Here's one: Also, in line with direct mates and selfmates, a DPG always ends with a White move, and a…
There might be situations where there is more than a half-move gap between a DPG and a Self PG, even…
Improved version 1736.1 25.02.2025 a) DPG 3.5 (Defensive Proof Game A->B) b) Self PG 3.0 (Self Proof Game A->B: White…
In 2006, when my organisation implemented ERP (Oracle EBS), the "go-live"(as it's called) was delayed for about 6 months. And…
In selfmates, and to a somewhat lesser extent, in helpselfmates, mating move duals by black on his last move are…
More sloppiness on my part: After 1.Bc3!, there is no Zugzwang, but a threat with the same moves as the…
You're right, Juraj! I have sent a correction to Julia: 1.Kf1? (not Zz, but threat 2.Bh8, 3.Bh7P & h8Q/R#) Sc3!…
In line with Dmitri's explanation, which I agree with, both the solutions: 1.a3 2.d5 and 1.d5 2.a3 would be correct.…
The behaviour of the alphabetical index is now fixed!
The behaviour of the alphabetical index option suddenly changed! It has been disabled temporarily, till a fix is found.