Since no firstrank constant has been stored for this game, one will be calculated by analyzing the moves in the game. This will work only if the game lasted long enough to put enough pieces into play.

mv is d2-d4, p is #p, o is d2

space d2 is P

0 P d2-d4 27 61 59 61 59 61 59 29

11011 111101 111011 111101 111011 111101 111011 11101

mv is p d7-d5, p is p, o is d7

space d7 is p

1 p p d7-d5 27 61 59 61 59 61 59 29

11011 111101 111011 111101 111011 111101 111011 11101

mv is e2-e4, p is #p, o is e2

space e2 is P

2 P e2-e4 27 61 59 61 59 61 59 29

11011 111101 111011 111101 111011 111101 111011 11101

mv is p d5-e4, p is p, o is d5

space d5 is p

3 p p d5-e4 27 61 59 61 59 61 59 29

11011 111101 111011 111101 111011 111101 111011 11101

mv is R e1-e4, p is R, o is e1

space e1 is e1

4 e1 R e1-e4 27 61 59 61 59 61 59 29

11011 111101 111011 111101 111011 111101 111011 11101

5 one bits in var e1

11011 111101 111011 111101 1000 111101 111011 11101

q end R e1-e4 27 61 59 61 8 61 59 29

bb end R e1-e4 27 61 59 61 8 61 59 29

bw end R e1-e4 27 61 59 61 8 61 59 29

firstr is a1, and lastr is h1

One Rook found

f1 61

r R e1-e4 27 61 59 53 8 53 59 29

first 27 61 59 53 8 53 59 29

11011 111101 111011 110101 1000 110101 111011 11101

q end R e1-e4 27 61 59 53 8 53 59 29

bb end R e1-e4 27 61 59 53 8 53 59 29

bw end R e1-e4 27 61 59 53 8 53 59 29

firstr is a1, and lastr is h1

One Rook found

f1 53

r R e1-e4 27 61 59 53 8 53 59 29

first 27 61 59 53 8 53 59 29

mv is n g8-f6, p is n, o is g8

space g8 is g1

5 g1 n g8-f6 27 61 59 53 8 53 59 29

11011 111101 111011 110101 1000 110101 111011 11101

5 one bits in var g1

11011 111101 111011 110101 1000 110101 1 11101

q end n g8-f6 27 61 59 53 8 53 1 29

bb end n g8-f6 27 61 59 53 8 53 1 29

bw end n g8-f6 27 61 59 53 8 53 1 29

firstr is a1, and lastr is h1

One Rook found

f1 53

r n g8-f6 27 61 59 53 8 53 1 29

first 27 61 59 53 8 53 1 29

mv is e4-e3, p is #p, o is e4

space e4 is e1

6 e1 e4-e3 27 61 59 53 8 53 1 29

11011 111101 111011 110101 1000 110101 1 11101

1 one bits in var e1

11011 111101 111011 110101 1000 110101 1 11101

q end e4-e3 27 61 59 53 8 53 1 29

bb end e4-e3 27 61 59 53 8 53 1 29

bw end e4-e3 27 61 59 53 8 53 1 29

firstr is a1, and lastr is h1

One Rook found

f1 53

r e4-e3 27 61 59 53 8 53 1 29

first 27 61 59 53 8 53 1 29

mv is n h8-g6, p is n, o is h8

space h8 is h1

7 h1 n h8-g6 27 61 59 53 8 53 1 29

11011 111101 111011 110101 1000 110101 1 11101

4 one bits in var h1

11011 111101 111011 110101 1000 110101 1 1

q end n h8-g6 27 61 59 53 8 53 1 1

bb end n h8-g6 27 61 59 53 8 53 1 1

bw end n h8-g6 27 61 59 53 8 53 1 1

firstr is a1, and lastr is e1

One Rook found

f1 21

g1 1

h1 1

r n h8-g6 27 61 59 53 8 21 1 1

first 27 61 59 53 8 21 1 1

11010 111100 111010 110100 1000 10100 1 1

q end n h8-g6 26 60 58 52 8 20 1 1

bb end n h8-g6 26 60 58 52 8 20 1 1

