q�V%(8,8),W%(8,8),X%(8,8),Y%(8,2),Z%(8,64):�a:�5:�23;&200A;0;0;0;:�b:�c:�1:�d:L%=0:�20,23;&400A;0;0;0;:*FX21,0
��8,28)"Start at Column ";:�:A$=�:F%=�(A$)-64:�F%<9�F%>0:�A$;:P%=F%:�", Row ";:�:A$=�:G%=9-�(A$):�G%<9�G%>0:�23;&200A;0;0;0;:�A$:Q%=G%:S%=F%+G%:�e(-1):�31,4*F%+1,3*G%:�f:�3,2,0,1:�20:�10,30)"Now let me think ...":�:�g:�L%=63�h:�
�:�i:�A%=0�j
(?�A%<>0:G%=G%+Y%(A%,1):F%=F%+Y%(A%,2):L%=L%+1:Z%(A%,L%)=1:��
2Q��j:V%(G%,F%)=0:�H%=1�8:�k:�K%<>0 W%(O%,N%)=W%(O%,N%)+1:W%(G%,F%)=W%(G%,F%)+1
<%�:�I%=1�8:�Z%(I%,L%)=1 J%=I%:I%=8
FQ�:Z%(J%,L%)=2:G%=G%-Y%(J%,1):F%=F%-Y%(J%,2):�I%=1�8:Z%(I%,L%+1)=0:�:L%=L%-1:�
P���d:�23;&200A;0;0;0;19,1,0;0;19,2,0;0;19,3,0;0;:�5,1)"A   B   C   D   E   F   G   H":�R%=1�8:�17,3,17,128:�1,R%*3+1);9-R%:�C%=1�8:S%=R%+C%:�e(0):�31,4*C%,R%*3:�l:�:�:�
Z>��c:�R%=1�8:�Y%(R%,1):�Y%(R%,2):�:�G%=1�8:�F%=1�8:�m:�:�:�
d&��m:E%=0:�H%=1�8:�k:�K%<>0 E%=E%+1
n�:W%(G%,F%)=E%:�
xT��g:V%(G%,F%)=1:W%(G%,F%)=0:X%(G%,F%)=L%:�H%=1�8:�k:�K%<>0 W%(O%,N%)=W%(O%,N%)-1
��:�
�E��i:A%=0:B%=10:�H%=1�8:�k:�K%<>0�Z%(H%,L%+1)<=0�D%<=B%B%=D%:A%=H%
��:�
�:��k:K%=1:O%=G%+Y%(H%,1):N%=F%+Y%(H%,2):�O%>8�O%<1 K%=0
��N%>8�N%<1 K%=0
�
�K%=0�
��V%(O%,N%)=1 K%=0
��K%=1 D%=W%(O%,N%)
��
�H��h:�10,30);�(20):�T%=1�63:�R%=1�8:�C%=1�8:�X%(R%,C%)=T%N%=C%:O%=R%
�}�:�:�n:�e(0):�o:S%=O%+N%:�e(-1):�31,4*N%+1,3*O%:�f:�3,2,0,1:Q%=O%:P%=N%:�:�n:�e(0):�o:�20,31,0,30,23;&670A;0;0;0;:*FX21,0
��
�+��l:�M%=1�3:�32,32,32,32,10,8,8,8,8:�:�

���a:�23,224,15,3,15,27,27,63,63,127:�23,225,0,192,112,120,184,188,180,172:�23,226,127,247,230,78,14,14,14,7:�23,227,92,124,204,184,240,192,48,224:�23,228,120,31,8,31,63,127,192,127:�23,229,30,248,16,248,252,254,3,254

,�2,1,0,2,3,10,20,10,100,-5,-5,-1,126,9:�

0��f:�224,225,10,8,8,226,227,10,8,8,228,229:�

".��o:�31,4*P%,3*Q%:�l:�4*P%+1,Q%*3+1);T%:�

,!��n:U%=�(50)+25:�=0:�:��>U%:�

6���b:�31,1,6:�f:�31,16,6:�f:�3,3)"Knight's Tour"�8,7)"by"�1,11)"Gordon Horsington":�2,18)"It is possible to"''"move a Knight round"''"a  Chess  board  so"''"that  it  lands  on"''"every square  once,"''"and only once.":�

