The Move That Converted Reti: How Capablanca's Bishop Beat the Knight

Good day, chess world.

There is a move in this game that changed the history of chess. A young Richard Reti, sitting next to Capablanca as his partner, was certain of the right continuation: develop a piece with tempo, the way Morphy taught, the way everyone had been taught. Capablanca thought for a moment and instead repositioned a piece he had already developed, choosing to damage his opponent's pawns rather than gain a single tempo. Reti was so astonished that he went away and studied Capablanca for years, and it helped set the young man on the road to the hypermodern ideas he would later make famous. This is the game where it happened, Vienna 1914, and the ending that followed is a clinic in its own right.
If you have ever been told that a bishop is better than a knight but never really understood when or why, this is the lesson. Capablanca reaches an ending with a bishop against a knight and rooks still on the board, and he shows exactly which features make the bishop the stronger piece, then converts with a technique you can copy. Watch the full deep dive lesson below, then follow the three turning points here.
https://www.youtube.com/watch?v=kMGBV3arrWc
Capablanca and Reti versus Faehndrich and Kaufmann, Vienna 1914, a consultation game from a French Defense. Capablanca had the black pieces alongside the young Reti. The result is 0-1, and the whole lesson lives in the ending: a bishop against a knight with rooks still on, an untidy mess of pawns on both wings, and a slow squeeze that shows precisely why the bishop is the better piece here.

Why This Game Matters

Here is what I want you to understand. "The bishop is better than the knight" is one of the most repeated and least understood rules of thumb in chess. It is not always true. The bishop wins when the game is spread across both wings, because a bishop reaches from one side to the other in a single move while a knight plods. This ending is the perfect textbook case: weak pawns on both flanks, an asymmetrical structure the knight cannot get comfortable in, a passed pawn, and a black king that races to the centre while White's sits at home. Learn to recognise those features, and you will know, in your own games, when to trade for the bishop and when to keep the knight.

The Opening

I do not dwell on the early moves, but I cannot skip the famous one. Out of a French Defense Black reached a position where the natural move was to develop the last piece with a threat, exactly what the old principles demanded. Instead Capablanca played the extraordinary Bd4, repositioning his dark-squared bishop rather than developing his last piece, purely to force a lasting weakness in White's pawns. That bishop soon traded itself off and left White with damaged, doubled pawns, and that single decision is the one that converted Reti to modern chess. A few moves later Capablanca went further, accepting a ragged cluster of his own isolated pawns in return for planting his other bishop, the light-squared one, magnificently in the centre. If you want the full early detail, the video covers it. From here it is an endgame masterclass.

Key Position 1: A Bishop, a Knight, and Five Reasons (26.Re3)

This is where the ending begins, and it is a model of when the bishop outguns the knight. Count the reasons. First, the fight is on both wings, and only the bishop can be in two places at once. Second, the pawns are asymmetrical and scattered, the kind of mess a knight hates because it finds no stable home. Third, Black has clear targets, White's weak pawns, and a passed f-pawn to support. Fourth, the black king is ready to march into the centre while White's is stuck. Fifth, the knight simply has no good square. On top of all that, the rook and bishop are both long-range pieces that cooperate beautifully, while White's rook and knight talk past each other. That coordination, more than anything, is why Black is winning.

Why the Bishop Beats the Knight Here

This is the idea I most want you to keep. A bishop is only better than a knight when the position lets it use its range, and this one does. Watch how the bishop on e4 rakes both sides of the board at once, supporting Black's operations on the queenside and the kingside without ever moving. There is a subtlety worth knowing: by the book this is a "bad bishop," because Black's own centre pawn sits on the bishop's colour and limits it. Do not be fooled. A bishop is only truly bad if it has nothing to do; this one has targets everywhere and dominates the game. Judge a piece by what it does, not by the label.

Key Position 2: The Two-Front Squeeze (31...Ra6)

Here is the winning method, the principle of two weaknesses. One weakness is never enough; a good defender guards it. So Capablanca ties White down on the queenside, fixing the c-pawn as a target that ties two white pieces to its defence, and only then swings a rook across with Ra6 to open a second front. Now White is stretched. His knight must guard one weakness, his rooks must guard another, and his pieces cannot be in two places at once. Notice too what Capablanca refuses to do: he will not simply grab a pawn by trading his bishop, because that would let White shed a weakness. When you are winning, keep the enemy's weaknesses on the board so you can keep attacking them.

Key Position 3: The Breakthrough (33...b5)

Now the door is kicked open. Having stretched White across both wings, Capablanca throws in b5, a pawn sacrifice whose only job is to rip open the b-file so a black rook can pour down to the seventh and eighth ranks and get at the king. It is the same idea that decided his win over Nimzowitsch, the previous game in this series: give up material, gain lines and activity. After the pawn is taken the rooks invade, the king marches to e5, the bishop dominates the centre, and White's pieces are reduced to shuffling. Faced with a rook about to swing to g8 and a bishop check that wins material, White resigned. Everything flowed from that one earlier decision to damage the structure rather than develop. See the finish in the video: https://www.youtube.com/watch?v=kMGBV3arrWc

The Full Game

Play through the whole game here:

The Modern Take

An engine confirms the win and, pleasingly, confirms Capablanca's own honesty about it. The famous Bd4 is exactly as strong as its reputation, and the conversion is a model of technique. What the machine adds is that Capablanca, ever objective, flagged his own inaccuracies even in a game he was proud of. He pointed out that 23...Kh7 was more precise than the move he played, and that White could actually have held a draw there with a beautiful line, and that bringing the king to e5 before the b5 break would have been cleaner. He was right on all counts, which tells you something: even the finest technicians miss the very best move, and admit it. The engine also flags White's instinctive 27.b3, which planted another pawn on the bishop's colour and handed Black a fresh target, when a rook trade offered better chances. The lesson for your own games is the framework itself. Before you trade a bishop for a knight or the other way around, ask whether the game is on one wing or two, whether the pawns are fixed or fluid, and whether your king can join in. Those answers, not the folk wisdom, tell you which piece is really better.
Which idea will you use first: keep the enemy's weaknesses on the board instead of trading them off, tie the defender to one wing before you open a second, or sacrifice a pawn to open a file? And here is the historical one: would you have played the developing move that Reti expected, or Capablanca's Bd4? Tell me in the comments.

Key takeaways

The bishop beats the knight when the board is wide. A bishop is better only when the game spans both wings, the pawns are scattered, and the king can help. Capablanca's bishop worked both flanks at once while the knight found no home.

Keep the enemy's weaknesses on the board. When you are winning, do not trade your good piece just to grab a pawn. Capablanca refused to swap the bishop, because a live weakness is a target you can keep attacking.

Tie down one wing, then break on the other. One weakness is not enough. Fix a target on one side, stretch the defender, then sacrifice a pawn to open a file and invade. It is the principle of two weaknesses in action.

This is Game 19 in my series on Capablanca's best endings. I am building a clean, fully annotated database of every game in my own words and coaching notes, lesson by lesson. Follow the series for new breakdowns and updates.
What did you find most instructive? Let me know in the comments.
Watch the full breakdown on the ChessExcellence channel: https://www.youtube.com/watch?v=kMGBV3arrWc
Watch the whole series here: https://www.youtube.com/playlist?list=PLZkwv5s1SbCANPY49gUl4Ht92K5tD8KEq