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 c2-c4, p is #p, o is c2

space c2 is P

0 P c2-c4 27 61 59 61 59 61 59 29

11011 111101 111011 111101 111011 111101 111011 11101

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

space e7 is p

1 p e7-e6 27 61 59 61 59 61 59 29

11011 111101 111011 111101 111011 111101 111011 11101

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

space d2 is P

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

11011 111101 111011 111101 111011 111101 111011 11101

mv is d8-f6, p is #p, o is d8

space d8 is d1

3 d1 d8-f6 27 61 59 61 59 61 59 29

11011 111101 111011 111101 111011 111101 111011 11101

5 one bits in var d1

11011 111101 111011 10100 111011 111101 111011 11101

q end d8-f6 27 61 59 20 59 61 59 29

bb end d8-f6 27 61 59 20 59 61 59 29

bw end d8-f6 27 61 59 20 59 61 59 29

firstr is a1, and lastr is h1

r d8-f6 27 61 59 20 59 61 59 29

first 27 61 59 20 59 61 59 29

mv is N e1-f3, p is N, o is e1

space e1 is e1

4 e1 N e1-f3 27 61 59 20 59 61 59 29

11011 111101 111011 10100 111011 111101 111011 11101

5 one bits in var e1

11011 111101 111011 10100 1 111101 111011 11101

q end N e1-f3 27 61 59 20 1 61 59 29

bb end N e1-f3 27 61 59 20 1 61 59 29

bw end N e1-f3 27 61 59 20 1 61 59 29

firstr is a1, and lastr is h1

r N e1-f3 27 61 59 20 1 61 59 29

first 27 61 59 20 1 61 59 29

mv is b7-b6, p is #p, o is b7

space b7 is p

5 p b7-b6 27 61 59 20 1 61 59 29

11011 111101 111011 10100 1 111101 111011 11101

mv is B c1-f4, p is B, o is c1

space c1 is c1

6 c1 B c1-f4 27 61 59 20 1 61 59 29

11011 111101 111011 10100 1 111101 111011 11101

5 one bits in var c1

11011 111101 10 10100 1 111101 111011 11101

q end B c1-f4 27 61 2 20 1 61 59 29

bb end B c1-f4 25 61 2 20 1 61 57 29

bw end B c1-f4 25 61 2 20 1 61 57 29

firstr is a1, and lastr is h1

r B c1-f4 25 61 2 20 1 61 57 29

first 25 61 2 20 1 61 57 29

11001 111101 10 10100 1 111101 111001 11101

q end B c1-f4 25 61 2 20 1 61 57 29

bb end B c1-f4 25 61 2 20 1 61 57 29

bw end B c1-f4 25 61 2 20 1 61 57 29

firstr is a1, and lastr is h1

r B c1-f4 25 61 2 20 1 61 57 29

first 25 61 2 20 1 61 57 29

mv is c8-b7, p is #p, o is c8

space c8 is c1

7 c1 c8-b7 25 61 2 20 1 61 57 29

11001 111101 10 10100 1 111101 111001 11101

1 one bits in var c1

11001 111101 10 10100 1 111101 111001 11101

q end c8-b7 25 61 2 20 1 61 57 29

bb end c8-b7 25 61 2 20 1 61 57 29

bw end c8-b7 25 61 2 20 1 61 57 29

firstr is a1, and lastr is h1

r c8-b7 25 61 2 20 1 61 57 29

first 25 61 2 20 1 61 57 29

mv is N f1-d2, p is N, o is f1

space f1 is f1

8 f1 N f1-d2 25 61 2 20 1 61 57 29

11001 111101 10 10100 1 111101 111001 11101

5 one bits in var f1

11001 111101 10 10100 1 1 111001 11101

q end N f1-d2 25 61 2 20 1 1 57 29

bb end N f1-d2 25 61 2 20 1 1 57 29

bw end N f1-d2 25 61 2 20 1 1 57 29

firstr is a1, and lastr is h1

r N f1-d2 25 61 2 20 1 1 57 29

first 25 61 2 20 1 1 57 29

11000 111100 10 10100 1 1 111000 11100

q end N f1-d2 24 60 2 20 1 1 56 28

bb end N f1-d2 24 60 2 20 1 1 56 28

bw end N f1-d2 24 60 2 20 1 1 56 28

firstr is a1, and lastr is h1

r N f1-d2 24 60 2 20 1 1 56 28

first 24 60 2 20 1 1 56 28

mv is f8-g6, p is #p, o is f8

space f8 is f1

9 f1 f8-g6 24 60 2 20 1 1 56 28

11000 111100 10 10100 1 1 111000 11100

1 one bits in var f1

11000 111100 10 10100 1 1 111000 11100

q end f8-g6 24 60 2 20 1 1 56 28

bb end f8-g6 24 60 2 20 1 1 56 28

bw end f8-g6 24 60 2 20 1 1 56 28

firstr is a1, and lastr is h1

r f8-g6 24 60 2 20 1 1 56 28

first 24 60 2 20 1 1 56 28

mv is e2-e3, p is #p, o is e2

space e2 is P

10 P e2-e3 24 60 2 20 1 1 56 28

11000 111100 10 10100 1 1 111000 11100

mv is g6-f4, p is #p, o is g6

space g6 is f1

11 f1 g6-f4 24 60 2 20 1 1 56 28

11000 111100 10 10100 1 1 111000 11100

1 one bits in var f1

11000 111100 10 10100 1 1 111000 11100