@1��e(C%):�S%=(S%�2)*2�17,1,17,130��17,2,17,129

J�C%�17,0

T�

^,�1,2,1,-2,2,1,2,-1,-1,2,-1,-2,-2,1,-2,-1

h=���Hh��H��!�
��� �L�!����� �L�PA.=&1900
O.
RUN


r
�

00000000  0d 00 0a 71 de 56 25 28  38 2c 38 29 2c 57 25 28  |...q.V%(8,8),W%(|
00000010  38 2c 38 29 2c 58 25 28  38 2c 38 29 2c 59 25 28  |8,8),X%(8,8),Y%(|
00000020  38 2c 32 29 2c 5a 25 28  38 2c 36 34 29 3a f2 61  |8,2),Z%(8,64):.a|
00000030  3a eb 35 3a ef 32 33 3b  26 32 30 30 41 3b 30 3b  |:.5:.23;&200A;0;|
00000040  30 3b 30 3b 3a f2 62 3a  f2 63 3a eb 31 3a f2 64  |0;0;:.b:.c:.1:.d|
00000050  3a 4c 25 3d 30 3a ef 32  30 2c 32 33 3b 26 34 30  |:L%=0:.20,23;&40|
00000060  30 41 3b 30 3b 30 3b 30  3b 3a 2a 46 58 32 31 2c  |0A;0;0;0;:*FX21,|
00000070  30 0d 00 14 e9 f1 8a 38  2c 32 38 29 22 53 74 61  |0......8,28)"Sta|
00000080  72 74 20 61 74 20 43 6f  6c 75 6d 6e 20 22 3b 3a  |rt at Column ";:|
00000090  f5 3a 41 24 3d be 3a 46  25 3d 97 28 41 24 29 2d  |.:A$=.:F%=.(A$)-|
000000a0  36 34 3a fd 46 25 3c 39  80 46 25 3e 30 3a f1 41  |64:.F%<9.F%>0:.A|
000000b0  24 3b 3a 50 25 3d 46 25  3a f1 22 2c 20 52 6f 77  |$;:P%=F%:.", Row|
000000c0  20 22 3b 3a f5 3a 41 24  3d be 3a 47 25 3d 39 2d  | ";:.:A$=.:G%=9-|
000000d0  bb 28 41 24 29 3a fd 47  25 3c 39 80 47 25 3e 30  |.(A$):.G%<9.G%>0|
000000e0  3a ef 32 33 3b 26 32 30  30 41 3b 30 3b 30 3b 30  |:.23;&200A;0;0;0|
000000f0  3b 3a f1 41 24 3a 51 25  3d 47 25 3a 53 25 3d 46  |;:.A$:Q%=G%:S%=F|
00000100  25 2b 47 25 3a f2 65 28  2d 31 29 3a ef 33 31 2c  |%+G%:.e(-1):.31,|
00000110  34 2a 46 25 2b 31 2c 33  2a 47 25 3a f2 66 3a d4  |4*F%+1,3*G%:.f:.|
00000120  33 2c 32 2c 30 2c 31 3a  ef 32 30 3a f1 8a 31 30  |3,2,0,1:.20:..10|
00000130  2c 33 30 29 22 4e 6f 77  20 6c 65 74 20 6d 65 20  |,30)"Now let me |
00000140  74 68 69 6e 6b 20 2e 2e  2e 22 3a f5 3a f2 67 3a  |think ...":.:.g:|
00000150  e7 4c 25 3d 36 33 f2 68  3a e0 0d 00 1e 10 f5 3a  |.L%=63.h:......:|
00000160  f2 69 3a e7 41 25 3d 30  f2 6a 0d 00 28 3f fd 41  |.i:.A%=0.j..(?.A|
00000170  25 3c 3e 30 3a 47 25 3d  47 25 2b 59 25 28 41 25  |%<>0:G%=G%+Y%(A%|
00000180  2c 31 29 3a 46 25 3d 46  25 2b 59 25 28 41 25 2c  |,1):F%=F%+Y%(A%,|
00000190  32 29 3a 4c 25 3d 4c 25  2b 31 3a 5a 25 28 41 25  |2):L%=L%+1:Z%(A%|
000001a0  2c 4c 25 29 3d 31 3a fd  a3 0d 00 32 51 dd f2 6a  |,L%)=1:....2Q..j|
