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H. G. Muller wrote on Sat, Jan 15, 2022 01:30 PM UTC:

This error is weird: the error message obviously comes from the GAME code used to automate the preset, from the move parser. But it seems thise is called in an unexpected context: Game Courier tries to feed the game history to the code in the Post-Move sections twice. And the second time the position has already been changed from the initial one to some weird one, which indeed has a Z on g4.

For debugging I added a statement

printr $space

at the end of the Pre-Game section. When I then use the preset in Play mode, and play the given game, the page that complains about the error contains two dumps of the $space array. The first is the initial position (as expected), but the second is

Array
(
    [a12] => d
    [b12] => l
    [c12] => u
    [d12] => z
    [e12] => o
    [f12] => q
    [g12] => k
    [h12] => o
    [i12] => z
    [j12] => u
    [k12] => l
    [l12] => d
    [a11] => r
    [b11] => m
    [c11] => n
    [d11] => b
    [e11] => a
    [f11] => y
    [g11] => y
    [h11] => a
    [i11] => b
    [j11] => n
    [k11] => m
    [l11] => r
    [a10] => x
    [b10] => i
    [c10] => e
    [d10] => g
    [e10] => s
    [f10] => c
    [g10] => c
    [h10] => s
    [i10] => g
    [j10] => e
    [k10] => i
    [l10] => x
    [a9] => p
    [b9] => p
    [c9] => p
    [d9] => p
    [e9] => p
    [f9] => p
    [g9] => @
    [h9] => p
    [i9] => p
    [j9] => p
    [k9] => p
    [l9] => p
    [a8] => @
    [b8] => @
    [c8] => @
    [d8] => @
    [e8] => @
    [f8] => @
    [g8] => @
    [h8] => @
    [i8] => @
    [j8] => @
    [k8] => @
    [l8] => @
    [a7] => @
    [b7] => @
    [c7] => @
    [d7] => @
    [e7] => @
    [f7] => @
    [g7] => p
    [h7] => @
    [i7] => @
    [j7] => @
    [k7] => @
    [l7] => @
    [a6] => @
    [b6] => @
    [c6] => P
    [d6] => @
    [e6] => @
    [f6] => @
    [g6] => P
    [h6] => @
    [i6] => @
    [j6] => @
    [k6] => @
    [l6] => @
    [a5] => @
    [b5] => @
    [c5] => @
    [d5] => @
    [e5] => A
    [f5] => P
    [g5] => @
    [h5] => @
    [i5] => @
    [j5] => @
    [k5] => @
    [l5] => @
    [a4] => P
    [b4] => P
    [c4] => @
    [d4] => P
    [e4] => P
    [f4] => @
    [g4] => Z
    [h4] => P
    [i4] => P
    [j4] => P
    [k4] => P
    [l4] => P
    [a3] => X
    [b3] => I
    [c3] => E
    [d3] => G
    [e3] => S
    [f3] => C
    [g3] => C
    [h3] => S
    [i3] => G
    [j3] => E
    [k3] => I
    [l3] => X
    [a2] => R
    [b2] => M
    [c2] => N
    [d2] => @
    [e2] => A
    [f2] => Y
    [g2] => Y
    [h2] => A
    [i2] => B
    [j2] => N
    [k2] => M
    [l2] => R
    [a1] => D
    [b1] => L
    [c1] => U
    [d1] => Z
    [e1] => O
    [f1] => Q
    [g1] => K
    [h1] => O
    [i1] => @
    [j1] => U
    [k1] => L
    [l1] => D
)

This is neither the initial nor the current position, although it does have some characteristics of the current position.

Perhaps Fergus can shed some light on how the Pre-Game section could be executed twice when entering a single move in Play mode.


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