diff --git a/2023/day-02/game.js b/2023/day-02/game.js
new file mode 100644
index 0000000..37ea786
--- /dev/null
+++ b/2023/day-02/game.js
@@ -0,0 +1,96 @@
+const parseGame = (gameString) => {
+ const data = gameString.split(':')
+ const id = parseInt(
+ data[0].match(/\d+/)[0] // find the game number
+ )
+ const draws = data[1].split(';') // split the game into draws
+ .map((draw) => {
+ const result = ['red', 'green', 'blue']
+ .map((color) => { // extract count for each color
+ const reg = new RegExp(`\\d+(?= ${color})`)
+ console.debug(reg)
+ const val = draw.match(reg) || [0]
+ console.debug(`${color} ${val}`)
+ return parseInt(val).toString(16).padStart(2, '0') // convert to hex
+ })
+
+ return result.join('') // combine into a RGB hex color string
+ })
+
+ return {
+ id,
+ draws
+ }
+}
+
+const parseHex = (hex) => {
+ return {
+ r: parseInt(hex.substring(0, 2), 16),
+ g: parseInt(hex.substring(2, 4), 16),
+ b: parseInt(hex.substring(4, 6), 16)
+ }
+}
+
+const validateDraw = (draw, limit) => {
+ const data = parseHex(draw)
+ const lim = parseHex(limit)
+ return (data.r <= lim.r && data.g <= lim.g && data.b <= lim.b)
+}
+
+const validateGame = (game, limit) => {
+ // const lim = parseHex(limit)
+ // const tally = game.draws.reduce((acc, draw) => {
+ // const drawData = parseHex(draw)
+ // return {
+ // r: acc.r + drawData.r,
+ // g: acc.g + drawData.g,
+ // b: acc.b + drawData.b
+ // }
+ // }, { r: 0, g: 0, b: 0 })
+
+ // const result = (tally.r <= lim.r && tally.g <= lim.g && tally.b <= lim.b)
+ // console.debug(`Game ${game.id} ${(result) ? 'passes' : 'fails'}`)
+ // if (!result) {
+ // console.debug(tally)
+ // }
+
+ // If any draw fails, the full game fails
+ const result = game.draws.reduce((res, draw) => {
+ return (res && validateDraw(draw, limit))
+ }, true)
+ return result
+}
+
+const checksumGameSet = (games, limit) => {
+ // tally the IDs of valid games
+ return games.reduce((acc, game) => {
+ return validateGame(game, limit) ? acc + game.id : acc
+ }, 0)
+}
+
+const countCubesNeeded = (game) => {
+ const max = game.draws.reduce((acc, draw) => {
+ const drawData = parseHex(draw)
+ return {
+ r: Math.max(acc.r, drawData.r),
+ g: Math.max(acc.g, drawData.g),
+ b: Math.max(acc.b, drawData.b)
+ }
+ }, { r: 0, g: 0, b: 0 })
+
+ return max
+}
+
+const power = (game) => {
+ const needed = countCubesNeeded(game)
+ return needed.r * needed.g * needed.b
+}
+
+module.exports = {
+ parseGame,
+ validateGame,
+ checksumGameSet,
+ validateDraw,
+ countCubesNeeded,
+ power
+}
diff --git a/2023/day-02/game.test.js b/2023/day-02/game.test.js
new file mode 100644
index 0000000..f989d93
--- /dev/null
+++ b/2023/day-02/game.test.js
@@ -0,0 +1,228 @@
+/* eslint-env mocha */
+const { expect } = require('chai')
+const { parseGame, validateGame, checksumGameSet, validateDraw, countCubesNeeded, power } = require('./game')
