a b c d e f g h

The white royalties swapped place, requiring tight maneuvers during which the black units had to get captured somehow. Precisely, the black Pg7 has been captured by 5. Kxg2, while the bl. Rh8 has been captured by 12. Nxg1. Here is a proof game:

1. g4 h5 2. Nf3 hxg4 3. Bh3 g3 4. Kf1 g2 5. Kxg2 Rh6 6. Qg1 Rg6 7. Kf1 Na6 8. Ke1 Nb8 9. Kd1 Na6 10. Qe1 Nb8 11. Bf1 Rg1 12. Nxg1.

Observe that the following try: 1. g4 h5 2. Bh3 Rh6 3. Kf1 Rf6 4. Kg2 Rf3 5.Nxf3 hxg4 6. Qg1 g3 7. Kf1 g2 8. Ke1 Na6 9. Kd1 Nb8 10. Qe1 g1=Q 11. Bf1 ?? 12. Nxg1 fails because Black lacks a waiting 11th move.

[Joost de Heer]

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