000001b0  3a 56 25 28 47 25 2c 46  25 29 3d 30 3a e3 48 25  |:V%(G%,F%)=0:.H%|
000001c0  3d 31 b8 38 3a f2 6b 3a  e7 4b 25 3c 3e 30 20 57  |=1.8:.k:.K%<>0 W|
000001d0  25 28 4f 25 2c 4e 25 29  3d 57 25 28 4f 25 2c 4e  |%(O%,N%)=W%(O%,N|
000001e0  25 29 2b 31 3a 57 25 28  47 25 2c 46 25 29 3d 57  |%)+1:W%(G%,F%)=W|
000001f0  25 28 47 25 2c 46 25 29  2b 31 0d 00 3c 25 ed 3a  |%(G%,F%)+1..<%.:|
00000200  e3 49 25 3d 31 b8 38 3a  e7 5a 25 28 49 25 2c 4c  |.I%=1.8:.Z%(I%,L|
00000210  25 29 3d 31 20 4a 25 3d  49 25 3a 49 25 3d 38 0d  |%)=1 J%=I%:I%=8.|
00000220  00 46 51 ed 3a 5a 25 28  4a 25 2c 4c 25 29 3d 32  |.FQ.:Z%(J%,L%)=2|
00000230  3a 47 25 3d 47 25 2d 59  25 28 4a 25 2c 31 29 3a  |:G%=G%-Y%(J%,1):|
00000240  46 25 3d 46 25 2d 59 25  28 4a 25 2c 32 29 3a e3  |F%=F%-Y%(J%,2):.|
00000250  49 25 3d 31 b8 38 3a 5a  25 28 49 25 2c 4c 25 2b  |I%=1.8:Z%(I%,L%+|
00000260  31 29 3d 30 3a ed 3a 4c  25 3d 4c 25 2d 31 3a e1  |1)=0:.:L%=L%-1:.|
00000270  0d 00 50 ad dd f2 64 3a  ef 32 33 3b 26 32 30 30  |..P...d:.23;&200|
00000280  41 3b 30 3b 30 3b 30 3b  31 39 2c 31 2c 30 3b 30  |A;0;0;0;19,1,0;0|
00000290  3b 31 39 2c 32 2c 30 3b  30 3b 31 39 2c 33 2c 30  |;19,2,0;0;19,3,0|
000002a0  3b 30 3b 3a f1 8a 35 2c  31 29 22 41 20 20 20 42  |;0;:..5,1)"A   B|
000002b0  20 20 20 43 20 20 20 44  20 20 20 45 20 20 20 46  |   C   D   E   F|
000002c0  20 20 20 47 20 20 20 48  22 3a e3 52 25 3d 31 b8  |   G   H":.R%=1.|
000002d0  38 3a ef 31 37 2c 33 2c  31 37 2c 31 32 38 3a f1  |8:.17,3,17,128:.|
000002e0  8a 31 2c 52 25 2a 33 2b  31 29 3b 39 2d 52 25 3a  |.1,R%*3+1);9-R%:|
000002f0  e3 43 25 3d 31 b8 38 3a  53 25 3d 52 25 2b 43 25  |.C%=1.8:S%=R%+C%|
00000300  3a f2 65 28 30 29 3a ef  33 31 2c 34 2a 43 25 2c  |:.e(0):.31,4*C%,|
00000310  52 25 2a 33 3a f2 6c 3a  ed 3a ed 3a e1 0d 00 5a  |R%*3:.l:.:.:...Z|
00000320  3e dd f2 63 3a e3 52 25  3d 31 b8 38 3a f3 59 25  |>..c:.R%=1.8:.Y%|
00000330  28 52 25 2c 31 29 3a f3  59 25 28 52 25 2c 32 29  |(R%,1):.Y%(R%,2)|
00000340  3a ed 3a e3 47 25 3d 31  b8 38 3a e3 46 25 3d 31  |:.:.G%=1.8:.F%=1|
00000350  b8 38 3a f2 6d 3a ed 3a  ed 3a e1 0d 00 64 26 dd  |.8:.m:.:.:...d&.|
00000360  f2 6d 3a 45 25 3d 30 3a  e3 48 25 3d 31 b8 38 3a  |.m:E%=0:.H%=1.8:|
00000370  f2 6b 3a e7 4b 25 3c 3e  30 20 45 25 3d 45 25 2b  |.k:.K%<>0 E%=E%+|
