Frohe Weihnachten
Schöni Wienacht
Merry Christmas
Zalig Kerstfeest
Feliz Navidad
Buon Natale
Joyeux Noël
З Рiздвом Христовым
С Рождеством
Христос се роди
メリークリスマス
圣诞节快乐
Glædelig Jul
Hyvää Joulua
God Jul
Euch allen wünsche ich ein frohes, ein schönes, ein ruhiges und besinnliches Weihnachtsfest 2018!
Vielleicht habt ihr ja heute oder morgen Zeit, Lust und Muße, zwischendurch eine kleine Beweispartie lösen?
Satoshi Hashimoto
Probleemblad 1999
Beweispartie in 9,5 Zügen (13+14)
Probleemblad 1999
Beweispartie in 9,5 Zügen (13+14)
Viel Spaß dabei, und lasst euch dabei das Weihnachtsgebäck schmecken!
A belated Merry Christmas to you, Thomas.
Satoshi’s shortie has a nice white theme, but it is unfortunate that the stipulation should be stated as ‘Proof game in exactly 9.5 moves’, since the position can be reached in 9.0 moves (with duals and no theme).
The only flaw is that there are solutions in 9.0 moves. IIRC, Satoshi published a version when the solution was printed which fixed this flaw.
I had not seen your comment, Joost, when I sent mine.
The version is P1000623 .
On the contrary, I feel that “Proof games in 9.5 turns” should always be understood as “exactly”, and furthermore half the point of this problem is why the 9.0-turn plan cannot work in 9.5 turns. I haven’t studied the mechanisms used in the “fixed” version, but I suspect they won’t feel like the same problem to me at all.