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BillieKimbah vs dominguezonyoutube

loss

Date: 2026-03-18 18:57:58 | Game Link

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3 key moments

Game Snapshot

King's Indian Attack

Crucial Positions

	move #	position	classification	description
Move #: 50 Move: Bb5 blunder Endgame error lost winning advantage	50	Bb5	blunder	Endgame error lost winning advantage
WHAT HAPPENED Move Played: Bb5 Black played 50...Bb5, sliding the bishop from c4 to b5. The move places the bishop on a square directly in line with White's rook on b8. The bishop becomes completely undefended – White can simply capture it with 51.Rxb5, winning a piece. Additionally, the move does nothing to improve Black's king safety or create counter‑threats; White still threatens the pawn on b2 and the g7/h6 pawns, while Black's own b1 rook and g7 pawn remain undefended. WHY IT'S BETTER Engine suggested: Kd4 The engine recommends 50...Kd4, a king move that centralises the black king, attacks White's pawn on f5 and supports the advance of the a‑pawn. By keeping the king active, Black maintains material balance and generates concrete threats, whereas 50...Bb5 loses a piece for no compensation. The engine line also forces White to respond to the king's infiltration, preserving Black's defensive resources. KEY PRINCIPLE Never hang a piece: Every move must leave your pieces defended or at least not vulnerable to a free capture by a higher‑valued opponent piece.
Move #: 52 Move: Kb4 blunder Endgame blunder in equal position \| Point of no return	52	Kb4	blunder	Endgame blunder in equal position \| Point of no return
WHAT HAPPENED Move Played: Kb4 Black responded with 52...Kb4, moving the king from c5 to b4. This retreat abandons the central squares and steps into the line of White's rook on b8. The rook now attacks the pawn on b5 (Rxb5) and the knight on e4 also eyes c5. Black's pawn on g7 and rook on b1 remain undefended, and the move does not generate any new threats. WHY IT'S BETTER Engine suggested: Kd4 Engine's 52...Kd4 keeps the king in the centre, where it can pressure White's pawn on f5 and support the advance of the a‑pawn. The move also keeps the king away from the rook's file, preventing the loss of the b5 pawn. After 52...Kd4, White's best continuation is 53.Nd2, giving Black a solid position without material loss. The engine's line maintains piece coordination and avoids the tactical shot 53.Rxb5. KEY PRINCIPLE Centralise the king in the endgame: An active king is a powerful piece; retreating it into the opponent's rook file often loses material.
Move #: 55 Move: Kd3 missed opportunity Endgame missed stronger move (gap 186cp)	55	Kd3	missed opportunity	Endgame missed stronger move (gap 186cp)
WHAT HAPPENED Move Played: Kd3 Black played 55...Kd3, moving the king from c4 to d3. The move steps away from the crucial b‑file pawn on b2 and allows White's king to capture the pawn on g7 (Kxg7) without any compensation. Black's pawn on b2, the king on c4, and the pawn on g7 were all undefended; the move does not improve their safety. WHY IT'S BETTER Engine suggested: Kb3 The engine suggests 55...Kb3, a move that directly protects the pawn on b2 and brings the king closer to White's weak pawn on e5. After 55...Kb3, White's best try is 56.Kxg7, but Black can then continue with 56...Kc2‑c3‑c2, targeting the e5 pawn and the a4‑b4 squares. By staying on the b‑file, Black keeps material and creates counter‑play, whereas 55...Kd3 simply concedes the b‑pawn and lets White's king infiltrate. KEY PRINCIPLE Guard your weak pawns with the king: In simplified endings, the king should defend vulnerable pawns and stay close to them; moving away often loses material.

Master Lens

In this King’s Indian Attack game Black (Domínguez) fought hard with solid development and active rook play, but a series of endgame blunders (especially 50...Bb5, 52...Kb4 and 55...Kd3) handed the win to White. The result was a loss for Black despite a promising middle game.

What The GM Did Well By Phase

Opening

Black quickly developed the knights to f6 and a6, placed the bishop on f5 and later on h7, and castled early, which gave the king safety and connected the rooks. By playing ...d5 and ...c6, Black contested the centre and prepared the pawn advance on the queenside, showing the principle of early piece development and king safety.

Middlegame

After the queens were exchanged, Black used the rooks on the open d‑ and c‑files (**...Rfd8**, **...Rd5**, **...Rc5**) to pressure White’s central pawns and to support the advance of the a‑pawn. The active rook on the seventh rank (**...Rxb3**) and the bishop on the long diagonal (**...Bf7**) demonstrated how a well‑placed piece can create threats even with limited material.

Endgame

In the ending Black had a passed a‑pawn and a rook that could have become decisive, but the loss came from three critical mistakes. First, **...Bb5** placed the bishop on a square directly in line with White’s rook, allowing the free capture **Rxb5** and losing a piece. Second, **...Kb4** moved the king into the rook’s file, letting White’s rook attack the b‑pawn and the knight, again losing material. Finally, **...Kd3** abandoned the vulnerable b‑pawn and let White’s king capture the g‑pawn, while the black king moved away from the pawn it needed to protect. These errors illustrate three key endgame principles: never leave a piece undefended, keep the king active in the centre rather than retreating into enemy lines, and use the king to guard weak pawns.

Game Themes

promotion rook and bishop rook and minors fianchetto rooks on seventh rook and knight outside passed pawns castling passed pawns bishop pair