data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAKAAAAB4CAYAAAB1ovlvAAAAAXNSR0IArs4c6QAADg9JREFUeF7tnA1MldcZx/+XC1y+QUQQkU9FxC9EB0qwiqyrZaTazdaWfli1M110bbpknVlitmxp1nTLsjZLuy7dotKqrdk6u7ZUqtS6MEQUREVAPkVBoHwjXxcu3uU55n3hFpTbFDxXzvMk5HLf+77nOed/fvd5z3nOea/BarVawcYKSFLAwABKUp7dCgUYQAZBqgIMoFT52TkDyAxIVcAGwIGBATQ0NGB4eHhSKmUwGEBzHHq9m5lMJoSFhU2KTy7k/lJABzAvLw9eXl7w8/OT0oL6+nqEhoaKPzZ1FBAAlpeXg6IQRao333wTe/bsAUXDO9nbb7+NXbt2TbpKFH2Tk5MnvVwu0HEVEACWlZXBzc1N1JIAjIuLQ3Nzs3jNysrCpUuXsHr1amRkZIBgvXDhAnbu3DklrXJyckJ4ePiUlM2FOp4CAsDKykpQx5OdOXMGs2bNErfjW7duoa2tDT4+PrBYLIiJiQHBSuO6+fPnT0lrND9TUjgX6nAKCAArKip0AGXXkABcuHCh7Gqw/3ukgADwypUrOoA97c1oOPpH3OrtQL/RC1c9YzFscLarOtqangEGWGEFvY5nwQO1mGluFB8tTP8JDFFJ+mk0A2cA7ZJ7WpykT0K0VMn5j99FetsRnI9+Hr4rH4Gf/0wxPnQzmWDPonF7WxuMzncGdnBwUExwOkq+wuKLf4F36k9RG5aui0m3/djY2GkhLjdiYgX0SYgGYPHHf8fC3mL4bn9Xv7ruq//A/N6vYXK6ez6PLoje9RoawxLE+JHM1dUVvr6+4n+Cr7+/H2azGVevXkXIzVIkhvuiJvSHui8aXzKAE3fcdDlDAFhaWiraQxASgEmBFlSHb4Szs7PIy7UfPwifz/5s0+aQ3/4TDb95bIwOMzP2oGZ+Kvz9/cVn3d3dOoA1NTXo6urC0qVLkZmZKWbWD5kqUD03TU9YE4CLFi2aLvpyOyZQQAB4+fJl/bSLn/wDKZGe6F35nJj5EoSdOYdtADRFLIZf+k40v/XyuABWz1sPmthER0fDxcVFzKLJamtrRaLbw8MDhw4dwqpVq/CwexUq52zQy6EvAQOoDrcCwJKSkjEA9qzYKpLTdLvsPvkBfD57w0YVz8SH0VtwbFwAq6JSMHfuXBFRGxsb4e3trQNIQFOKh1I/dDzNoxoVwQ/ZALh48WJ1ekDxluoAamO2S5/uQ0qkB27GP6tLM1D8JTwO7bVLKp8dv8fV2cv1WTXlFwk4Mhr3URTUbPbs2Uj3qkV50IP6MaPRCAbQLqmnxUkCQFrp0AAs+ew2gF1xz4w0cNiC6lOfwsl6e2JxRzM4ITJlIwYtFjHZIKMopyW5CUD60ywoKAiP+NShLPD7+jGKkAzgtGDLrkYIAC9evKjvgLmctV8A2BK7BefOnUNSUhLaTn2EoGNvYIJNLcKh/xOvoDJyHQgustbWVnh6euoR8JsAbvK7jssB6/XK0phxyZIldlWeT7r/FRAA0tqutgXrctYBpES6o9gnGdXV1di8eTOas/bZjAHdFibA98Gn0XH0LQzWV9qoQLPg8rA1oNsrWUtLyx0BDAwMxI/8G1AyM0Uvg9I2DOD9D5a9LRAAFhcXjwHwuHmBgIj26Znz/m0DoEtQGAJf+AMafvfkGD8EYFloMpqamrBgwQL09vaKWS8ZRb+6ujr9Glpz3hzQiEv+62wApDQNmxoKCADPnz8vUi5kZccysS7CHTfjt4r8HQHUc+qIDYDuS5LhsXQNur88jKHma2MiIAEYHBwsjtOuGnd3d/E/wUcQahtVKQI+NqsJF/we0MugVRcGUA34qJUCwKKiolEAvod1EW5oWzwS3Qz1ZQjva7BLlf45sag3BYoUDhmtftDEQgPwmxFwS9DXKPZdYwPgsmXL7PLFJ93/CggACwsLvwGgO1oXbdFbZ+hsRvmB12G1DE7QYgMSnv4ZOgLm6bm/np4eUGqF7MaNG2JcqVlAQACeDG7FeZ+RTagULRnA+x8se1ugA0iRiuzKF+9jbbg7Tg7HivxdREQEDOez4Zc1kog2+gXCL2072g6/PsYPjQFL5qwWiWgNOppYaEYpH1qOi4yMFMt0T4W0o9BrZDcMjRdpIyybGgoIACndMgLgQawNd0P7kieRnZ2NjRs3YjDvKHxGAUjSzPlVJm68tnVcAC8Fr9Kf7aBnPeh2rD2cNPqVNrc+E9qJc56r9XIoZcMAqgGfPgY8e/asWHIjqzh+SABY5LUadHz37t1oPZZpA6A2C/76b78cdxJycXaieLqOEsoU7UZHwNHS0iaIreHdKHBP1A9T1F2+fLk6PaB4S0UELCgo0AGsPHEID4S5oTlmsy6NOfdfCM07YJdUM554BRQBtec6rl27JjYkaPbiiy+C0j7bt28Xu2G2RfbgjFuC/jmtnDCAdkk9LU4SANJzIFoE1ABsWvBjkUQmIAJnzYL15Hu4Zb69vHYnM7i4wviDHejo6NCX9rQZ8OhrPv/8czz++OMg8HfM60O+6Xs2AMbHx08LcbkREysgAMzPz9cfw6zK+QBrw034pCsMiYmJ4ik42hOoPTVHe/qioqLGLbm9vV3fB0gn0ISDcn3aspx2EUFNS3RU1vPz+5HnskIvj3KPDODEHTddzhAAnj59Wgew+ssP8ECYCa2LnsCrr76Kbdu2obOzU+ztIztx4oRYKqNJS05ODh599FEBEu3/oxkzjftoBYUmHgQvRdcdO3YI4MhobyD9TxsUaEvWzgVm/M95JOLRfkEGcLrgNXE7BID0qwjag+gE4HxjC5Dykoh6tDn0ww8/FFGPVjAIQNoyHxISAkpgEywEGd1qCa4NGzaI54YpytEsl3bZpKamihUR+pwe8yT46HhVVRVeWDiEXOPIpIMAXLFiJCJO3AQ+435WQACYm5urA1hz8giSzfnICnpW5AFpKW50WoTSKAQm3VpprEcTDDpG48U5c+aIhDZtbKDkM31Oa8k0EdHgG/17Maa8v2LN2hT81zCy8kHrw5yGuZ+R+nZ1FwDSpECbLNR+dQQZlmxUW/xxKXwLWodvr+NOtsW1nUTiUDFcH3wZp3B78wGlbNLS0vTdM5Ptk8tzPAX0Hyc6cOCAGLtZzT1IdbfdYDCV1e6aEYOiNqOIorQysmXLyBLgVPrlsh1DAZufZzt+/Li4ZWprt/eqipQC6uvrQ0LCSD7wXvlmP3IV4B+olKu/8t4ZQOURkCsAAyhXf+W9M4DKIyBXAAZQrv7Ke2cAlUdArgAMoFz9lffOACqPgFwBGEC5+ivvnQFUHgG5AjCAcvVX3jsDqDwCcgVgAOXqr7x3BlB5BOQKwADK1V957wyg8gjIFYABlKu/8t4ZQOURkCsAAyhXf+W9M4DKIyBXAAZQrv7Ke2cAlUdArgAMoFz9lffOACqPgFwBGEC5+ivvnQFUHgG5AjCAcvVX3jsDqDwCcgVgAOXqr7x3BlB5BOQKwADK1V957wyg8gjIFYABlKu/8t4ZQOURkCsAAyhXf+W9M4DKIyBXAAZQrv7Ke2cAlUdArgAMoFz9lffOACqPgFwBGEC5+ivvnQFUHgG5AjCAcvVX3jsDqDwCcgVgAOXqr7x3BlB5BOQKwADK1V957wyg8gjIFYABlKu/8t4ZQOURkCsAAyhXf+W9M4DKIyBXAAZQrv7Ke2cAlUdArgAMoFz9lffOACqPgFwBGEC5+ivvnQFUHgG5AjCAcvVX3jsDqDwCcgVgAOXqr7x3BlB5BOQKMC6AZWVl6OzslFuzSfbu7u6O5cuXT3KpXNx3VWAMgCdOnEBkZOR3