Training notebook · Tactics
Attraction sacrifices: prove the king must enter the mating square
An attraction sacrifice tries to bring the king or another defender onto a vulnerable square. Start with the desired destination and work backward, then test every legal way the opponent can avoid it.
A position to work through
Calculate a candidate continuation without moving the pieces. Look for the tactical idea, consider the opponent’s reply, then compare your calculation with the recorded line.
Black to move
Compare with the recorded continuation
Rxg1+ · Kxg1 · Rd1+ · Kg2 · Rxb1
This is a line from the training source, not a claim that every alternative has the same outcome. Calculate the opponent’s reply before revealing it.
Lichess CC0 puzzle database; position from Brass Pawn’s curated training data
Define the destination and the follow-up
Name the square you want the enemy king to occupy. Explain why it is worse than its current square: a mating net, a fork, an opened diagonal or blocked escape routes. Without a concrete follow-up, an offered piece is only an invitation to capture.
Do not conflate attraction with a chase. A series of checks may drive the king along a path, but each choice of destination must be calculated. The opponent selects the safest legal square, not the square that makes your final idea look best.
Calculate all responses to the offer
If the sacrifice is check, examine king moves, captures and interpositions permitted by the checking piece. If it is not check, include counterchecks, exchanges and immediate threats elsewhere. The attraction only works if the opponent cannot avoid the damaging destination without another concrete concession.
When more than one piece can capture, check each resulting position. A rook accepting on the target square may block an escape; a queen accepting may retain enough defensive reach. The identity of the capturing piece is part of the tactic.
Do the final mating audit independently
Once the desired position is reached, recalculate the mate from scratch. Check the king's captures and escape squares, the protection of your checking piece and any legal blocks. It is easy to become so attached to the sacrifice that you stop questioning the finish.
If the sacrifice yields an attack rather than forced mate, describe it that way. A training note should distinguish a verified forced sequence from a promising practical idea. That distinction helps avoid donating material in ordinary games where no puzzle setter guarantees a winning continuation.
Explain different accepting branches separately
Compare different reasons an offered piece might be untouchable. One capture may force a king onto a fatal square; another may open a line against a queen or leave a defender overloaded. Record the actual reason in each branch. A combination can mix attraction with other motifs without fitting one pure label. The label should guide search and explanation, not exclude defensive moves because they belong to another chapter. Accurate calculation is more valuable than deciding that the entire sequence must be classified under one name.
Name the forced destination and test refusals
Take four attraction exercises. Write the desired destination before the first move, then list two ways the defender might try to refuse it. Calculate those branches before the attractive accepting line.
After solving, write the exact reason the final square is fatal. Use a verbal feature such as blocked exits or a newly opened diagonal rather than merely saying 'mate follows'. Revisit one unsuccessful attraction attempt from your own completed games and look for the missing forced response.
Put the practice into a routine
Where Brass Pawn fits
Brass Pawn offers tactical positions and local engine analysis for checking attraction ideas. This study method asks you to justify the forced destination yourself; it does not claim a new sacrifice-generation feature or an assurance that speculative attacks are correct.