+const { linesToArray } = require('../../2018/inputParser')
+const fs = require('fs')
+const path = require('path')
+const filePath = path.join(__dirname, 'input.txt')
+
+describe('--- Day 2: Cube Conundrum ---', () => {
+ describe('Part 1', () => {
+ describe('parseGame', () => {
+ it('extracts a game string into a data object with RGB hex values for draws', () => {
+ const data = [
+ 'Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green',
+ 'Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue',
+ 'Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red',
+ 'Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red',
+ 'Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green'
+ ]
+ const result = [
+ {
+ id: 1,
+ draws: [
+ '040003',
+ '010206',
+ '000200'
+ ]
+ }, {
+ id: 2,
+ draws: [
+ '000201',
+ '010304',
+ '000101'
+ ]
+ }, {
+ id: 3,
+ draws: [
+ '140806',
+ '040d05',
+ '010500'
+ ]
+ }, {
+ id: 4,
+ draws: [
+ '030106',
+ '060300',
+ '0e030f'
+ ]
+ }, {
+ id: 5,
+ draws: [
+ '060301',
+ '010202'
+ ]
+ }
+ ]
+
+ data.forEach((game, idx) => {
+ expect(parseGame(game)).to.deep.equal(result[idx])
+ })
+ })
+ })
+
+ describe('validateGame', () => {
+ it('checks if the game is valid given the limits', () => {
+ const limits = '0c0d0e' // 12 red cubes, 13 green cubes, and 14 blue cubes
+ const data = [
+ {
+ id: 1,
+ draws: [
+ '040003',
+ '010206',
+ '000200'
+ ]
+ }, {
+ id: 2,
+ draws: [
+ '000201',
+ '010304',
+ '000101'
+ ]
+ }, {
+ id: 3,
+ draws: [
+ '140806',
+ '040d05',
+ '010500'
+ ]
+ }, {
+ id: 4,
+ draws: [
+ '030106',
+ '060300',
+ '0e030f'
+ ]
+ }, {
+ id: 5,
+ draws: [
+ '060301',
+ '010202'
+ ]
+ }
+ ]
+ const result = [true, true, false, false, true]
+ data.forEach((game, idx) => {
+ expect(validateGame(game, limits)).to.equal(result[idx])
+ })
+ })
+ })
+
+ describe('checksumGameSet', () => {
+ it('tallies the IDs of valid games', () => {
+ const limits = '0c0d0e' // 12 red cubes, 13 green cubes, and 14 blue cubes
+ const data = [
+ {
+ id: 1,
+ draws: [
+ '040003',
+ '010206',
+ '000200'
+ ]
+ }, {
+ id: 2,
+ draws: [
+ '000201',
+ '010304',
+ '000101'
+ ]
+ }, {
+ id: 3,
+ draws: [
+ '140806',
+ '040d05',
+ '010500'
+ ]
+ }, {
+ id: 4,
+ draws: [
+ '030106',
+ '060300',
+ '0e030f'
+ ]
+ }, {
+ id: 5,
+ draws: [
+ '060301',
+ '010202'
+ ]
+ }
+ ]
+
+ expect(checksumGameSet(data, limits)).to.equal(8)
+ })
+ })
+
+ describe('validateDraw', () => {
+ it('validates an individual draw is within limits', () => {
+ const limit = '0c0d0e'
+ expect(validateDraw('010206', limit)).to.equal(true)
+ expect(validateDraw('060301', limit)).to.equal(true)
+ expect(validateDraw('040d05', limit)).to.equal(true)
+ expect(validateDraw('140806', limit)).to.equal(false) // game 3 draw 1 has 20 reds
+ expect(validateDraw('0e030f', limit)).to.equal(false) // game 4 draw 3 has 15 blues
+ })
+ })
+
+ describe.skip('integration test', () => {