q end g6-f4 24 60 2 20 1 1 56 28

bb end g6-f4 24 60 2 20 1 1 56 28

bw end g6-f4 24 60 2 20 1 1 56 28

firstr is a1, and lastr is h1

r g6-f4 24 60 2 20 1 1 56 28

first 24 60 2 20 1 1 56 28

mv is e3-f4, p is #p, o is e3

space e3 is P

12 P e3-f4 24 60 2 20 1 1 56 28

11000 111100 10 10100 1 1 111000 11100

mv is e8-d6, p is #p, o is e8

space e8 is e1

13 e1 e8-d6 24 60 2 20 1 1 56 28

11000 111100 10 10100 1 1 111000 11100

1 one bits in var e1

11000 111100 10 10100 1 1 111000 11100

q end e8-d6 24 60 2 20 1 1 56 28

bb end e8-d6 24 60 2 20 1 1 56 28

bw end e8-d6 24 60 2 20 1 1 56 28

firstr is a1, and lastr is h1

r e8-d6 24 60 2 20 1 1 56 28

first 24 60 2 20 1 1 56 28

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

space b1 is b1

14 b1 R b1-c1 24 60 2 20 1 1 56 28

11000 111100 10 10100 1 1 111000 11100

4 one bits in var b1

11000 1000 10 10100 1 1 111000 11100

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

queen before R b1-c1 16 8 2 20 1 1 32 8

queen after R b1-c1 16 8 2 4 1 1 32 8

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

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

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

first 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

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

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

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

first 16 8 2 4 1 1 32 8

mv is d6-e4, p is #p, o is d6

space d6 is e1

15 e1 d6-e4 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var e1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end d6-e4 16 8 2 4 1 1 32 8

bb end d6-e4 16 8 2 4 1 1 32 8

bw end d6-e4 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is N d2-e4, p is N, o is d2

space d2 is f1

16 f1 N d2-e4 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var f1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end N d2-e4 16 8 2 4 1 1 32 8

bb end N d2-e4 16 8 2 4 1 1 32 8

bw end N d2-e4 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is b7-e4, p is #p, o is b7

space b7 is c1

17 c1 b7-e4 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var c1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end b7-e4 16 8 2 4 1 1 32 8

bb end b7-e4 16 8 2 4 1 1 32 8

bw end b7-e4 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is R h1-f1, p is R, o is h1

space h1 is h1

18 h1 R h1-f1 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var h1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end R h1-f1 16 8 2 4 1 1 32 8

bb end R h1-f1 16 8 2 4 1 1 32 8

bw end R h1-f1 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is c7-c5, p is #p, o is c7

space c7 is p

19 p c7-c5 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

mv is d4-d5, p is #p, o is d4

space d4 is P

20 P d4-d5 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

mv is e6-d5, p is #p, o is e6

space e6 is p

21 p e6-d5 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

mv is c4-d5, p is #p, o is c4

space c4 is P

22 P c4-d5 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

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

space e4 is c1

23 c1 e4-d5 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var c1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end e4-d5 16 8 2 4 1 1 32 8

bb end e4-d5 16 8 2 4 1 1 32 8

bw end e4-d5 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is a2-a4, p is #p, o is a2

space a2 is P

24 P a2-a4 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

mv is h8-f8, p is #p, o is h8

space h8 is h1

25 h1 h8-f8 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var h1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end h8-f8 16 8 2 4 1 1 32 8

bb end h8-f8 16 8 2 4 1 1 32 8

bw end h8-f8 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is a4-a5, p is #p, o is a4

