Castling Trainer

Let's start with a position that breaks intuition. The king on b1 is pressed up against the rook on a1, yet we're castling the other way — with the rook on h1, across the whole board. The beginner here drags the king two squares, like in classical chess, and wonders why it doesn't work. In 960 there's one gesture: the king goes straight onto the rook. Show me kingside castling.

King g1, rook f1. Distance doesn't matter — the final squares do.

Same position, opposite flank. The king on b1 and the rook on a1 stand right next to each other — and many are convinced you can't castle when adjacent. You can: the 960 rules don't forbid it. The king only has to step to c1, and the rook will hop over him to d1. Execute queenside castling.

King c1, rook d1. Adjacent castling — a test you passed on the first try.

Ooh look, a familiar picture — king on e1, rooks in the corners, just like regular chess! The classical setup is one of the 960 positions too, I couldn't believe it at first. The gesture is still ours though, the nine-sixty one: drag the king not two squares but straight onto the rook on h1. I once dragged him to g1 out of habit — and got all confused. Let's do kingside castling!

O-O! See, the classics and 960 are best friends!

And now the other way — queenside castling from the same familiar position! The king goes to c1, and the rook runs all the way from the a1 corner to d1 and stands beside him like a bodyguard. I used to mix up which side was the "long" one — remember: it's the one with the queenside flank. Drag the king onto the rook on a1!

O-O-O! Both classical castlings are in your collection!

Now this is my favourite trick — "castling in place"! The king is already standing on g1, right on his final square. Think there's nothing to castle? Rookie mistake: you still need to castle so that I fly out to f1 and take the file. The king won't budge a single square — I do all the work. Drag the king onto the rook on h1!

The king didn't move an inch, and I'm already on f1! Now that's service.

Forced march! The king is on g1, and queenside castling will haul him all the way to c1 — four squares at parade step. You'd never see that in classical chess, but in 960 — be my guest. The key condition: the whole g1–c1 route must be clear and not under fire, and here it's clear — use it. Beginners simply don't notice these long-distance castlings and lose tempo. King — onto the rook a1, forward!

Half the board in one gesture! I love the grand scale.

The king stands on c1 — almost in the corner, far from the kingside. But kingside castling is still allowed for him, can you imagine? He'll march from c1 all the way to g1, and the rook from h1 will meet him on f1. I first thought you couldn't castle from that far away — turns out you can, as long as the road is clear. Drag the king onto the rook on h1!

You did it! The king made it to g1 safe and happy!

The "in place" trick again, but now on the queenside! The king is already standing on c1 — exactly where queenside castling leads. So he won't stir, while the rook hops from b1 to d1 — yes, formally "through" the king; in castling that's legal. Beginners don't see a move here at all: "everything's already in place." But you're losing tempo! King — onto the rook b1.

Rook b1 → d1, and the king didn't raise an eyebrow. Clean work!

The king on d1 — right in the middle of the first rank, between two rooks. Kingside castling will send him to g1 — three squares towards the corner, under the pawns' protection. I've noticed: when the king is in the centre, he's easier to attack, so you want to castle as soon as you can. Drag the king onto the rook on h1!

The king is hiding on g1! Now he's at peace — and so am I.

Same position, but now queenside — and there's a funny twist here! The king will step from d1 just one square, to c1, while the rook runs over from a1 and lands… exactly on d1, where the king was just standing! It's like the pieces swap houses. It confused me at first, and then I got it: they're simply going to their lawful squares, c1 and d1. Drag the king onto the rook on a1!

They swapped houses! King c1, rook d1 — all by the rules.

King on f1, me on h1 — kingside castling with a catch. The king takes one little step to g1, and I jump straight onto f1 — the square he was just standing on! We swap zones, like soldiers on rotation. The beginner here often thinks the pieces will collide — they won't, castling happens in a single motion. King — onto the rook h1!

Rotation complete: king g1, me on f1. Like clockwork!

Now from the same spot — a long-range raid! The king leaves f1 for queenside castling on c1: three squares through the centre of the board. Remember the combat rule: the king may not pass through attacked squares, so in a real game check the entire f1–c1 route. Here the horizon is clear — no attackers. The rook on a1 will take d1 and bring the file under control. King — onto the rook a1!

The long queenside raid — done! King in the bunker, rook at battle stations.

A most curious case, your attention please. The king on b1 is heading for kingside castling on g1, but directly in his path, on c1, stands… his own castling rook. The beginner will decide the path is blocked — and will be mistaken. The rule states: the path must be free of all pieces except the castling participants themselves. The king and rook will part ways elegantly in a single motion: he to g1, she to f1. If you please: king — onto the rook c1.

They parted by protocol. Order triumphs even in tight quarters.

King on d1, rook on e1 — neighbours in the very centre of the first rank. Kingside castling will separate them delicately: the king proceeds to g1, the rook shifts just one square, to f1. Observe the economy: minimal movement — maximal benefit, the king sheltered, the rook in play. The hasty beginner moves the king two squares here and lands on e1 — his own rook's square. There is only one correct gesture: king — onto the rook e1.

Economical and precise. I prize moves that contain nothing superfluous.

From the same position — the pearl of the collection: the "pirouette" castling. The king stands on d1, the rook on c1, and after queenside castling they will exchange squares exactly: the king takes c1, the rook takes d1. No other piece on the board is capable of such a thing. The doubting beginner looks for a trick here — there is no trick, only the strict logic of the final squares. King — onto the rook c1, if you would be so kind.

The pirouette, executed flawlessly. Geometry applauds.

King f1, rook g1 — another pure swap, this time on the kingside. After kingside castling the king will stand on g1, the rook on f1: exactly the squares they occupy now, but the other way round. Minimal movement, maximal effect — my style. Anyone who starts moving the pieces one at a time here has missed the point: castling is one move. King — onto the rook g1.

The f1 ↔ g1 swap, accepted. Concise — just how I like it.

Let's change colour — see how you hold up as Black. The rule is mirrored: Black's kingside castling brings the king to g8, the rook to f8. The eighth rank is your first, and the final squares are the same, just with an eight instead of a one. Whoever fumbles the coordinates as Black loses seconds on the clock — and I don't forgive seconds. King e8 — onto the rook h8.

King g8, rook f8. The colour changed — the precision didn't.

And queenside as Black — for full symmetry. The king heads to c8, the rook from the a8 corner lands on d8. Note: after queenside castling the king stands slightly closer to the centre than after kingside — so in a real game check the b- and c-files before hiding there. Here it's all clear. King e8 — onto the rook a8.

King c8, rook d8. Both sides of the board obey you now.

Black, king on b8 hugging the rook on a8 — and you're ordering kingside, to the opposite edge! The king faces a dash b8 → g8 across the whole rank, and my sister on h8 will meet him on f8. A double trap for the beginner: the unfamiliar colour AND the adjacent rook throwing you off — but you're a seasoned fighter by now. King — onto the rook h8, charge!

The full-rank dash as Black — captured! You're growing before my eyes.

The final hurdle — and my signature number again, now as Black. The king has already dug in on g8, his final square, so during castling he won't stir: all the work goes to the rook, which jumps from h8 to f8. Remember: even when only one piece moves, it's a full-fledged castling, in one gesture. King — onto the rook h8, and the trainer is yours!

Twenty out of twenty! Castling-960 is now your standard-issue weapon. Proud of you, soldier!