+ let initData
+ before((done) => {
+ fs.readFile(filePath, { encoding: 'utf8' }, (err, rawData) => {
+ if (err) throw err
+ initData = linesToArray(rawData.trim()).map(parseGame)
+ // Deep copy to ensure we aren't mutating the original data
+ // data = JSON.parse(JSON.stringify(initData))
+ done()
+ })
+ })
+
+ it('result matches what we know about the answer', () => {
+ const limit = [12, 13, 14] // 12 red, 13 green, 14 blue
+ .map((num) => num.toString(16).padStart(2, '0'))
+ .join('')
+
+ expect(checksumGameSet(initData, limit)).to.be.gt(177) // 177 is too low
+ expect(checksumGameSet(initData, limit)).to.be.gt(1452) // 1452 (from creating the limit in hex wrong, and assuming cubes are not returned to the bag after each draw) is too low
+ })
+ })
+ })
+
+ describe('Part 2', () => {
+ describe('countCubesNeeded', () => {
+ it('counts how many cubes are needed for a game', () => {
+ const data = [
+ 'Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green',
+ 'Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue',
+ 'Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red',
+ 'Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red',
+ 'Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green'
+ ]
+ const result = [
+ { r: 4, g: 2, b: 6 },
+ { r: 1, g: 3, b: 4 },
+ { r: 20, g: 13, b: 6 },
+ { r: 14, g: 3, b: 15 },
+ { r: 6, g: 3, b: 2 }
+ ]
+ data.forEach((game, idx) => {
+ expect(countCubesNeeded(parseGame(game))).to.deep.equal(result[idx])
+ })
+ })
+ })
+ describe('power', () => {
+ it('calculates the power for a game', () => {
+ const data = [
+ 'Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green',
+ 'Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue',
+ 'Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red',
+ 'Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red',
+ 'Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green'
+ ]
+ const result = [48, 12, 1560, 630, 36]
+ data.forEach((game, idx) => {
+ expect(power(parseGame(game))).to.equal(result[idx])
+ })
+ })
+ })
+ })
+})
diff --git a/2023/day-02/index.js b/2023/day-02/index.js
new file mode 100644
index 0000000..af7e035
--- /dev/null
+++ b/2023/day-02/index.js
@@ -0,0 +1,3 @@
+// eslint-disable-next-line no-unused-vars
+const console = require('../helpers')
+require('./solution')
diff --git a/2023/day-02/input.txt b/2023/day-02/input.txt
new file mode 100644
index 0000000..e25a721
--- /dev/null
+++ b/2023/day-02/input.txt
@@ -0,0 +1,100 @@
+Game 1: 13 red, 18 green; 5 green, 3 red, 5 blue; 5 green, 9 red, 6 blue; 3 blue, 3 green
+Game 2: 2 green, 3 blue, 5 red; 9 green, 4 red, 2 blue; 4 green, 3 blue; 2 blue, 3 red; 5 red, 3 blue, 9 green; 9 green, 5 red, 2 blue
+Game 3: 12 green, 3 red, 3 blue; 2 blue, 5 green, 2 red; 2 red, 3 blue, 11 green; 2 red, 8 green, 7 blue
+Game 4: 1 green, 2 blue; 7 green, 13 red; 2 blue, 5 green, 7 red; 6 green, 2 red
