Chess67 training lab

Jackhammer

Drill the pattern. Trust the move.

Build one tactics set, repeat it through timed cycles, and turn familiar positions into instant recognition.

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Your first batch is free

Jackhammer Trainer showing a puzzle board, cycle stats, timer, progress, skip, and pause controls
Same set. Faster cycle.

The method

Repetition makes the board feel slower.

01

Set the pattern

Build one fixed batch from Lichess themes and a rating range that fits your level.

02

Run the cycle

Solve the same positions against the clock without losing first-try accuracy.

03

Make it automatic

Repeat, review the misses, and watch recognition get faster from cycle to cycle.

A measurable loop

Stop collecting puzzles. Start learning them.

Jackhammer is a fixed-set tactics trainer. Each cycle removes novelty, so changes in speed, accuracy, and repeated misses show whether a motif is becoming automatic.

Built on

Lichess puzzle themesLichess puzzle dashboardThe Woodpecker Method by Axel Smith and Hans Tikkanen
  1. 01

    Pick a set

    Choose a fixed batch of tactics. Keeping the positions stable makes every later cycle comparable.

  2. 02

    Set a baseline

    The first cycle records your starting speed, accuracy, and the motifs that still make you pause.

  3. 03

    Repeat faster

    Run the same set again. Familiarity strips away search time and exposes true pattern recall.

  4. 04

    Review the misses

    Recurring misses become a focused study list instead of disappearing into an endless puzzle feed.

FAQ

Jackhammer questions

What is Jackhammer?

Jackhammer is a Chess67 Pro tactics trainer where you create one fixed set of chess puzzles, repeat the same set in timed cycles, and measure whether your speed and accuracy improve.

How does repeated-cycle chess training work?

Choose a puzzle set, solve every puzzle once, review misses, then repeat the same set in later cycles. The repetition makes recurring tactical patterns easier to recognize under time pressure.

Is Jackhammer based on the Woodpecker Method?

Jackhammer is inspired by the Woodpecker Method, popularized in the 2018 Quality Chess book by GM Axel Smith and GM Hans Tikkanen from a training system developed by Tikkanen. Chess67 is not affiliated with Quality Chess, Axel Smith, Hans Tikkanen, or the official Woodpecker Method book/course.

Can Jackhammer use my Lichess puzzle rating?

Yes. Connect Lichess to let Chess67 suggest puzzle rating ranges from your Lichess puzzle context, or choose a custom rating band manually.

Ready for another rep?

Make the next move feel familiar.

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