# Number Guessing Game

> ⚠️ **Experimental — generated with no human supervision.** This realm was
> produced automatically by an MCP-driven agent to exercise the gno MCP server
> and tooling, and to generate test content for gno compilers, linters and
> formatters. **Not audited. Not for production.** Full context & folder README:
> [r/moul/x/daily](https://github.com/moul/gno-contracts/blob/main/r/moul/x/daily/README.md)

---


A gno.land realm (sapphire / gno 0.9) that hides a number between 1 and 100 and
lets anyone guess it. The target is derived **deterministically** from the block
height at which the round started (the GnoVM has no runtime RNG), so play is
reproducible and verifiable. Each guess returns `higher`, `lower`, or `correct`,
per-caller attempt counts are tracked, and solved rounds are recorded on a
leaderboard ranked by fewest guesses.

**Realm path:** `gno.land/r/REPLACE_ADDR/numguess`

## Playing

- `Guess(n int)` — submit a guess in `1..100`. Returns `"higher"`, `"lower"`, or
  `"correct"`; increments your attempt count for the current round. Panics if the
  round is already solved.
- `NewRound()` — once the current round is solved, starts a fresh round with a new
  target derived from the current block height. Panics if the round is still open.
- `Render(path)` — the gnoweb view: current round number, attempts so far, the last
  hint, round status, and the winners' leaderboard.

Both `Guess` and `NewRound` are gno 0.9 crossing functions (`cur realm` first
parameter), so callers invoke them with the crossing convention.

## Example calls

```sh
# Guess 42 (via gnokey; addr/keyname/chain flags omitted for brevity)
gnokey maketx call -pkgpath "gno.land/r/REPLACE_ADDR/numguess" \
  -func Guess -args 42 ...

# Start a new round after the current one is solved
gnokey maketx call -pkgpath "gno.land/r/REPLACE_ADDR/numguess" \
  -func NewRound ...
```

In a test or `MsgRun` ephemeral realm:

```go
import "gno.land/r/REPLACE_ADDR/numguess"

hint := numguess.Guess(cross(cur), 42) // "higher" | "lower" | "correct"
numguess.NewRound(cross(cur))          // after a solve
```

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---

Part of **[moul/gno-contracts](https://github.com/moul/gno-contracts)** — moul's versioned gno.land contracts. See the repository for the full catalog, build/test tooling, and usage.

**Dependency graph:**

![gno.land/r/moul/x/daily/numguess/v0 dependency graph](https://raw.githubusercontent.com/moul/gno-contracts/main/_assets/gno.land/r/moul/x/daily/numguess/v0/deps.png)

> 🧪 **Highly experimental — potentially vibe-coded.** Not audited; may break, change, or be removed at any time. Do not use with anything of value. Full disclaimer: [DISCLAIMER](https://github.com/moul/gno-contracts/blob/main/DISCLAIMER.md).

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