+Game 5: 6 blue, 4 green; 8 blue, 7 green; 1 red, 10 blue
+Game 6: 4 red, 4 blue, 2 green; 8 green, 1 blue, 8 red; 9 green, 1 red, 3 blue
+Game 7: 3 red, 12 green, 4 blue; 1 blue, 3 red, 6 green; 4 blue, 3 red, 15 green; 11 green, 2 blue, 2 red
+Game 8: 13 blue, 7 green, 8 red; 5 green, 8 blue, 2 red; 5 red, 6 blue, 7 green; 6 green, 6 red, 3 blue; 7 blue, 8 red, 6 green
+Game 9: 4 blue, 1 green, 4 red; 16 red, 1 green, 7 blue; 11 red, 3 green, 7 blue
+Game 10: 5 green, 1 red; 5 green, 3 blue; 1 red, 7 green, 3 blue; 1 blue, 6 green; 2 green, 4 blue
+Game 11: 10 green, 2 blue, 2 red; 14 green, 1 blue, 3 red; 13 green; 3 green, 2 red; 3 red, 1 blue, 2 green; 1 red, 10 green, 2 blue
+Game 12: 9 green, 2 blue; 11 green, 1 blue; 2 red, 1 blue; 1 blue, 2 red, 3 green; 1 blue, 2 red, 3 green
+Game 13: 11 blue, 3 red, 8 green; 9 red, 7 blue; 7 blue, 4 red
+Game 14: 17 blue, 2 red; 1 green, 13 blue, 1 red; 4 blue, 1 red, 4 green; 2 blue, 5 red, 13 green; 3 blue, 4 green, 6 red; 9 green, 14 blue, 6 red
+Game 15: 7 green, 2 blue, 3 red; 4 red, 18 green; 8 green, 1 blue; 3 red, 15 green, 2 blue; 1 red, 15 green; 9 green, 3 red, 1 blue
+Game 16: 10 red, 19 blue, 5 green; 12 red, 5 blue; 6 red, 3 green, 14 blue; 8 red, 10 blue, 6 green; 7 green, 10 red, 17 blue
+Game 17: 3 green, 3 red, 1 blue; 3 blue, 1 green, 2 red; 4 green, 3 red, 2 blue
+Game 18: 1 red, 2 blue; 1 green, 4 blue; 1 blue; 5 blue; 1 green, 3 red, 6 blue
+Game 19: 3 blue, 5 red, 8 green; 10 red, 6 blue, 11 green; 5 blue, 7 red, 8 green; 9 blue, 6 green, 5 red; 8 red, 12 green, 8 blue; 1 blue, 5 green, 10 red
+Game 20: 16 blue, 2 green; 10 green, 1 red, 4 blue; 13 green, 5 red, 9 blue
+Game 21: 1 blue, 1 green, 14 red; 2 blue; 5 green, 1 blue; 2 green, 11 red; 2 red, 4 green; 2 green, 16 red
+Game 22: 1 green, 10 red, 4 blue; 1 green, 4 blue, 8 red; 2 blue, 8 red; 4 green, 14 red; 1 blue, 5 red, 2 green
+Game 23: 17 green, 3 red, 16 blue; 9 green, 15 red; 3 red, 8 blue, 15 green
+Game 24: 1 green, 1 blue; 2 blue, 1 green, 2 red; 3 green, 1 blue, 1 red; 3 blue, 1 red; 2 green, 5 blue
+Game 25: 11 red, 2 green; 7 red, 6 green; 10 red, 1 blue, 8 green; 8 green, 4 red; 6 green, 10 red; 2 blue, 7 red
+Game 26: 2 green, 2 blue, 8 red; 1 blue, 1 red, 6 green; 9 red, 6 green, 2 blue
+Game 27: 5 red, 7 blue, 3 green; 3 blue, 1 red; 1 green, 1 red, 9 blue
+Game 28: 17 red, 5 green, 10 blue; 3 red, 14 blue, 1 green; 11 blue, 11 green
+Game 29: 16 red, 4 green, 4 blue; 3 green, 5 blue, 11 red; 7 blue, 8 red, 1 green; 1 green, 10 red, 4 blue; 2 green, 4 blue, 8 red
+Game 30: 3 green, 6 blue; 18 green, 3 blue; 14 green, 11 blue; 7 blue, 2 red, 17 green; 1 red, 12 green, 7 blue
+Game 31: 11 red, 2 green, 3 blue; 10 green, 11 blue, 15 red; 12 green, 17 blue, 5 red; 5 green, 2 red, 12 blue; 13 blue, 13 green, 4 red
+Game 32: 4 red, 2 blue, 5 green; 7 blue, 15 red; 11 blue, 4 green, 8 red