bw end n h8-g6 26 60 58 52 8 20 1 1

firstr is a1, and lastr is e1

One Rook found

f1 20

g1 1

h1 1

r n h8-g6 26 60 58 52 8 20 1 1

first 26 60 58 52 8 20 1 1

mv is N g1-f3, p is N, o is g1

space g1 is g1

8 g1 N g1-f3 26 60 58 52 8 20 1 1

11010 111100 111010 110100 1000 10100 1 1

1 one bits in var g1

11010 111100 111010 110100 1000 10100 1 1

q end N g1-f3 26 60 58 52 8 20 1 1

bb end N g1-f3 26 60 58 52 8 20 1 1

bw end N g1-f3 26 60 58 52 8 20 1 1

firstr is a1, and lastr is e1

One Rook found

f1 20

g1 1

h1 1

r N g1-f3 26 60 58 52 8 20 1 1

first 26 60 58 52 8 20 1 1

mv is b c8-g4, p is b, o is c8

space c8 is c1

9 c1 b c8-g4 26 60 58 52 8 20 1 1

11010 111100 111010 110100 1000 10100 1 1

4 one bits in var c1

11010 111100 10 110100 1000 10100 1 1

q end b c8-g4 26 60 2 52 8 20 1 1

bb end b c8-g4 24 60 2 52 8 20 1 1

bw end b c8-g4 24 60 2 52 8 20 1 1

firstr is a1, and lastr is e1

One Rook found

f1 20

g1 1

h1 1

r b c8-g4 24 60 2 52 8 20 1 1

first 24 60 2 52 8 20 1 1

11000 111100 10 110100 1000 10100 1 1

q end b c8-g4 24 60 2 52 8 20 1 1

bb end b c8-g4 24 60 2 52 8 20 1 1

bw end b c8-g4 24 60 2 52 8 20 1 1

firstr is a1, and lastr is e1

One Rook found

f1 20

g1 1

h1 1

r b c8-g4 24 60 2 52 8 20 1 1

first 24 60 2 52 8 20 1 1

mv is N f3-e5, p is N, o is f3

space f3 is g1

10 g1 N f3-e5 24 60 2 52 8 20 1 1

11000 111100 10 110100 1000 10100 1 1

1 one bits in var g1

11000 111100 10 110100 1000 10100 1 1

q end N f3-e5 24 60 2 52 8 20 1 1

bb end N f3-e5 24 60 2 52 8 20 1 1

bw end N f3-e5 24 60 2 52 8 20 1 1

firstr is a1, and lastr is e1

One Rook found

f1 20

g1 1

h1 1

r N f3-e5 24 60 2 52 8 20 1 1

first 24 60 2 52 8 20 1 1

mv is n g6-e5, p is n, o is g6

space g6 is h1

11 h1 n g6-e5 24 60 2 52 8 20 1 1

11000 111100 10 110100 1000 10100 1 1

1 one bits in var h1

11000 111100 10 110100 1000 10100 1 1

q end n g6-e5 24 60 2 52 8 20 1 1

bb end n g6-e5 24 60 2 52 8 20 1 1

bw end n g6-e5 24 60 2 52 8 20 1 1

firstr is a1, and lastr is e1

One Rook found

f1 20

g1 1

h1 1

r n g6-e5 24 60 2 52 8 20 1 1

first 24 60 2 52 8 20 1 1

mv is d4-e5, p is #p, o is d4

space d4 is P

12 P d4-e5 24 60 2 52 8 20 1 1

11000 111100 10 110100 1000 10100 1 1

mv is b g4-d1, p is b, o is g4

space g4 is c1

13 c1 b g4-d1 24 60 2 52 8 20 1 1

11000 111100 10 110100 1000 10100 1 1

1 one bits in var c1

11000 111100 10 110100 1000 10100 1 1

q end b g4-d1 24 60 2 52 8 20 1 1

bb end b g4-d1 24 60 2 52 8 20 1 1

bw end b g4-d1 24 60 2 52 8 20 1 1

firstr is a1, and lastr is e1

One Rook found

f1 20

g1 1

h1 1

r b g4-d1 24 60 2 52 8 20 1 1

first 24 60 2 52 8 20 1 1

mv is Q f1-d1, p is Q, o is f1

space f1 is f1

14 f1 Q f1-d1 24 60 2 52 8 20 1 1

11000 111100 10 110100 1000 10100 1 1

2 one bits in var f1

11000 111100 10 110100 1000 10000 1 1

queen before Q f1-d1 24 60 2 52 8 16 1 1

queen after Q f1-d1 8 44 2 36 8 16 1 1