LXfKr+9ruQ73hrNwdjLc1dfgQD/ckp/D0NAQ6urqkJqaOuV1Ywf2K2ADYF5eHvz8/PSr9+/fj23btunvDQYDrFbrt3rf2toKk8kkrrl58yaCg4Ptvr6xsREzZsyAm5ubuGa0f+vZQwgvzdTLcpobB2tbLVxWP4vBk2/ZKND/i0K0tLSI681mM0dC+/mY8jNtACwuLtYdHj58GJ6enli/fr2IHP39/YiKisL169fh7e0tQAwKCsKNGzfQ09ODmJgYVFdXw2KxwMPDA4ODg/Dy8oKLiwsIQoo8VVVV6OrqgrOzswCCIi2dV19fL0CbN28eCgoKYDQaddCpLPI1MDAgAKJyqAzThSMILX1fr6/HK6cw+MWfYJyXhFtN5RjKO6B/1vPzAjQ1NYn3VFZ8fPyUC8sO7FPABsDCwkIMDw+LK4uKilBTUyPAi4uLA30WGhqKyspKVFRUID09Xfzt2rULiYmJAgw6fu3aNURHRwsYGxoasHLlSgFUSkoK9u3bh7S0NOTk5GDTpk2ora0VAMbGxiI7OxsRERHIzc0V5VIkPnfuHEJCQpCZmSkAXLZsGfbu3SvK9S47agOgy/rduNVQApdVT8FyORuWoo90BbpeOi2u0aJoQkKCferwWVOugA2ABIZ2uyTPBFx3d7eIaO+8846AjSKcq6uriEIUkcgoypWWliIgIEBEMnpPYy6KgBQdyShqUll0rLe3VxxzcnJCR0cHfH19RWSiV/pM+xLQOT4+PuI6etV80uvM6iwbAO+mVPvuXPHFIKMvQ1JS0pQLyw7sU2DMJOTgwYM24zT7irn3Z/kNtmCxsQEG3H0S0mceQnnAWvT19aG5uRkZGRn3vrLs8Y4KjJuGyc/PF2O06WQUeWk8y+ZYCnAi2rH6Q7naMIDKdbljNZgBdKz+UK42DKByXe5YDWYAHas/lKsNA6hclztWgxlAx+oP5WrDACrX5Y7VYAbQsfpDudowgMp1uWM1mAF0rP5QrjYMoHJd7lgNZgAdqz+Uq83/AZXRsPPoAV/qAAAAAElFTkSuQmCC110i121I'm kind of bummed that I didn't find a beautiful one-line solution using FIND FIRST, but it just gives the value it finds, not the position in the list, which is what we need to find the line endpoints in WIN LINES. So it's a plain old fashioned FOR loop.OXN/AOdata:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAeAAAAFoCAYAAACPNyggAAAAAXNSR0IArs4c6QAADoVJREFUeF7t1cEJAAAIxDDdf2m3sJ+4wEEQuuMIECBAgACBd4F9XzRIgAABAgQIjAB7AgIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECAiwHyBAgAABAoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQICLAfIECAAAECgYAAB+gmCRAgQICAAPsBAgQIECAQCAhwgG6SAAECBAgIsB8gQIAAAQKBgAAH6CYJECBAgIAA+wECBAgQIBAICHCAbpIAAQIECByxcQFpoRMBzwAAAABJRU5ErkJggg==10available squaresavailable squares1best spacebest spaceXOtrue1,2,3,4,5,6,7,8,9true-100,50100,50-100,0100,0-100,-50100,-50-50,100-50,-1000,1000,-10050,10050,-100-100,100100,-100-100,-100100,1002