+Game 33: 18 blue, 3 green, 3 red; 3 green, 6 red; 2 blue, 4 red, 1 green; 3 green, 5 red, 3 blue
+Game 34: 5 red, 2 blue, 16 green; 9 red, 10 blue, 3 green; 8 red, 10 green, 13 blue
+Game 35: 7 blue, 5 red; 3 red, 1 blue; 4 blue, 7 red, 1 green; 4 red, 4 blue, 1 green; 3 blue, 7 red; 4 red, 1 green, 3 blue
+Game 36: 14 blue; 10 blue, 1 green; 10 blue, 4 green; 4 blue, 1 green, 1 red; 1 red, 6 blue, 4 green; 1 green, 1 red, 11 blue
+Game 37: 8 red, 13 green, 5 blue; 11 red, 16 green, 8 blue; 2 green, 10 blue, 11 red
+Game 38: 2 red, 1 blue, 10 green; 7 red, 6 blue, 14 green; 18 red, 1 blue, 5 green; 5 green, 5 blue, 13 red; 14 red, 5 green; 15 green, 13 red, 2 blue
+Game 39: 1 blue, 5 red; 9 red, 9 green; 4 blue, 10 green, 4 red; 3 green, 11 red, 1 blue; 2 green, 11 red, 4 blue
+Game 40: 9 blue, 4 green; 12 green, 1 red; 2 red, 15 green, 10 blue
+Game 41: 1 blue, 14 red, 12 green; 16 green, 2 blue, 3 red; 6 green, 9 red
+Game 42: 4 green, 13 red, 9 blue; 9 green, 9 red, 4 blue; 7 blue, 10 red, 9 green; 4 green, 18 blue, 14 red; 9 blue, 7 green, 2 red
+Game 43: 7 red, 6 blue; 4 green; 3 red, 6 green; 7 blue, 6 green, 8 red; 9 green, 7 blue, 7 red; 5 blue, 5 green, 6 red
+Game 44: 5 red, 8 blue; 2 red, 5 green; 6 green, 11 blue, 2 red; 1 green, 1 blue, 2 red
+Game 45: 3 blue, 7 green, 1 red; 5 red, 1 blue; 2 blue, 3 red; 8 green, 5 red
+Game 46: 4 red, 4 blue, 17 green; 1 blue, 5 green, 1 red; 1 red, 1 blue, 7 green; 18 green, 7 blue
+Game 47: 14 red, 3 green, 2 blue; 4 green, 4 red, 2 blue; 13 red, 1 blue
+Game 48: 5 red, 12 blue, 2 green; 3 blue, 1 red, 2 green; 10 blue, 7 red
+Game 49: 6 blue, 11 red; 11 red, 17 blue, 11 green; 16 blue, 12 green, 6 red
+Game 50: 12 blue, 3 green, 1 red; 3 green, 10 blue, 3 red; 11 blue, 3 red
+Game 51: 12 green, 1 blue, 8 red; 6 blue, 1 green, 9 red; 17 red, 5 blue; 7 blue, 9 green, 9 red; 13 green, 10 red, 2 blue
+Game 52: 5 blue, 1 green; 1 red, 1 green, 3 blue; 8 blue, 1 green; 1 green, 7 blue; 3 blue; 1 red, 6 blue
+Game 53: 11 green, 5 red; 16 green, 6 blue; 4 red, 19 green, 4 blue
+Game 54: 6 green, 4 blue, 8 red; 7 red, 6 green, 5 blue; 5 blue, 4 red; 5 blue, 14 red
+Game 55: 11 blue, 1 green; 2 red, 5 blue, 1 green; 10 blue, 1 green; 11 blue; 2 green, 2 red, 5 blue
+Game 56: 1 red, 9 blue, 1 green; 2 red, 8 blue; 1 green, 9 blue, 10 red; 5 blue, 1 green; 15 blue, 1 red; 12 blue, 4 red
+Game 57: 1 green, 17 blue; 10 blue, 2 green; 2 red, 16 blue; 6 green, 15 blue; 5 green; 2 red, 1 green
+Game 58: 2 blue, 4 green, 2 red; 5 blue; 5 red, 3 green, 2 blue; 5 red, 2 green, 5 blue; 7 green, 3 red, 4 blue; 4 red
+Game 59: 8 blue, 2 red, 2 green; 15 blue, 1 green, 4 red; 9 blue, 1 red; 3 green, 5 red, 5 blue
+Game 60: 3 red, 2 blue, 6 green; 1 red, 5 green; 2 blue, 10 green; 6 green, 2 red
+Game 61: 6 green, 4 blue; 1 red, 4 blue, 15 green; 1 blue, 16 green, 3 red; 6 red, 12 green, 2 blue; 3 red, 14 green, 1 blue; 3 red, 2 blue, 9 green