q end Q f1-d1 8 44 2 36 8 16 1 1

bb end Q f1-d1 8 44 2 36 8 16 1 1

bw end Q f1-d1 8 44 2 36 8 16 1 1

firstr is a1, and lastr is e1

Two rooks found.

r Q f1-d1 8 36 2 36 8 16 1 1

first 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

q end Q f1-d1 8 36 2 36 8 16 1 1

bb end Q f1-d1 8 36 2 36 8 16 1 1

bw end Q f1-d1 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is n f6-g8, p is n, o is f6

space f6 is g1

15 g1 n f6-g8 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var g1

1000 100100 10 100100 1000 10000 1 1

q end n f6-g8 8 36 2 36 8 16 1 1

bb end n f6-g8 8 36 2 36 8 16 1 1

bw end n f6-g8 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is N h1-g3, p is N, o is h1

space h1 is h1

16 h1 N h1-g3 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var h1

1000 100100 10 100100 1000 10000 1 1

q end N h1-g3 8 36 2 36 8 16 1 1

bb end N h1-g3 8 36 2 36 8 16 1 1

bw end N h1-g3 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is p e7-e6, p is p, o is e7

space e7 is p

17 p p e7-e6 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

mv is R e3-b3, p is R, o is e3

space e3 is e1

18 e1 R e3-b3 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var e1

1000 100100 10 100100 1000 10000 1 1

q end R e3-b3 8 36 2 36 8 16 1 1

bb end R e3-b3 8 36 2 36 8 16 1 1

bw end R e3-b3 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is q f8-c5, p is q, o is f8

space f8 is f1

19 f1 q f8-c5 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var f1

1000 100100 10 100100 1000 10000 1 1

q end q f8-c5 8 36 2 36 8 16 1 1

bb end q f8-c5 8 36 2 36 8 16 1 1

bw end q f8-c5 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is B c1-e3, p is B, o is c1

space c1 is c1

20 c1 B c1-e3 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var c1

1000 100100 10 100100 1000 10000 1 1

q end B c1-e3 8 36 2 36 8 16 1 1

bb end B c1-e3 8 36 2 36 8 16 1 1

bw end B c1-e3 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is q c5-e5, p is q, o is c5

space c5 is f1

21 f1 q c5-e5 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var f1

1000 100100 10 100100 1000 10000 1 1

q end q c5-e5 8 36 2 36 8 16 1 1

bb end q c5-e5 8 36 2 36 8 16 1 1

bw end q c5-e5 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is Q d1-d4, p is Q, o is d1

space d1 is f1

22 f1 Q d1-d4 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var f1

1000 100100 10 100100 1000 10000 1 1

q end Q d1-d4 8 36 2 36 8 16 1 1

bb end Q d1-d4 8 36 2 36 8 16 1 1

bw end Q d1-d4 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is q e5-d4, p is q, o is e5

space e5 is f1

23 f1 q e5-d4 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var f1

1000 100100 10 100100 1000 10000 1 1

q end q e5-d4 8 36 2 36 8 16 1 1

bb end q e5-d4 8 36 2 36 8 16 1 1

bw end q e5-d4 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is B e3-d4, p is B, o is e3