00000380  31 0d 00 6e 14 ed 3a 57  25 28 47 25 2c 46 25 29  |1..n..:W%(G%,F%)|
00000390  3d 45 25 3a e1 0d 00 78  54 dd f2 67 3a 56 25 28  |=E%:...xT..g:V%(|
000003a0  47 25 2c 46 25 29 3d 31  3a 57 25 28 47 25 2c 46  |G%,F%)=1:W%(G%,F|
000003b0  25 29 3d 30 3a 58 25 28  47 25 2c 46 25 29 3d 4c  |%)=0:X%(G%,F%)=L|
000003c0  25 3a e3 48 25 3d 31 b8  38 3a f2 6b 3a e7 4b 25  |%:.H%=1.8:.k:.K%|
000003d0  3c 3e 30 20 57 25 28 4f  25 2c 4e 25 29 3d 57 25  |<>0 W%(O%,N%)=W%|
000003e0  28 4f 25 2c 4e 25 29 2d  31 0d 00 82 07 ed 3a e1  |(O%,N%)-1.....:.|
000003f0  0d 00 8c 45 dd f2 69 3a  41 25 3d 30 3a 42 25 3d  |...E..i:A%=0:B%=|
00000400  31 30 3a e3 48 25 3d 31  b8 38 3a f2 6b 3a e7 4b  |10:.H%=1.8:.k:.K|
00000410  25 3c 3e 30 e7 5a 25 28  48 25 2c 4c 25 2b 31 29  |%<>0.Z%(H%,L%+1)|
00000420  3c 3d 30 e7 44 25 3c 3d  42 25 42 25 3d 44 25 3a  |<=0.D%<=B%B%=D%:|
00000430  41 25 3d 48 25 0d 00 96  07 ed 3a e1 0d 00 a0 3a  |A%=H%.....:....:|
00000440  dd f2 6b 3a 4b 25 3d 31  3a 4f 25 3d 47 25 2b 59  |..k:K%=1:O%=G%+Y|
00000450  25 28 48 25 2c 31 29 3a  4e 25 3d 46 25 2b 59 25  |%(H%,1):N%=F%+Y%|
00000460  28 48 25 2c 32 29 3a e7  4f 25 3e 38 84 4f 25 3c  |(H%,2):.O%>8.O%<|
00000470  31 20 4b 25 3d 30 0d 00  aa 13 e7 4e 25 3e 38 84  |1 K%=0.....N%>8.|
00000480  4e 25 3c 31 20 4b 25 3d  30 0d 00 b4 0a e7 4b 25  |N%<1 K%=0.....K%|
00000490  3d 30 e1 0d 00 be 15 e7  56 25 28 4f 25 2c 4e 25  |=0......V%(O%,N%|
000004a0  29 3d 31 20 4b 25 3d 30  0d 00 c8 16 e7 4b 25 3d  |)=1 K%=0.....K%=|
000004b0  31 20 44 25 3d 57 25 28  4f 25 2c 4e 25 29 0d 00  |1 D%=W%(O%,N%)..|
000004c0  d2 05 e1 0d 00 dc 48 dd  f2 68 3a f1 8a 31 30 2c  |......H..h:..10,|
000004d0  33 30 29 3b 89 28 32 30  29 3a e3 54 25 3d 31 b8  |30);.(20):.T%=1.|
000004e0  36 33 3a e3 52 25 3d 31  b8 38 3a e3 43 25 3d 31  |63:.R%=1.8:.C%=1|
000004f0  b8 38 3a e7 58 25 28 52  25 2c 43 25 29 3d 54 25  |.8:.X%(R%,C%)=T%|
00000500  4e 25 3d 43 25 3a 4f 25  3d 52 25 0d 00 e6 7d ed  |N%=C%:O%=R%...}.|
00000510  3a ed 3a f2 6e 3a f2 65  28 30 29 3a f2 6f 3a 53  |:.:.n:.e(0):.o:S|
00000520  25 3d 4f 25 2b 4e 25 3a  f2 65 28 2d 31 29 3a ef  |%=O%+N%:.e(-1):.|
00000530  33 31 2c 34 2a 4e 25 2b  31 2c 33 2a 4f 25 3a f2  |31,4*N%+1,3*O%:.|
