Quick-reference answer file

Week 6 — Pin · Coach answer key

Exactly 10 exercises. Boards match the student handout; answers are permanently visible for quick consultation during class.

Puzzle 1 White to move

White to move · orientation: white

Find a bishop move that creates an absolute pin.

Hint: Look for a diagonal where the knight would stand between your bishop and the king.

Correct move: 1. Bb5!

The bishop on b5 attacks the knight on c6, and the king on e8 is behind it. The knight cannot legally move away.

Source/reference: Original teaching diagram

Puzzle 2 White to move

White to move · orientation: white

Put the rook on the right file to make a pin.

Hint: Which file contains both the black bishop and the black king?

Correct move: 1. Re1!

The rook attacks the bishop on e6. The bishop is now stuck in front of the king on e8.

Source/reference: Original teaching diagram

Puzzle 3 White to move

White to move · orientation: white

Create a relative pin to the black queen.

Hint: Your bishop needs a square that attacks the knight first and the queen behind it.

Correct move: 1. Bb5!

From b5 the bishop attacks c6. If the knight moves, the queen on d7 is exposed.

Source/reference: Original teaching diagram

Puzzle 4 White to move

White to move · orientation: white

Win the pinned piece.

Hint: The knight cannot run away. Which white pawn can take it now?

Correct move: 1. dxc6

The pawn captures the knight on c6. The bishop on b5 had pinned that knight to the king, so the knight could not escape beforehand.

Source/reference: Original teaching diagram

Puzzle 5 White to move

White to move · orientation: white

Win the piece that is pinned to the queen.

Hint: The knight is standing between your bishop and the black queen. Which pawn attacks the knight?

Correct move: 1. exf6

The e5-pawn captures the knight on f6. The bishop on g5 had made the knight a relative pinned piece in front of the queen on d8.

Source/reference: Original teaching diagram

Puzzle 6 White to move

White to move · orientation: white

Can White take the queen safely?

Hint: Check whether the f7-pawn is really allowed to move away from the bishop–king diagonal.

Correct move: 1. Nxg6!

Continuation: The f7-pawn cannot recapture on g6.

The bishop on c4 pins the f7-pawn to the king on g8. If the pawn moved to g6, the bishop would give check along c4–d5–e6–f7–g8, so that recapture is illegal.

Source/reference: Original teaching diagram

Puzzle 7 White to move

White to move · orientation: white

Win the pinned bishop.

Hint: The bishop sits in the middle of a rook–queen line. Which pawn can capture it?

Correct move: 1. cxd4

The c3-pawn takes the bishop. The bishop could have moved earlier, but doing so would have exposed the queen on h4 to the rook on a4.

Source/reference: Original teaching diagram

Puzzle 8 White to move

White to move · orientation: white

Use a second attacker to collect the pinned knight.

Hint: The knight cannot move away from the b5–e8 diagonal. Which rook can reach c6?

Correct move: 1. Rxc6

The rook captures the knight on c6. The bishop on b5 is the pinning piece, so the knight cannot escape by moving.

Source/reference: Original teaching diagram

Puzzle 9 White to move

White to move · orientation: white

Break the pin without moving the knight.

Hint: Move the king off the diagonal in one legal king-and-rook move.

Correct move: 1. O-O!

Castling moves the king from e1 to g1. Once the king leaves the b4–e1 diagonal, the knight on c3 is no longer absolutely pinned.

Source/reference: Original teaching diagram

Puzzle 10 Black to move

Black to move · orientation: black

Find the bishop move that pins White’s queen to the king.

Hint: Look at the diagonal b4–c3–d2–e1. Can a black bishop enter that line?

Correct move: 1... Bb4!

Continuation: Source continuation: 2. O-O Bxc3, and Black takes the queen.

The bishop moves from e7 to b4 and attacks the white queen on c3. The white king on e1 is behind the queen, so the queen cannot leave the b4–e1 pin line while the king remains on e1. In the source continuation, White castles and Black then captures the queen.

Source/reference: Exercise derived from ChessGo Easiest sample PDF, position 3

Sources and provenance

  1. ChessGo — Pin Puzzles — Pin Chess Puzzles
    https://www.chessgo.in/puzzles/pin
    Used for: Preferred puzzle source; the site describes pin-themed printable puzzle sheets and links a sample PDF.
  2. ChessGo — Easiest sample PDF — Pin Puzzles — Easiest difficulty sample PDF
    https://www.chessgo.in/pdf/Pin_puzzles_Easiest_difficulty_ChessGo.in.pdf
    Used for: Exercise 10 is redrawn from source position 3; the PDF coordinate line clearly begins ...e7-b4, e1-g1. The follow-up capture on c3 was checked against the published board and verified for legality.
  3. FIDE — Chess for Refugees Curriculum — Lesson Twenty: Simple Tactics
    https://www.fide.com/docs/presentations/Curriculum%20Chess%20for%20Refugees.pdf
    Used for: Worked Examples 5 and 6 are redrawn/adapted from the relative-pin Sveshnikov position after 7.Bg5 and the absolute-pin Nimzo-Indian position after 3...Bb4. The curriculum also suggests asking how to break a pin.
  4. ChessKid — Pin in Chess
    https://www.chesskid.com/learn/terms/pin-chess
    Used for: Concept wording adapted: a pinned piece sits in front of a more valuable target; absolute and relative pins are distinguished.
  5. ChessKid — The Piercing Pin
    https://www.chesskid.com/learn/articles/the-piercing-pin
    Used for: Concept adapted: bishops, rooks and queens create pins along diagonals, files or ranks; the lesson sequence moves from recognition to exploitation.
  6. Chess.com — Pin — Chess Terms
    https://www.chess.com/terms/pin-chess
    Used for: Cross-check for the standard definition and the distinction between a pin and a skewer.
Provenance note. Unless an item is explicitly marked as redrawn/adapted or derived from a source position, the chess diagram is original to this package. Source screenshots were not embedded.