+Game 62: 1 green, 2 red; 4 red; 1 green, 4 red, 1 blue; 1 red, 1 blue, 1 green
+Game 63: 8 green, 4 red, 4 blue; 5 red, 4 blue, 8 green; 3 green, 1 blue
+Game 64: 5 blue, 2 green, 5 red; 3 green, 2 blue, 1 red; 6 blue, 2 red, 1 green; 2 green, 2 blue, 3 red; 3 blue, 1 red
+Game 65: 2 red, 7 green, 5 blue; 8 blue, 3 green, 4 red; 1 red, 6 green, 1 blue
+Game 66: 1 green, 6 red; 5 red, 1 green, 1 blue; 4 red, 1 blue, 1 green; 1 blue, 2 red, 1 green; 1 blue, 5 red; 1 blue, 8 red
+Game 67: 6 red, 8 blue, 8 green; 5 green, 2 red, 10 blue; 4 red, 1 green; 7 blue, 2 green
+Game 68: 7 green, 9 red, 15 blue; 4 green, 6 red, 3 blue; 1 blue, 5 green, 4 red; 9 green, 14 red, 6 blue; 8 blue, 15 red, 4 green; 7 green, 14 blue, 6 red
+Game 69: 4 green; 2 blue; 4 green, 8 blue, 11 red; 3 green, 9 red, 4 blue; 1 red, 2 blue; 2 green, 5 blue, 11 red
+Game 70: 6 blue, 16 green, 4 red; 6 green, 13 red, 2 blue; 7 green, 1 red, 2 blue; 8 green, 4 blue, 1 red; 10 red, 11 green
+Game 71: 6 blue, 7 red; 10 blue, 2 green, 4 red; 12 red, 10 blue, 1 green
+Game 72: 13 red, 13 blue; 6 red, 10 blue, 7 green; 3 blue, 5 green, 4 red; 8 green, 9 blue
+Game 73: 1 red, 1 green, 8 blue; 1 green, 8 blue; 2 green, 6 blue; 2 blue; 1 red, 12 blue; 12 blue, 3 green
+Game 74: 2 blue, 1 green, 1 red; 3 blue, 1 red, 1 green; 3 blue, 2 red; 3 blue, 1 red; 1 green
+Game 75: 10 red, 1 green, 4 blue; 12 red, 11 blue, 9 green; 18 green, 14 red, 5 blue
+Game 76: 4 blue, 3 green, 11 red; 4 blue, 1 green, 12 red; 11 blue, 2 green, 4 red; 2 blue, 2 green, 11 red; 12 red, 1 blue; 4 red, 2 green, 15 blue
+Game 77: 2 red, 10 blue, 6 green; 6 blue, 2 red, 8 green; 1 red, 9 green, 7 blue
+Game 78: 3 green, 10 red; 2 blue, 4 red, 3 green; 8 red, 3 blue, 4 green; 1 blue, 7 red
+Game 79: 4 green, 2 red; 2 red, 14 green; 1 blue, 5 green, 8 red; 4 red, 20 green; 3 green, 1 blue, 8 red; 4 green, 1 blue
+Game 80: 2 green; 3 green, 13 red, 10 blue; 6 blue, 10 red, 1 green; 10 green, 12 red, 3 blue; 10 blue, 17 red, 5 green; 8 red, 2 blue, 6 green
+Game 81: 4 green, 2 blue, 4 red; 16 red, 1 blue, 20 green; 7 blue, 10 red, 9 green; 7 blue, 2 green, 14 red
+Game 82: 4 blue, 8 green, 5 red; 14 red, 8 blue, 1 green; 11 red, 13 green
+Game 83: 2 blue, 2 green, 10 red; 10 green, 4 red, 3 blue; 11 green, 14 red, 4 blue; 2 blue, 11 red; 3 blue, 1 green, 4 red
+Game 84: 12 blue, 9 green, 10 red; 1 red, 6 green, 4 blue; 7 red, 3 green, 16 blue; 3 green, 3 blue
+Game 85: 2 red, 4 blue; 4 blue, 1 green, 6 red; 9 blue, 1 red; 1 green, 4 blue, 10 red; 5 green, 7 red, 17 blue
+Game 86: 2 red, 3 blue, 1 green; 2 blue, 2 red, 2 green; 10 blue, 2 green; 5 green, 4 red, 6 blue
+Game 87: 1 red, 7 blue, 9 green; 3 green, 2 blue; 1 red, 4 blue, 10 green; 10 green, 7 blue, 1 red; 6 blue, 9 green; 9 blue, 7 green, 1 red
+Game 88: 1 blue, 14 red, 9 green; 4 green, 9 red; 8 green, 1 blue, 10 red
