Henrik Juel: Completing the key isn't legal, 1.'Rd1'/'-bPc5'/'e8S'+, but omitting the promotion in the mating move is, 1.Sxe7+ Bxe7 2.'f8'#. Excellent joke. (2003-09-19)
James Malcom: A very witty joke Valladao! (2020-09-24)
A.Buchanan: Really like this joke (2020-09-25)
Henrik Juel: To see the illegality of completing 1.fxe8=S+?, note the captures:
Black captured fxDe, so [Pg7,h7] were captured on their files, while the other six missing black men were captured by white pawns
The illegality of completing 1.0-0-0,bxc6ep? is rather obvious (2020-09-26)
James Malcom: And for those you don't find it obvious: If the White king hasn't moved, then where did wRa5, and wBb8 if bPb5 has just done a double-step, come from? Neither can be promoted pieces, as White still has all eight pawns. Trying to finish castling and en passant therefore both produce illegal positions and thus cannot be the solution. (2020-09-26)
Henrik Juel: Continuing beating the dead horse...
How does the white player actually perform an entire move?
1.0-0-0+: Ke1-c1 and Ta1-d1
1.bxc6ep+: Pb5-c6 and remove sPc5
1.fxe8=S+: remove sYe8 and Pf7-e8 and replace wPe8 with wSe8 (three fractional actions)
2.f8=Y#: Pf7-f8 and replace wPf8 with wYf8
So a marginally better stipulation might be: 'White to move mates in less than 2 moves' (2020-09-26)
A.Buchanan: Hurray I've got the animation working! I agree with Henrik's stipulation. There is a dummy pawn on f8, but not by the Dummy Pawn rule. Instead it's the joke that does it. If Dummy Rule applied, the move would be full length! :) (2022-02-09)
A.Buchanan: All three tries are full #1.5 not as the solution currently has it #0.5. Really fine joke! (2020-09-25, hidden)
Henrik Juel: The legal mate could be written better:
1. Sxe7+! Lxe7 2. f8=B# (Omitting the promotion) (2020-09-26, hidden)
A.Buchanan: I've tried to set up some intermediate diagrams to allow us to show the animation, but the pieces seem to move even for words which are not moves (and marked italic/red). It's quite baffling. It's almost as if someone with privilege has gone in the background and assigned moves to those dead words. If so, that's extremely unhelpful. Gerd was quite active on this site for a month in German lockdown, for which I'm grateful, but one key task is still waiting: to empower the editors by documenting exactly how the animation decides what to do based on the diagram(s) and stipulation. (2020-09-27, hidden)
A.Buchanan: The PDB stipulation field should be non-text form to drive the animation. Where the stipulation is non-standard, there should be a Unicode representation of the original, and translations into German, English and French. But cannot overwrite any original non-standard stipulation, in my opinion, as it is part of the composer's work. (2020-09-27, hidden)
A.Buchanan: I no longer think this is Dummy Pawn: instead it's a truncated regular promotion move. (2022-01-26, hidden)
A.Buchanan: Hurray I've got the animation "working"! I know this *looks* like a dummy pawn promotion, but if the famous Dummy Pawn rule applied here, then W2 would constitute a full move, not a fractional one! :) This is a truncated orthodox promotion instead! (2022-02-09, hidden)
A.Buchanan: Hurray I've got the animation "working"! I agree with Henrik that this is #2. We end up with a dummy pawn on f8, but not by the Dummy Pawn rule. Instead it's the joke that does it. If Dummy Rule applied, the move would not be considered to be truncated! (2022-02-09, hidden) more ...
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Objective: record achievement of task. Promotion can be to either minor officer, but prefer to keep the "stem cell" to avoid arbitrary choice of non-standard material.
Henrik Juel: with wSd8 C+ Stelvio 1.0 (2023-03-19, hidden)
Henrik Juel: with wSd8
1.Pe2-e4 Sg8-f6 2.Ke1-e2 Sf6-d5 3.Pe4xd5 Pg7-g5 4.Pd5-d6 Bf8-h6 5.Pd6xc7 O-O 6.Pc7xb8=S Qd8-a5 7.Ke2-e3 Pg5-g4+ 8.Pf2-f4 Pg4xf3ep+ (2023-03-19, hidden) more ...
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Objective: record achievement of task. Promotion can be to any officer, but prefer to keep the "stem cell" to avoid arbitrary choice of non-standard material.
Henrik Juel: with wSb8 C+ Stelvio 1.0 (2023-03-19, hidden)
Henrik Juel: with wSb8
1.Pe2-e4 Sg8-f6 2.Ke1-e2 Sf6-d5 3.Pe4xd5 Pg7-g5 4.Pd5-d6 Bf8-h6
5.Pd6xc7 O-O 6.Pc7xb8=S Qd8-a5 7.Ke2-e3 Pg5-g4+ 8.Pf2-f4 Pg4xf3ep+ (2023-03-19, hidden) more ...
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Objective: record achievement of task. Promotion can be to any officer, but prefer to keep the "stem cell" to avoid arbitrary choice of non-standard material.
Henrik Juel: with wSc8 C+ Stelvio 1.0 (2023-03-19, hidden)
Henrik Juel: with wSc8
1.Pd2-d4 Sg8-f6 2.Ke1-d2 Sf6-e4+ 3.Kd2-e3 Se4-c5 4.Pd4xc5 Pg7-g5 5.Pc5-c6 Bf8-h6 6.Pc6xb7 O-O 7.Pb7xc8=S Pg5-g4+ 8.Pf2-f4 Pg4xf3ep+ (2023-03-19, hidden) more ...
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Objective: record achievement of task. Promotion can be to either minor officer, but prefer to keep the "stem cell" to avoid arbitrary choice of non-standard material.
Henrik Juel: with wSd8 C+ Stelvio 1.0 (2023-03-19, hidden)
Henrik Juel: with wSd8
1.Pd2-d4 Sb8-c6 2.Ke1-d2 Sc6-e5 3.Pd4xe5 Sg8-f6 4.Pe5xf6 Pg7-g5 5.Pf6xe7 Bf8-h6 6.Pe7xd8=S O-O 7.Kd2-e3 Pg5-g4+ 8.Pf2-f4 Pg4xf3ep+ (2023-03-19, hidden) more ...
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Objective: record achievement of task. Promotion can be to either minor officer, but prefer to keep the "stem cell" to avoid arbitrary choice of non-standard material.
Henrik Juel: with wSd8 C+ Stelvio 1.0 (2023-03-19, hidden)
Henrik Juel: with wSd8
1.Pf2-f4 Pe7-e6 2.Pf4-f5 Bf8-c5 3.Pf5-f6 Sg8-e7 4.Pf6xe7 Bc5-b6 5.Pe7xd8=S Pc7-c5 6.Ke1-f2 O-O 7.Kf2-e3 Pc5-c4+ 8.Pd2-d4 Pc4xd3ep+ (2023-03-19, hidden) more ...
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Objective: record achievement of task. Promotion can be to either minor officer, but prefer to keep the "stem cell" to avoid arbitrary choice of non-standard material.
Henrik Juel: With wSf8, C+ Stelvio 1.0 (2023-03-19, hidden)
Henrik Juel: With wSf8
1.Pf2-f4 Pd7-d5 2.Pf4-f5 Bc8-d7 3.Pf5-f6 Bd7-c6 4.Pf6xe7 Sb8-d7 5.Pe7xf8=S Qd8-g5 6.Ke1-f2 O-O-O 7.Kf2-f3 Pd5-d4+ 8.Pe2-e4 Pd4xe3ep+ (2023-03-19, hidden) more ...
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