven, pick the one that leaves the fewest of your men hanging, and let the AI show you its plan first.

2. Captures are forced - and that is a weapon, not a chore

The single most important rule: when any capture exists, you must take one. The board enforces it — only capture landings glow. Beginners read this as a restriction. Strong players read it as the only forcing move in the game: if you can offer the AI a capture it must take, you decide where the next two moves happen.

That cuts both ways. Before every quiet move, ask what capture it gives away: a man stepped next to a red piece with an empty square behind it is not an attack, it is a donation. The AI searches three moves deep and will always accept free material, so a hanging man survives on average less than one full round.

3. After you capture, look again before you celebrate

A capture does not end your turn by itself. If the same piece can capture again from its landing square, your turn continues and you must keep jumping — the board keeps only the next captures glowing until none are left. Multi-jumps of two and three are routine; the search expands them as single sequences, so the AI sees the whole chain before it offers you the first jump.

Practical habit: when the glow stays on after your jump, slow down. The second landing chooses the third, and the most common beginner loss is a double capture whose final square hangs the piece that just did all the work. Count the landings, not the captures.

4. Crown on purpose: kings change the geometry

A man that reaches the far rank crowns into a king (marked with a crown) and then steps and captures one square on all four diagonals. A king is worth roughly two men in the AI's own evaluation, and the reason is mobility: backwards movement means a king is never stranded on the far rank the way a man is.

But do not race to crown. Every man spent marching to the far rank is a man not holding the centre, and a king with no supporting pieces gets herded. Crown the man that is already closest when the way is genuinely clear; otherwise keep your men in a compact block where each guards the next.

5. Know how the round actually ends

The round ends the moment the side to move has no legal move, and that side loses — you do not have to capture every last piece, you only have to leave the AI with nothing to play. That is why blocking matters as much as capturing: a red man with all four (or both forward) landings occupied is as dead as a captured one, except it still clutters the AI's side of the board.

Two positions are automatic draws: a lone king against a lone king, and any position repeated three times. If you are a piece down with no attack, steering toward the repetition is a legitimate save — the board tracks positions and declares it for you.

6. What the AI sees (depth 3, milliseconds)

The red opponent is a minimax search with DFS capture expansion: it grows every reply three moves deep, assumes you answer perfectly, and picks the line that maximizes its material (man 1, king 2). It has no opening book and no endgame table — it simply out-counts you. Measured think time is 15-20 milliseconds per move, so it never rushes and never stalls.

How to play against that: it understands material perfectly and position barely at all. It will always take free pieces, so sacrifices must be real traps, not hope. It defends captures one move at a time, so a two-for-one shot that lands on a safe square works even when a one-for-one does not. And because it has no memory between moves beyond the board, the same positional squeeze works twice — it will not learn, but it will not blunder either.

FAQ

How do you play Checkers?

Tap one of your blue pieces to see its legal landings glow, then tap a glowing square. Men step one square diagonally forward; jump an adjacent red piece into the empty square behind it to capture. Captures are forced, multi-jumps continue the same turn, and reaching the far rank crowns a king. You move first.

Do I have to take a capture?

Yes. When any capture exists the board only offers capture landings — for you and for the AI. Offering a capture the opponent must take is the basic forcing move of the game.

How does a multi-jump work?

After a capture, if the same piece can capture again it must: your turn stays open and only the next captures glow. The turn passes only when no further capture exists for that piece.

What does a king do?

A crowned man moves and captures one square on all four diagonals instead of only forward. Kings are worth about two men, but an unsupported king gets herded, so crown with a plan.

How do you win?

Leave the AI with no legal move on its turn — that side loses immediately. You do not need to capture everything. A lone king each and any threefold repeated position are draws.

How strong is the AI?

It is a depth-3 minimax with full capture search: tactically perfect inside three moves, positionally naive. It always takes free material and answers in milliseconds, so beat it with safe squares and two-for-one shots, not with hanging bait.

Does it work on a phone?

Yes. The board is fitted to the measured stage so all 64 squares sit inside the phone frame with no scrolling, and a tap runs the same code path as a mouse click; the move list panel appears on wider screens.

Where can I play it?

Right on this site's checkers page. The engine is the MIT-licensed Checkers-AI by Valencinn and contributors (commit 743263a), self-hosted with its five modules byte-identical; the page shell, stage fit, bridge and touch shim are Playnesta-original. No bitmap, audio or font asset ships with the page and nothing is fetched at runtime.