space a4 is P

26 P a4-a5 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

mv is d7-d6, p is #p, o is d7

space d7 is p

27 p d7-d6 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

mv is a5-a6, p is #p, o is a5

space a5 is P

28 P a5-a6 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

mv is f8-e8, p is #p, o is f8

space f8 is h1

29 h1 f8-e8 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var h1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end f8-e8 16 8 2 4 1 1 32 8

bb end f8-e8 16 8 2 4 1 1 32 8

bw end f8-e8 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is Q a1-a3, p is Q, o is a1

space a1 is a1

30 a1 Q a1-a3 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var a1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end Q a1-a3 16 8 2 4 1 1 32 8

bb end Q a1-a3 16 8 2 4 1 1 32 8

bw end Q a1-a3 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is e8-e7, p is #p, o is e8

space e8 is h1

31 h1 e8-e7 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var h1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end e8-e7 16 8 2 4 1 1 32 8

bb end e8-e7 16 8 2 4 1 1 32 8

bw end e8-e7 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is R f1-e1, p is R, o is f1

space f1 is h1

32 h1 R f1-e1 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var h1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end R f1-e1 16 8 2 4 1 1 32 8

bb end R f1-e1 16 8 2 4 1 1 32 8

bw end R f1-e1 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is e7-e1, p is #p, o is e7

space e7 is h1

33 h1 e7-e1 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var h1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end e7-e1 16 8 2 4 1 1 32 8

bb end e7-e1 16 8 2 4 1 1 32 8

bw end e7-e1 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is N f3-e1, p is N, o is f3

space f3 is e1

34 e1 N f3-e1 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var e1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end N f3-e1 16 8 2 4 1 1 32 8

bb end N f3-e1 16 8 2 4 1 1 32 8

bw end N f3-e1 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is b8-e8, p is #p, o is b8

space b8 is b1

35 b1 b8-e8 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var b1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end b8-e8 16 8 2 4 1 1 32 8

bb end b8-e8 16 8 2 4 1 1 32 8

bw end b8-e8 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is B d1-c2, p is B, o is d1

space d1 is d1

36 d1 B d1-c2 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var d1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end B d1-c2 16 8 2 4 1 1 32 8

bb end B d1-c2 16 8 2 4 1 1 32 8

bw end B d1-c2 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is e8-e2, p is #p, o is e8

space e8 is b1

37 b1 e8-e2 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var b1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end e8-e2 16 8 2 4 1 1 32 8

bb end e8-e2 16 8 2 4 1 1 32 8

bw end e8-e2 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is K g1-f1, p is K, o is g1

space g1 is g1

38 g1 K g1-f1 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var g1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end K g1-f1 16 8 2 4 1 1 32 8

bb end K g1-f1 16 8 2 4 1 1 32 8

bw end K g1-f1 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is d5-c4, p is #p, o is d5

space d5 is c1

39 c1 d5-c4 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var c1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end d5-c4 16 8 2 4 1 1 32 8

bb end d5-c4 16 8 2 4 1 1 32 8

bw end d5-c4 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is B c2-h7, p is B, o is c2

space c2 is d1

40 d1 B c2-h7 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var d1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end B c2-h7 16 8 2 4 1 1 32 8

bb end B c2-h7 16 8 2 4 1 1 32 8

bw end B c2-h7 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is g8-h7, p is #p, o is g8

space g8 is g1

41 g1 g8-h7 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var g1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end g8-h7 16 8 2 4 1 1 32 8

bb end g8-h7 16 8 2 4 1 1 32 8

bw end g8-h7 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is R c1-c4, p is R, o is c1

space c1 is b1

42 b1 R c1-c4 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var b1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end R c1-c4 16 8 2 4 1 1 32 8

bb end R c1-c4 16 8 2 4 1 1 32 8

bw end R c1-c4 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is e2-b2, p is #p, o is e2

space e2 is b1

43 b1 e2-b2 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var b1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end e2-b2 16 8 2 4 1 1 32 8

bb end e2-b2 16 8 2 4 1 1 32 8

bw end e2-b2 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is Q a3-d3, p is Q, o is a3

space a3 is a1

44 a1 Q a3-d3 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var a1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end Q a3-d3 16 8 2 4 1 1 32 8

bb end Q a3-d3 16 8 2 4 1 1 32 8

bw end Q a3-d3 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is h7-g8, p is #p, o is h7

space h7 is g1

45 g1 h7-g8 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var g1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end h7-g8 16 8 2 4 1 1 32 8