space e3 is c1

24 c1 B e3-d4 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var c1

1000 100100 10 100100 1000 10000 1 1

q end B e3-d4 8 36 2 36 8 16 1 1

bb end B e3-d4 8 36 2 36 8 16 1 1

bw end B e3-d4 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is p f7-f6, p is p, o is f7

space f7 is p

25 p p f7-f6 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

mv is N g3-e2, p is N, o is g3

space g3 is h1

26 h1 N g3-e2 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var h1

1000 100100 10 100100 1000 10000 1 1

q end N g3-e2 8 36 2 36 8 16 1 1

bb end N g3-e2 8 36 2 36 8 16 1 1

bw end N g3-e2 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is p e6-e5, p is p, o is e6

space e6 is p

27 p p e6-e5 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

mv is B d4-e3, p is B, o is d4

space d4 is c1

28 c1 B d4-e3 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var c1

1000 100100 10 100100 1000 10000 1 1

q end B d4-e3 8 36 2 36 8 16 1 1

bb end B d4-e3 8 36 2 36 8 16 1 1

bw end B d4-e3 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is n g8-e7, p is n, o is g8

space g8 is g1

29 g1 n g8-e7 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var g1

1000 100100 10 100100 1000 10000 1 1

q end n g8-e7 8 36 2 36 8 16 1 1

bb end n g8-e7 8 36 2 36 8 16 1 1

bw end n g8-e7 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is N e2-c3, p is N, o is e2

space e2 is h1

30 h1 N e2-c3 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var h1

1000 100100 10 100100 1000 10000 1 1

q end N e2-c3 8 36 2 36 8 16 1 1

bb end N e2-c3 8 36 2 36 8 16 1 1

bw end N e2-c3 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is n e7-f5, p is n, o is e7

space e7 is g1

31 g1 n e7-f5 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var g1

1000 100100 10 100100 1000 10000 1 1

q end n e7-f5 8 36 2 36 8 16 1 1

bb end n e7-f5 8 36 2 36 8 16 1 1

bw end n e7-f5 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is B e3-d2, p is B, o is e3

space e3 is c1

32 c1 B e3-d2 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

1 one bits in var c1

1000 100100 10 100100 1000 10000 1 1

q end B e3-d2 8 36 2 36 8 16 1 1

bb end B e3-d2 8 36 2 36 8 16 1 1

bw end B e3-d2 8 36 2 36 8 16 1 1

a1 e1

first 8 36 2 36 8 16 1 1

mv is b d8-e7, p is b, o is d8

space d8 is d1

33 d1 b d8-e7 8 36 2 36 8 16 1 1

1000 100100 10 100100 1000 10000 1 1

2 one bits in var d1

1000 100100 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end b d8-e7 8 32 2 4 8 16 1 1

bb end b d8-e7 8 32 2 4 8 16 1 1

bw end b d8-e7 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end b d8-e7 8 32 2 4 8 16 1 1

bb end b d8-e7 8 32 2 4 8 16 1 1

bw end b d8-e7 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is N c3-d5, p is N, o is c3

space c3 is h1

34 h1 N c3-d5 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var h1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end N c3-d5 8 32 2 4 8 16 1 1

bb end N c3-d5 8 32 2 4 8 16 1 1

bw end N c3-d5 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is a8-d8, p is #p, o is a8

space a8 is a1

35 a1 a8-d8 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var a1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end a8-d8 8 32 2 4 8 16 1 1

bb end a8-d8 8 32 2 4 8 16 1 1

bw end a8-d8 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is R b3-d3, p is R, o is b3

space b3 is e1

36 e1 R b3-d3 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var e1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end R b3-d3 8 32 2 4 8 16 1 1

bb end R b3-d3 8 32 2 4 8 16 1 1

bw end R b3-d3 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is b e7-c5, p is b, o is e7

space e7 is d1

37 d1 b e7-c5 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var d1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end b e7-c5 8 32 2 4 8 16 1 1

