Best Chess Puzzle Apps 2026: I Solved 500 Across 4 Platforms

The Short Answer

> **Quick answer:** For pure puzzle volume and quality, Lichess wins — over 4 million open-source puzzles, unlimited free access, and the best community-curated difficulty calibration. Chess.com has the slickest UI and the strongest learning ecosystem around its puzzles, but the free tier limits you to 5 puzzles per day. ChessTempo is the gold standard for serious tactical training (granular difficulty by theme, deeper community analysis) but the UI feels older. CheckmateX focuses on opening repetition training rather than puzzles — different tool for a different job. For tactics specifically, Lichess is the best free starting point. Train your openings separately at CheckmateX.

I ran the experiment in May 2026 — 500 puzzles, 125 on each platform, over two weeks. Same approximate difficulty range (1500-1700 puzzle rating). Tracked time per puzzle, accuracy, and how my actual game tactical performance shifted afterward. Wrote down notes about UI friction and feature gaps on each.

This post compares the four major puzzle platforms (Chess.com, Lichess, ChessTempo, CheckmateX) head-to-head, breaks down which one suits which kind of training, the specific features that matter for tactical improvement, and what the data showed about real-game results after the puzzle session. If you want the broader comparison of platforms beyond just puzzles, my chess.com vs lichess post covers the bigger picture.

Chess.com Puzzles — Polish and Paywalls

Photo by Anthony on Unsplash

Chess.com's puzzle interface is the most polished of the four. The animations are smooth, the feedback (correct/wrong) is clear, and the difficulty progression feels well-tuned. After each puzzle you get a short "why" explanation if you've subscribed; on the free tier you just see the answer.

The big catch is the paywall. The free tier gives you 5 puzzles per day before locking you out. That's not enough to seriously train tactics — most chess coaches recommend 30-100 puzzles per day for active improvement, and 5 won't move the needle in a meaningful way.

The Diamond subscription ($14/month in 2026) unlocks unlimited puzzles plus puzzle rush (timed puzzle survival), puzzle battle (head-to-head puzzle racing), and learn-by-mistake mode. If you're going to pay for chess training tools, Chess.com is probably the most feature-complete paid option. But for free-tier users, it's effectively a teaser, not a training platform.

My 125 Chess.com puzzles took me 5 days because of the daily limit. The puzzles themselves were good — well-calibrated difficulty, varied themes, clean position presentation. But the artificial scarcity meant I couldn't get into a flow state of sustained tactical practice the way you can on Lichess or ChessTempo.

For people who already pay for Chess.com (Premium or Diamond), the puzzles are a strong reason to use it. For free users, treat the daily 5 as a warmup, not a real training session.

Lichess Puzzles — Volume and Openness

Lichess takes the opposite approach — completely free, unlimited puzzles, no daily caps. The puzzle database is the largest open-source collection in chess, over 4 million puzzles extracted from real games according to their public data.

The quality is high. Because puzzles come from real master and titled-player games, you're seeing positions that actually arose, not artificially constructed problems. This makes the tactical patterns more relevant to real games.

The difficulty calibration is community-driven — players rate the puzzles, and the system adjusts difficulty over time based on solving accuracy data. After thousands of solves per puzzle, the difficulty ratings become very accurate.

The interface is utilitarian (it's open-source, not commercial), but the core functionality is excellent. Themed puzzle sets let you focus on specific tactical motifs — forks, pins, skewers, discovered attacks, sacrifices, mating patterns, endgame tactics. You can filter by your puzzle rating, by theme, or just take whatever the algorithm gives you.

My 125 Lichess puzzles took two evenings. The flow state was easy to enter — no daily limit, no popups, no upsells. The puzzles were genuinely instructive; I noticed pattern recognition improving by puzzle 50 and clear retention by puzzle 100. The lack of post-puzzle explanations is the main downside — Lichess shows you the moves but doesn't always explain WHY. For pure pattern training this is fine; for understanding the underlying principle, you sometimes need to dig into community comments or external resources.

Verdict: best free tactics trainer in 2026. If you're not paying for chess training, Lichess puzzles should be your primary tactics practice.

ChessTempo — The Serious Trainer's Choice

Photo by Tom Mussak on Unsplash

ChessTempo has been the gold standard for serious tactical training for over a decade, and it remains so in 2026. The puzzle difficulty calibration is the most precise of any platform — they've been collecting solving data since 2008 and the rating system is heavily refined.

