Game Dojos

About Game Dojos

Hands-on pattern games for recognizing algorithm moves under time pressure. Every published session is free to play without an account. Pro saves your results.

Recall Dojos for deliberate pattern practice

• Vim Dojo — Escape mazes with Vim motions
• Queens Court — Place queens, hit dead ends, backtrack
• Melody Machine — Unlock notes in dependency order
• Bisect — Halve the haystack until it sings
• Pincer — Squeeze the answer from both ends
• Window Shopper — Grow and shrink the perfect window
• Flood Gate — Ripple outward level by level
• Top of the Heap — Sift, pop, and keep the best on top
• Coin Forge — Build big answers from small ones
• Bridge Builder — Merge islands, spot the cycles
• Skyline Stack — Pop the short, push the tall
• Meeting Mania — Book the meeting that ends first
• Signal Runner — Settle the closest node first
• Canopy Walk — Walk the tree in the order it demands
• Merge Yard — Two sorted runs, one belt, never a wrong take
• Bracket Bay — Push, match, and call the break
• Chain Gang — Rewire the pointers without losing the tail
• Bucket Brigade — Hash once, walk the chain, never scan
• Range Sentinel — Answer range queries in log time
• Prefix Grove — One letter, one edge, one node
• Letter Press — Stamp the runs, mirror the ends
• Ledger Line — One running total answers every range
• Ballot Box — One counter finds the majority
• Spiral Patrol — Turn exactly where the law says turn
• Bit Smith — Clear the lowest bit, cancel the noise
• Digit Mill — Peel, carry, and rebuild the number
• Front Desk — Lowest free slot, never lose a guest
• Loom Works — Weave each square from the three behind it
• Span Hall — Raise every short arch before the wide one
• Mask Vault — Every subset is one integer
• Fault Line — Find the tunnel that is the only way in
• Turnstile — Remember only what the rule still needs
• Threshold Gate — Halve the answer, not the array
• Pivot Yard — Place one wagon, discard half the yard
• Horizon Sweep — Only the boundaries ever matter
• Glide Path — Keep only the ones that can still win
• Halfway House — Two halves you can afford, joined by a search
• Return Post — Call into every child, then resolve the node from what came back
• Tier Queue — Snapshot the queue, drain a level, close the row
• Three Colours — White descends, a stamped node is read from the vault, gray is still open
• Tally Rack — Count once, then spend or pour the rack
• Verge Finder — Flip, file the lit card, drop the half the lamp rules out
• Fork Finder — Fold the tree in postorder until two hits meet
• Odometer Roll — Fixed wheels, one menu each — emit at the end, carry when spent
• Splice Bench — Unlink it, hold it, link it back in — one pointer beat per key
• Mirror Swap — Swap the ends, close in, seal — reversal with no second array
• Fuse Line — Sort by start, then extend or emit — one key per bar
• Balance Beam — Two heaps, one boundary: the median and the next rank always at the roots
• Cut Table — Every cut that fits, priced by hand, and the best one sealed
• Reverse Polish — Push operands, pop two into their slots, push one result back
• Stair Descent — One compare retires a whole row or column
• Shorter Wall — Only the shorter wall moves — stamp the container or let the rain in
• Letter Trail — Mark, recurse four ways, restore — until the grid spells the word
• Delve Deep — Push on the way down, read the buffer at a target, pop on the way up
• Choice Ledger — One start-index walk, three record rules
• Root Nursery — Grow a tree back from its sequence, one hole at a time
• Valley Floor — Pop the taller, settle the rectangle
• Ripple Row — Bubble, insertion and selection, one comparison at a time
• Sack Sweep — One capacity row, swept the right way round for each item