bb end b e7-c5 8 32 2 4 8 16 1 1

bw end b e7-c5 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is f2-f3, p is #p, o is f2

space f2 is P

38 P f2-f3 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is b c5-d4, p is b, o is c5

space c5 is d1

39 d1 b c5-d4 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var d1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end b c5-d4 8 32 2 4 8 16 1 1

bb end b c5-d4 8 32 2 4 8 16 1 1

bw end b c5-d4 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is N d5-b4, p is N, o is d5

space d5 is h1

40 h1 N d5-b4 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var h1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end N d5-b4 8 32 2 4 8 16 1 1

bb end N d5-b4 8 32 2 4 8 16 1 1

bw end N d5-b4 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is p a7-a5, p is p, o is a7

space a7 is p

41 p p a7-a5 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is c2-c3, p is #p, o is c2

space c2 is P

42 P c2-c3 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is p e5-e4, p is p, o is e5

space e5 is p

43 p p e5-e4 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is f3-e4, p is #p, o is f3

space f3 is P

44 P f3-e4 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is r e8-e4, p is r, o is e8

space e8 is e1

45 e1 r e8-e4 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var e1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end r e8-e4 8 32 2 4 8 16 1 1

bb end r e8-e4 8 32 2 4 8 16 1 1

bw end r e8-e4 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is N b4-c2, p is N, o is b4

space b4 is h1

46 h1 N b4-c2 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var h1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end N b4-c2 8 32 2 4 8 16 1 1

bb end N b4-c2 8 32 2 4 8 16 1 1

bw end N b4-c2 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is b d4-e5, p is b, o is d4

space d4 is d1

47 d1 b d4-e5 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var d1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end b d4-e5 8 32 2 4 8 16 1 1

bb end b d4-e5 8 32 2 4 8 16 1 1

bw end b d4-e5 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is R d3-d8, p is R, o is d3

space d3 is e1

48 e1 R d3-d8 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var e1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end R d3-d8 8 32 2 4 8 16 1 1

bb end R d3-d8 8 32 2 4 8 16 1 1

bw end R d3-d8 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is k c8-d8, p is k, o is c8

space c8 is @

49 @ k c8-d8 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

0 one bits in var @

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end k c8-d8 8 32 2 4 8 16 1 1

bb end k c8-d8 8 32 2 4 8 16 1 1

bw end k c8-d8 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is b2-b3, p is #p, o is b2

space b2 is P

50 P b2-b3 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is r e4-e2, p is r, o is e4

space e4 is e1

51 e1 r e4-e2 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var e1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end r e4-e2 8 32 2 4 8 16 1 1

bb end r e4-e2 8 32 2 4 8 16 1 1

bw end r e4-e2 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is K b1-c1, p is K, o is b1

space b1 is b1

52 b1 K b1-c1 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var b1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end K b1-c1 8 32 2 4 8 16 1 1

bb end K b1-c1 8 32 2 4 8 16 1 1

bw end K b1-c1 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is r e2-g2, p is r, o is e2

space e2 is e1

53 e1 r e2-g2 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var e1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end r e2-g2 8 32 2 4 8 16 1 1

bb end r e2-g2 8 32 2 4 8 16 1 1

bw end r e2-g2 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is h2-h3, p is #p, o is h2

space h2 is P

54 P h2-h3 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is p g7-g5, p is p, o is g7

space g7 is p

55 p p g7-g5 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is B d2-e1, p is B, o is d2

space d2 is c1

56 c1 B d2-e1 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var c1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end B d2-e1 8 32 2 4 8 16 1 1

bb end B d2-e1 8 32 2 4 8 16 1 1

bw end B d2-e1 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is p g5-g4, p is p, o is g5

space g5 is p

57 p p g5-g4 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is P h3-g4, p is P, o is h3

space h3 is P

58 P P h3-g4 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is r g2-g4, p is r, o is g2

space g2 is e1

59 e1 r g2-g4 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var e1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end r g2-g4 8 32 2 4 8 16 1 1