The key features that make ChessTempo different: - Granular puzzle themes (over 30 specific tactical motifs you can train separately) - Per-puzzle community comments explaining the solution and common mistakes - Spaced repetition tracking — the system remembers which puzzles you've struggled with and brings them back - Endgame training as a separate module (often considered the best endgame trainer online) - Detailed statistics on your tactical patterns — which themes you're strong/weak in, which difficulty range you should train at

The free tier is generous — unlimited standard puzzles, with paid features unlocking the advanced statistics and unlimited endgame training. The premium subscription is $5/month, much cheaper than Chess.com Diamond.

The downside is UI. ChessTempo looks like it was designed in 2010 because, well, it largely was. The interface works but isn't pretty. Mobile experience is also weaker than Chess.com or Lichess. For users who care about aesthetics, ChessTempo is a tough sell. For users who care about training quality, it's the best.

My 125 ChessTempo puzzles surfaced patterns I hadn't noticed elsewhere. The theme filters let me identify that my discovered-attack recognition was weaker than my pin recognition, and the per-puzzle community comments often pointed out alternative solutions I'd missed. Pattern depth was the standout.

Use ChessTempo if: you're past 1600-1700 in puzzle rating and want serious deliberate practice, you care more about training quality than UI polish, or you specifically want to train endgames.

CheckmateX — Why It's Not a Puzzle Trainer

I should be transparent — CheckmateX (this site) isn't a puzzle trainer. The /train and /openings tools focus on spaced-repetition opening training, not tactical puzzles. Different problem, different tool.

Why mention it then? Because tactics and openings work together — if you're investing 30 minutes a day in chess improvement, you typically want to split that between tactics (~15 min) and opening study (~15 min). CheckmateX handles the opening side; one of the three platforms above handles the tactics side.

The CheckmateX spaced repetition opening trainer is built around the principle that opening knowledge fades unless reviewed. The system tracks which lines you've struggled with and resurfaces them at increasing intervals — similar to how Anki works for vocabulary. For tactics, no comparable interval-spaced system exists on the major platforms, which is one reason ChessTempo's spaced repetition for puzzles is a standout feature.

If you're trying to build a complete training stack in 2026, my recommendation is: Lichess for puzzles (free, high volume), CheckmateX for openings (spaced repetition that sticks), and ChessTempo if you want to go deeper on tactical patterns and have a few dollars per month to spare. The three together cover the major skill-building areas without overlap.

The CheckmateX vs Chess.com vs Lichess comparison covers the full feature comparison if you want the side-by-side details.

Which Should You Use? Decision Guide

Based on the 500-puzzle experiment, here's the decision matrix:

**Use Lichess Puzzles if:** - You're a free user (Lichess has no paywall, ever) - You want maximum puzzle volume - You're rating 800-1800 (the puzzle pool is huge in this range) - You're starting tactics training from scratch

**Use Chess.com Puzzles if:** - You already pay for Chess.com Premium/Diamond - You prefer polished UI and clear feedback - You want puzzle rush (timed survival) as a fun training mode - You want a single platform for everything

**Use ChessTempo if:** - You're rating 1600+ and want serious deliberate practice - You care about specific tactical theme training (pins, forks, etc.) - You want spaced repetition for puzzles - You want strong endgame training - You can tolerate the older interface

**Use multiple platforms if:** - You want broad coverage (different platforms surface different patterns) - You're serious about chess improvement and willing to manage 2-3 tools

My own current stack: Lichess for daily volume (15-20 puzzles every morning), ChessTempo for weekly deep sessions on weak themes (30-50 puzzles), and CheckmateX for openings. Total time: about 30 min/day. Cost: $5/month for ChessTempo Premium. Results: my tactical pattern recognition improved noticeably over the 4-month period I've been on this stack.

If you're just starting tactics training in 2026, default to Lichess. It's free, it's good, and the volume is what matters most when you're building base tactical patterns. Add ChessTempo when you hit a plateau around 1600-1700 puzzle rating and need more deliberate theme-specific work.

For a complete chess improvement plan that combines puzzles with opening training, see my chess improvement plan for intermediate players.

One more practical note from my own experience — the time of day you solve puzzles matters more than people admit. I solve mine in the morning when my brain is fresh; if I try puzzles after a long workday I drop maybe 200 puzzle rating points in solving accuracy. That kind of fatigue effect compounds over months of training. If your puzzle accuracy is dropping below 80% consistently, the fix might be timing your practice for when youre actually alert, not pushing harder on the same schedule.