Difficult test suites

[peter]

[pgn][Event "64 Shakhm. Obozrenye 1987"]
[Site "; 64 Shakhm. Obozrenye no.15("]
[Date "1987.??.??"]
[Round "?"]
[White "Petrov=D"]
[Black "(+0104.24d3c5) PH U2"]
[Result "1-0"]
[WhiteFideId "-1"]
[BlackFideId "-1"]
[SetUp "1"]
[FEN "8/1p2N3/p1n5/pPk5/R7/P2K4/6p1/8 w - - 0 1"]
[PlyCount "9"]
[GameId "2301022241248037"]
[EventDate "1987.??.??"]

{source: 64 Shakhm. Obozrenye no.15(782) 8/1987; U2: Garcia=M Estudios Artisticos de Ajedrez - VIII-22 2012 posthumous: Petrov=D; composed 1975} 1. Rc4+ Kxb5 $1 2. Nxc6 (2. a4+ $1 {<cook MG>} Kb6 3. Nd5+ Ka7 4. Rc1) 2... g1=Q 3. Na7+ $1 Qxa7
[/pgn]
Cut at the position of the diagram for those who want to puzzle. Might be #22 or less from 3rd, from original starting position about #35 because of 1...Kd6 instead of ...Kxd5, regards

[Damir]

[d]7q/8/Q7/8/8/1p6/1k1N3P/6BK w - - 1 5

[Damir]

Can you find 2 brilliant moves for White that wins the game? Don't use the engine.

[Ajedrecista]

Hello:

[d]7q/8/Q7/8/8/1p6/1k1N3P/6BK w - - 1 5

Can you find 2 brilliant moves for White that wins the game? Don't use the engine.

I got 1.- Bd4+, Qxd4; 2.- Qa1+, Kxa1; 3.- Nxb3+ (forking K and Q) on my own. Once you see the idea, Qa1+ can be played first with the same idea: 1.- Qa1+, Kxa1; 2.- Bd4+, Qxd4; 3.- Nxb3+. Sure that in the second solution, there is also 2.- ..., b2; 3.- Bxh8 and the black pawn is pinned and will be captured to avoid the queening.

Regards from Spain.

Ajedrecista.

[Damir]

Yes that's the moves. Well done on the solution.

[Damir]

[d]k1b5/Pp1p4/1P1Pp3/4Pp2/5Pp1/6P1/P6P/6K1 w - - 1 5

[Damir]

White to play. How to continue?

[peter]

That's a classical one again

https://www.yacpdb.org/#search/azFiNVwv ... LzEvMA==/1

[Paloma]

[d]8/qp6/p7/pk6/2R5/P2K4/8/8 w - - 1 1

Mate in 22!
1.a4 Kb6
2.Rc8 Qb8 (or Qa8)
3.Rb8 Ka7
4.Rg8 b5
5.Kd4 bxa4
6.Kc5 Kb7
7.Rg4 a3
8.Ra4 15#