bb end r g2-g4 8 32 2 4 8 16 1 1

bw end r g2-g4 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is K c1-b2, p is K, o is c1

space c1 is b1

60 b1 K c1-b2 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var b1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end K c1-b2 8 32 2 4 8 16 1 1

bb end K c1-b2 8 32 2 4 8 16 1 1

bw end K c1-b2 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is p h7-h5, p is p, o is h7

space h7 is p

61 p p h7-h5 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is R a1-d1, p is R, o is a1

space a1 is a1

62 a1 R a1-d1 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var a1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end R a1-d1 8 32 2 4 8 16 1 1

bb end R a1-d1 8 32 2 4 8 16 1 1

bw end R a1-d1 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is k d8-c8, p is k, o is d8

space d8 is @

63 @ k d8-c8 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

0 one bits in var @

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end k d8-c8 8 32 2 4 8 16 1 1

bb end k d8-c8 8 32 2 4 8 16 1 1

bw end k d8-c8 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is B e1-f2, p is B, o is e1

space e1 is c1

64 c1 B e1-f2 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var c1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end B e1-f2 8 32 2 4 8 16 1 1

bb end B e1-f2 8 32 2 4 8 16 1 1

bw end B e1-f2 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is p b7-b5, p is p, o is b7

space b7 is p

65 p p b7-b5 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is P a2-a3, p is P, o is a2

space a2 is P

66 P P a2-a3 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is p b5-b4, p is p, o is b5

space b5 is p

67 p p b5-b4 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is B f2-d4, p is B, o is f2

space f2 is c1

68 c1 B f2-d4 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var c1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end B f2-d4 8 32 2 4 8 16 1 1

bb end B f2-d4 8 32 2 4 8 16 1 1

bw end B f2-d4 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is p b4-c3, p is p, o is b4

space b4 is p

69 p p b4-c3 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is B d4-c3, p is B, o is d4

space d4 is c1

70 c1 B d4-c3 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var c1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end B d4-c3 8 32 2 4 8 16 1 1

bb end B d4-c3 8 32 2 4 8 16 1 1

bw end B d4-c3 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is p h5-h4, p is p, o is h5

space h5 is p

71 p p h5-h4 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is R d1-h1, p is R, o is d1

space d1 is a1

72 a1 R d1-h1 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var a1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end R d1-h1 8 32 2 4 8 16 1 1

bb end R d1-h1 8 32 2 4 8 16 1 1

bw end R d1-h1 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is b e5-c3, p is b, o is e5

space e5 is d1

73 d1 b e5-c3 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var d1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end b e5-c3 8 32 2 4 8 16 1 1

bb end b e5-c3 8 32 2 4 8 16 1 1

bw end b e5-c3 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is K b2-c3, p is K, o is b2

space b2 is b1

74 b1 K b2-c3 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var b1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end K b2-c3 8 32 2 4 8 16 1 1

bb end K b2-c3 8 32 2 4 8 16 1 1

bw end K b2-c3 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is n f5-g3, p is n, o is f5

space f5 is g1

75 g1 n f5-g3 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var g1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end n f5-g3 8 32 2 4 8 16 1 1

bb end n f5-g3 8 32 2 4 8 16 1 1

bw end n f5-g3 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is R h1-h2, p is R, o is h1

space h1 is a1

76 a1 R h1-h2 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var a1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end R h1-h2 8 32 2 4 8 16 1 1

bb end R h1-h2 8 32 2 4 8 16 1 1

bw end R h1-h2 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is p f6-f5, p is p, o is f6

space f6 is p

77 p p f6-f5 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

mv is N c2-e3, p is N, o is c2

space c2 is h1

78 h1 N c2-e3 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var h1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end N c2-e3 8 32 2 4 8 16 1 1

bb end N c2-e3 8 32 2 4 8 16 1 1

bw end N c2-e3 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is n g3-e4, p is n, o is g3