bb end h7-g8 16 8 2 4 1 1 32 8

bw end h7-g8 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is Q d3-d6, p is Q, o is d3

space d3 is a1

46 a1 Q d3-d6 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var a1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end Q d3-d6 16 8 2 4 1 1 32 8

bb end Q d3-d6 16 8 2 4 1 1 32 8

bw end Q d3-d6 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is f6-d4, p is #p, o is f6

space f6 is d1

47 d1 f6-d4 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var d1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end f6-d4 16 8 2 4 1 1 32 8

bb end f6-d4 16 8 2 4 1 1 32 8

bw end f6-d4 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is R c4-d4, p is R, o is c4

space c4 is b1

48 b1 R c4-d4 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var b1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end R c4-d4 16 8 2 4 1 1 32 8

bb end R c4-d4 16 8 2 4 1 1 32 8

bw end R c4-d4 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

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

space c5 is p

49 p c5-d4 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

mv is Q d6-d4, p is Q, o is d6

space d6 is a1

50 a1 Q d6-d4 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var a1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end Q d6-d4 16 8 2 4 1 1 32 8

bb end Q d6-d4 16 8 2 4 1 1 32 8

bw end Q d6-d4 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is b2-b1, p is #p, o is b2

space b2 is b1

51 b1 b2-b1 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var b1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end b2-b1 16 8 2 4 1 1 32 8

bb end b2-b1 16 8 2 4 1 1 32 8

bw end b2-b1 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is Q d4-d7, p is Q, o is d4

space d4 is a1

52 a1 Q d4-d7 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var a1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end Q d4-d7 16 8 2 4 1 1 32 8

bb end Q d4-d7 16 8 2 4 1 1 32 8

bw end Q d4-d7 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is a8-e4, p is #p, o is a8

space a8 is a1

53 a1 a8-e4 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var a1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end a8-e4 16 8 2 4 1 1 32 8

bb end a8-e4 16 8 2 4 1 1 32 8

bw end a8-e4 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is Q d7-d8, p is Q, o is d7

space d7 is a1

54 a1 Q d7-d8 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var a1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end Q d7-d8 16 8 2 4 1 1 32 8

bb end Q d7-d8 16 8 2 4 1 1 32 8

bw end Q d7-d8 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is g8-h7, p is #p, o is g8

space g8 is g1

55 g1 g8-h7 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var g1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end g8-h7 16 8 2 4 1 1 32 8

bb end g8-h7 16 8 2 4 1 1 32 8

bw end g8-h7 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is Q d8-h4, p is Q, o is d8

space d8 is a1

56 a1 Q d8-h4 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var a1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end Q d8-h4 16 8 2 4 1 1 32 8

bb end Q d8-h4 16 8 2 4 1 1 32 8

bw end Q d8-h4 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is h7-g8, p is #p, o is h7

space h7 is g1

57 g1 h7-g8 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var g1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end h7-g8 16 8 2 4 1 1 32 8

bb end h7-g8 16 8 2 4 1 1 32 8

bw end h7-g8 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is Q h4-d8, p is Q, o is h4

space h4 is a1

58 a1 Q h4-d8 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var a1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end Q h4-d8 16 8 2 4 1 1 32 8

bb end Q h4-d8 16 8 2 4 1 1 32 8

bw end Q h4-d8 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is g8-h7, p is #p, o is g8

space g8 is g1

59 g1 g8-h7 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var g1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end g8-h7 16 8 2 4 1 1 32 8

bb end g8-h7 16 8 2 4 1 1 32 8

bw end g8-h7 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is Q d8-h4, p is Q, o is d8

space d8 is a1

60 a1 Q d8-h4 16 8 2 4 1 1 32 8

10000 1000 10 100 1 1 100000 1000

1 one bits in var a1

10000 1000 10 100 1 1 100000 1000

Array
(
    [0] => a1
    [1] => b1
    [2] => c1
    [3] => d1
    [4] => e1
    [5] => f1
)

q end Q d8-h4 16 8 2 4 1 1 32 8

bb end Q d8-h4 16 8 2 4 1 1 32 8

bw end Q d8-h4 16 8 2 4 1 1 32 8

first 16 8 2 4 1 1 32 8

mv is drawn, p is #p, o is drawn

Continue because drawn is drawn

Continue because mv is empty

firstrank is QRBBNNKR

Castling with Rook! h1 f1 b1 d1 h1 f1

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

The game is declared drawn.


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

Fischer Random Chess

White:

Black:

31... drawn

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.