00000540  66 3a d4 33 2c 32 2c 30  2c 31 3a 51 25 3d 4f 25  |f:.3,2,0,1:Q%=O%|
00000550  3a 50 25 3d 4e 25 3a ed  3a f2 6e 3a f2 65 28 30  |:P%=N%:.:.n:.e(0|
00000560  29 3a f2 6f 3a ef 32 30  2c 33 31 2c 30 2c 33 30  |):.o:.20,31,0,30|
00000570  2c 32 33 3b 26 36 37 30  41 3b 30 3b 30 3b 30 3b  |,23;&670A;0;0;0;|
00000580  3a 2a 46 58 32 31 2c 30  0d 00 f0 05 e1 0d 00 fa  |:*FX21,0........|
00000590  2b dd f2 6c 3a e3 4d 25  3d 31 b8 33 3a ef 33 32  |+..l:.M%=1.3:.32|
000005a0  2c 33 32 2c 33 32 2c 33  32 2c 31 30 2c 38 2c 38  |,32,32,32,10,8,8|
000005b0  2c 38 2c 38 3a ed 3a e1  0d 01 04 dc dd f2 61 3a  |,8,8:.:.......a:|
000005c0  ef 32 33 2c 32 32 34 2c  31 35 2c 33 2c 31 35 2c  |.23,224,15,3,15,|
000005d0  32 37 2c 32 37 2c 36 33  2c 36 33 2c 31 32 37 3a  |27,27,63,63,127:|
000005e0  ef 32 33 2c 32 32 35 2c  30 2c 31 39 32 2c 31 31  |.23,225,0,192,11|
000005f0  32 2c 31 32 30 2c 31 38  34 2c 31 38 38 2c 31 38  |2,120,184,188,18|
00000600  30 2c 31 37 32 3a ef 32  33 2c 32 32 36 2c 31 32  |0,172:.23,226,12|
00000610  37 2c 32 34 37 2c 32 33  30 2c 37 38 2c 31 34 2c  |7,247,230,78,14,|
00000620  31 34 2c 31 34 2c 37 3a  ef 32 33 2c 32 32 37 2c  |14,14,7:.23,227,|
00000630  39 32 2c 31 32 34 2c 32  30 34 2c 31 38 34 2c 32  |92,124,204,184,2|
00000640  34 30 2c 31 39 32 2c 34  38 2c 32 32 34 3a ef 32  |40,192,48,224:.2|
00000650  33 2c 32 32 38 2c 31 32  30 2c 33 31 2c 38 2c 33  |3,228,120,31,8,3|
00000660  31 2c 36 33 2c 31 32 37  2c 31 39 32 2c 31 32 37  |1,63,127,192,127|
00000670  3a ef 32 33 2c 32 32 39  2c 33 30 2c 32 34 38 2c  |:.23,229,30,248,|
00000680  31 36 2c 32 34 38 2c 32  35 32 2c 32 35 34 2c 33  |16,248,252,254,3|
00000690  2c 32 35 34 0d 01 0e 2c  e2 32 2c 31 2c 30 2c 32  |,254...,.2,1,0,2|
000006a0  2c 33 2c 31 30 2c 32 30  2c 31 30 2c 31 30 30 2c  |,3,10,20,10,100,|
000006b0  2d 35 2c 2d 35 2c 2d 31  2c 31 32 36 2c 39 3a e1  |-5,-5,-1,126,9:.|
000006c0  0d 01 18 30 dd f2 66 3a  ef 32 32 34 2c 32 32 35  |...0..f:.224,225|
000006d0  2c 31 30 2c 38 2c 38 2c  32 32 36 2c 32 32 37 2c  |,10,8,8,226,227,|
000006e0  31 30 2c 38 2c 38 2c 32  32 38 2c 32 32 39 3a e1  |10,8,8,228,229:.|
000006f0  0d 01 22 2e dd f2 6f 3a  ef 33 31 2c 34 2a 50 25  |.."...o:.31,4*P%|
00000700  2c 33 2a 51 25 3a f2 6c  3a f1 8a 34 2a 50 25 2b  |,3*Q%:.l:..4*P%+|