space g3 is g1

79 g1 n g3-e4 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var g1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end n g3-e4 8 32 2 4 8 16 1 1

bb end n g3-e4 8 32 2 4 8 16 1 1

bw end n g3-e4 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is K c3-d4, p is K, o is c3

space c3 is b1

80 b1 K c3-d4 8 32 2 4 8 16 1 1

1000 100000 10 100 1000 10000 1 1

1 one bits in var b1

1000 100000 10 100 1000 10000 1 1

Array
(
    [0] => a1
)

q end K c3-d4 8 32 2 4 8 16 1 1

bb end K c3-d4 8 32 2 4 8 16 1 1

bw end K c3-d4 8 32 2 4 8 16 1 1

first 8 32 2 4 8 16 1 1

mv is resign, p is #p, o is resign

Continue because resign is resign

Continue because mv is empty

firstrank is RKBBRQNN

Please enable JavaScript. Game Courier makes use of JavaScript for displaying legal moves, for moving pieces by touch or mouse, for updating time clocks, and for updating the page when it is your turn again.

Viewing Game

Greg Strong has resigned.


8
7
6
5
4
3
2
1
	a	b	c	d	e	f	g	h

Fischer Random Chess

White:

Black:

41... resign

Orientation:

Scale:

Render as:

Shape:

Piece Set:

Colors:

Rules of Fischer Random Chess

King

Queen

Rook

Bishop

Knight

Pawn

Fischer Random Chess is played just like Chess except as follows:

The starting position is randomized with the following restrictions:

Pawns are placed where they normally start in Chess.
All remaining White pieces go on the first rank.
The White King goes between the two Rooks.
The White Bishops are placed on opposite color squares.
The last rank is filled with Black pieces that match the White pieces file-for-file.

A player may castle once per game under the following conditions:

Unmoved: The King and the castling Rook must not have moved before in the game, including castling.
Unattacked: All of the squares between the King's initial and final squares (including the initial and final squares) must not be under attack by any opposing piece.
Vacant: All the squares between the King's initial and final squares (including the final square), and all of the squares between the Rook's initial and final squares (including the final square), must be vacant except for the King and castling Rook.

When castling, the King and Rook always go to the same spaces they would go to in FIDE Chess.

When the Rook began on the a-side of the King, they go to the spaces usual for Queen-side castling.
When the Rook began on the h-side of the King, they go to the spaces usual for King-side castling.

Notation

You should be aware that Game Courier's notation is not identical with standard Chess notation. Game Courier has been designed for general use with any of several different Chess variants, and it accordingly uses a generic system of notation. This system is described in detail in the User's Guide. Here are the basics you need to know for Chess. Move a piece by writing its present coordinate, a hyphen, and its destination coordinate. For example, "e2-e4". There is no special operator for captures. A hyphen should be used even when a piece is captured. To signal to your opponent what piece you moved, and to provide an extra bit of error checking on the move you enter, you may include Game Courier's notation for the piece before the move. For example, "P e2-e4". Note that Game Courier uses uppercase letters for White pieces and lowercase for Black pieces. Black could enter "p e7-e5" for a move but not "P e7-e5".

This preset enforces the rules. It also automates en passant and castling. To capture by en passant, just move your Pawn to its destination. If it is a legal en passant move, your opponent's Pawn will be automatically captured.

To castle, move either your King or your Rook, but not both, to where it must go to castle. This move should be an otherwise illegal move. Either the King should move two or more spaces, or the King or Rook should hop over or capture the other. If you move your King only one space or move your Rook only across empty spaces, then your move will not count as castling. Once you have made half the castling move, the other piece will automatically move into place.

All promotions must be done explicitly. After moving your Pawn to the last rank, tack a semicolon to your Pawn move and add the new piece to the Pawn's space. For example, "P f7-f8; Q-f8".

How to Move Pieces

To enable moving by mouse or touch, you should enable JavaScript. Even without JavaScript enabled, you can still move pieces by entering your moves in the Moves field, using full algebraic notation.