+Game 89: 13 red, 1 green; 2 blue, 10 red; 1 green, 3 blue, 13 red; 1 green, 14 red, 3 blue; 2 green, 6 red; 1 green, 12 red
+Game 90: 1 red, 2 blue, 9 green; 1 blue, 3 red, 2 green; 10 green, 9 red; 1 red, 9 green, 4 blue; 3 blue, 13 green, 13 red
+Game 91: 2 red, 8 green, 8 blue; 3 green, 2 red, 6 blue; 5 green, 4 red
+Game 92: 8 green, 12 blue, 4 red; 7 red, 4 green; 4 blue, 7 green, 7 red; 7 blue, 5 green
+Game 93: 1 green, 1 red, 2 blue; 3 green, 1 red, 3 blue; 1 red, 8 blue; 1 green, 13 blue; 1 red, 4 blue, 4 green
+Game 94: 2 blue, 7 red, 17 green; 2 green, 1 blue, 5 red; 3 blue, 7 green, 1 red; 6 red, 1 blue, 1 green; 1 green, 1 blue, 1 red
+Game 95: 4 blue, 3 green, 4 red; 17 red, 2 blue; 6 blue, 16 green, 15 red; 7 blue, 17 green; 1 red, 3 green, 3 blue; 7 red, 14 green, 4 blue
+Game 96: 6 red, 3 blue; 7 green, 5 blue, 10 red; 9 green, 1 blue; 6 blue, 1 red, 12 green; 3 blue, 10 green
+Game 97: 3 green, 1 red, 13 blue; 1 red, 8 green, 2 blue; 1 green, 2 blue, 2 red; 1 red, 4 green, 9 blue
+Game 98: 1 green, 8 red, 7 blue; 8 blue, 8 red, 3 green; 1 blue, 2 red; 4 red, 7 blue; 3 green, 3 blue, 3 red
+Game 99: 9 blue, 14 red; 3 blue, 10 red, 5 green; 3 blue, 3 green, 6 red
+Game 100: 12 blue, 2 green; 2 green, 4 red, 13 blue; 9 blue, 1 red, 2 green; 2 green, 3 red, 1 blue
\ No newline at end of file
diff --git a/2023/day-02/solution.js b/2023/day-02/solution.js
new file mode 100644
index 0000000..01a6c04
--- /dev/null
+++ b/2023/day-02/solution.js
@@ -0,0 +1,44 @@
+const fs = require('fs')
+const path = require('path')
+const filePath = path.join(__dirname, 'input.txt')
+const { linesToArray } = require('../../2018/inputParser')
+const { parseGame, checksumGameSet, power } = require('./game')
+
+fs.readFile(filePath, { encoding: 'utf8' }, (err, initData) => {
+ if (err) throw err
+
+ initData = linesToArray(initData.trim())
+
+ const resetInput = () => {
+ // Deep copy to ensure we aren't mutating the original data
+ return JSON.parse(JSON.stringify(initData))
+ }
+
+ const part1 = () => {
+ const data = resetInput()
+ .map(parseGame)
+ const limit = [12, 13, 14] // 12 red, 13 green, 14 blue
+ .map((num) => num.toString(16).padStart(2, '0'))
+ .join('')
+ console.debug(`limit is ${limit}`)
+
+ return checksumGameSet(data, limit)
+ }
+
+ const part2 = () => {
+ const data = resetInput()
+ .map(parseGame)
+
+ return data.reduce((acc, game) => {
+ return acc + power(game)
+ }, 0)
+ }
+ const answers = []
+ answers.push(part1())
+ answers.push(part2())
+
+ answers.forEach((ans, idx) => {
+ console.info(`-- Part ${idx + 1} --`)
+ console.info(`Answer: ${ans}`)
+ })
+})
diff --git a/index.js b/index.js
index a1611a7..557add4 100644
--- a/index.js
+++ b/index.js
@@ -1 +1 @@
-require('./2023/day-01/solution')
+require('./2023/day-02/solution')
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