00000710  31 2c 51 25 2a 33 2b 31  29 3b 54 25 3a e1 0d 01  |1,Q%*3+1);T%:...|
00000720  2c 21 dd f2 6e 3a 55 25  3d b3 28 35 30 29 2b 32  |,!..n:U%=.(50)+2|
00000730  35 3a d1 3d 30 3a f5 3a  fd 91 3e 55 25 3a e1 0d  |5:.=0:.:..>U%:..|
00000740  01 36 e1 dd f2 62 3a ef  33 31 2c 31 2c 36 3a f2  |.6...b:.31,1,6:.|
00000750  66 3a ef 33 31 2c 31 36  2c 36 3a f2 66 3a f1 8a  |f:.31,16,6:.f:..|
00000760  33 2c 33 29 22 4b 6e 69  67 68 74 27 73 20 54 6f  |3,3)"Knight's To|
00000770  75 72 22 8a 38 2c 37 29  22 62 79 22 8a 31 2c 31  |ur".8,7)"by".1,1|
00000780  31 29 22 47 6f 72 64 6f  6e 20 48 6f 72 73 69 6e  |1)"Gordon Horsin|
00000790  67 74 6f 6e 22 3a f1 8a  32 2c 31 38 29 22 49 74  |gton":..2,18)"It|
000007a0  20 69 73 20 70 6f 73 73  69 62 6c 65 20 74 6f 22  | is possible to"|
000007b0  27 27 22 6d 6f 76 65 20  61 20 4b 6e 69 67 68 74  |''"move a Knight|
000007c0  20 72 6f 75 6e 64 22 27  27 22 61 20 20 43 68 65  | round"''"a  Che|
000007d0  73 73 20 20 62 6f 61 72  64 20 20 73 6f 22 27 27  |ss  board  so"''|
000007e0  22 74 68 61 74 20 20 69  74 20 20 6c 61 6e 64 73  |"that  it  lands|
000007f0  20 20 6f 6e 22 27 27 22  65 76 65 72 79 20 73 71  |  on"''"every sq|
00000800  75 61 72 65 20 20 6f 6e  63 65 2c 22 27 27 22 61  |uare  once,"''"a|
00000810  6e 64 20 6f 6e 6c 79 20  6f 6e 63 65 2e 22 3a e1  |nd only once.":.|
00000820  0d 01 40 31 dd f2 65 28  43 25 29 3a e7 53 25 3d  |..@1..e(C%):.S%=|
00000830  28 53 25 81 32 29 2a 32  ef 31 37 2c 31 2c 31 37  |(S%.2)*2.17,1,17|
00000840  2c 31 33 30 8b ef 31 37  2c 32 2c 31 37 2c 31 32  |,130..17,2,17,12|
00000850  39 0d 01 4a 0c e7 43 25  ef 31 37 2c 30 0d 01 54  |9..J..C%.17,0..T|
00000860  05 e1 0d 01 5e 2c dc 31  2c 32 2c 31 2c 2d 32 2c  |....^,.1,2,1,-2,|
00000870  32 2c 31 2c 32 2c 2d 31  2c 2d 31 2c 32 2c 2d 31  |2,1,2,-1,-1,2,-1|
00000880  2c 2d 32 2c 2d 32 2c 31  2c 2d 32 2c 2d 31 0d 01  |,-2,-2,1,-2,-1..|
00000890  68 3d f4 15 a9 ff 48 68  aa e8 8a 48 bc b9 21 f0  |h=....Hh...H..!.|
000008a0  0a a2 00 a9 8a 20 f4 ff  4c 97 21 a9 bb a2 00 a0  |..... ..L.!.....|
000008b0  ff 20 f4 ff a9 8e 4c f4  ff 50 41 2e 3d 26 31 39  |. ....L..PA.=&19|
000008c0  30 30 0d 4f 2e 0d 52 55  4e 0d 00 0d 01 72 05 06  |00.O..RUN....r..|
000008d0  0d ff                                             |..|
000008d2