Full Algebraic Notation

Algebraic notation identifies each space by a coordinate that begins with its file label and ends with its rank label. On the Chess board, files go up and down from one player to the other, and ranks go from left to right. In most games, files are represented by letters, and ranks are represented by numbers, but there is no fixed rule requiring this for all games, and some games, such as Shogi, reverse this convention. If you look at the diagram, you will usually see the file labels going from left to right and the file labels going up and down. And if you hover your mouse over a space, you will normally see the name of the coordinate appear in a tooltip.

It is not uncommon to see algebraic notation being used for Chess, but it is often in an abbreviated format that requires you to know both the rules of the game and the current position to know exactly which piece moves where. For example, the notation "Ne6" indicates that a Knight is moving to e6, but it doesn't indicate which Knight, and it doesn't specify where the Knight is coming from. To figure this out, you need to know how a Knight moves and which Knight on the board can make a legal move to e6.

Although rules may be programmed for individual games, Game Courier itself does not know the rules of any game, and it is unable to parse abbreviated algebraic notation. Therefore, it relies on full algebraic notation, which completely specifies the move without requiring any knowledge of the game's rules or the current position. The most usual type of full algebraic notation indicates the piece that is moving by its label, the space it is moving from, and the space it moving to. In Chess, a typical first move might be written as "P e2-e4". When you hover your mouse over a piece, you will normally see the piece label followed by the coordinate for the space, and when you hover it over an empty space, you will normally see the coordinate label. Including the piece label in your notation allows Game Courier to check that the piece you're moving is the right one, and it makes game notation easier to follow, but it is not mandatory.

You may promote a piece by including a promotion move after your regular move. A promotion move has a piece go directly to a coordinate. Here is an example: "p e7-e8; q-e8".

You may remove a piece from a space by adding an @ to the space or by omitting the destination coordinate. For example, both "@-e4" and "e4-" would remove the piece on "e4". This is useful for en passant when you are playing a game that does not handle this automatically. For example, "P d5-e6; e5-" removes the Pawn on e5 after a Pawn moves from d5 to e6.

You will not need to remove spaces for most games, but if you should need to, you can do this by omitting the first coordinate in a move. For example, "-e4" would remove e4 from the board. To add or return a space to the board, you may add an @ or any other piece to it.

Available Pieces

Pieces are represented by labels, usually using uppercase letters for White and lowercase letter for Black. When you enter a move or specify the starting position for a game, you should remember that piece labels are case-sensitive. Many piece sets are available for use with Game Courier, and this table shows you which pieces belong to the piece set you are currently using.

The inclusion of a piece does not indicate that it is used in the game you are playing. But if your game uses pieces not included here, you should choose a different piece set.

Credits

This preset uses the Abstract settings file for Fischer Random Chess, which was made by Fergus Duniho.

Game Courier was created, programmed and written by Fergus Duniho.

WWW Page Created: 15 August 2001

Kibbitzing Etiquette

Kibbitzing is the practice of commenting on a game you are not playing. In commenting on a game, please follow these rules of etiquette.

(1) If you notice that someone has made an illegal move, please mention it. Some Game Courier presets cannot enforce rules, but Game Courier does enable players to take back any previous move. Details on how to take back a move are provided in the User's Guide, linked to above the board.

(2) Unless otherwise specifically asked to, do not offer hints or suggestions to players on what moves they should make. In general, avoid coaching comments.

(3) Once a game is over, it should be alright to offer your analysis of the game and your specific comments on what moves players should have made. If some players don't want this, they may mention it in the Kibbitzing section, and you should honor this request by not commenting on the game.

(4) Be polite. At the appropriate time, offer any criticism you have in a constructive manner. Avoid heckling players for bad moves.

(5) Don't spam this space with irrelevant comments. If you have a comment about Game Courier, rather than about the specific game you're viewing, please post it on Game Courier's Index page to give it.