4-6 move sequence puzzles (Intermediate)
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I believe your Stockfish analysis, but there is also the matter of what results you were exactly looking for. Just the best evaluation score? Win? Quickest mate?
Most solutions seem without duals but I see an alternate for the second puzzle though it probably wins slower: 1. Be6+ Kd8 (as per Stockfish) but now 2. Qb8+ Ke7 3. Qc7+ Ke8 (..Kxe5 .Re1+ and mate in two) 4. Re1 Be7 (for instance) 5. Qc8+ Bd8 6. Bd7++ queen win.
Arisktotle wrote:
I believe your Stockfish analysis, but there is also the matter of what results you were exactly looking for. Just the best evaluation score? Win? Quickest mate?
Most solutions seem without duals but I see an alternate for the second puzzle though it probably wins slower: 1. Be6+ Kd8 (as per Stockfish) but now 2. Qb8+ Ke7 3. Qc7+ Ke8 (..Kxe5 .Re1+ and mate in two) 4. Re1 Be7 (for instance) 5. Qc8+ Bd8 6. Bd7++ queen win.
You are commanded to find the BEST MOVE of the puzzles above. They are mixed with checkmates and advantages. I would say the best evaluation score is your goal and quickest way to checkmate.
OK, I know that this a common interpretation of 'best move' on chess.com. It is not an interpretation shared by problemists and it sometimes leads to strange consequences. But since you are the OP, it's your call!
Do you happen to have the full game for #3? I lost my rook once to the computer in a similar position, and that's a situation I'd like to study and document in more detail.
Sqod wrote:
Do you happen to have the full game for #3? I lost my rook once to the computer in a similar position, and that's a situation I'd like to study and document in more detail.
Not really, I know this game was indeed a weird one (I can give you a "clue" to how a position like this would arise). White's a-pawn most likey took on c5 somehow (blacks d-pawn was there). White's d-pawn took on c4 and created this blockading pawn structure. A king's indian variation is very possible here. I think through the exchange of both knights and 1 bishops from each side created this weird pawn structure.
Adam-Herwis wrote:
Not really, I know this game was indeed a weird one (I can give you a "clue" to how a position like this would arise). White's a-pawn most likey took on c5 somehow (blacks d-pawn was there). White's d-pawn took on c4 and created this blockading pawn structure. A king's indian variation is very possible here. I think through the exchange of both knights and 1 bishops from each side created this weird pawn structure.
OK, thanks. I don't believe I saved that game I lost, since I felt so foolish, but I should have, since it was a very instructive tactic to watch for. It was a Staunton-Cochrane Sicilian opening where as White I was attacking along the d-file with both rooks, then suddenly I found that my forward rook was cut off from defense while under attack, due to interference from Black's knight placed between my doubed rooks. Clever computer. And it didn't even know what "interference" was.
the amazing tactical things helped me a lot
amazing group of puzzles love how they cover a bunch of different situations
Your goal is to find the BEST MOVE. The move sequence "usually" applies to what "depth" or "ply" would be needed from the potential puzzle solver to solve these puzzles. There are checkmate puzzles and advantage puzzles involved. Notice to all puzzle solvers, these puzzles ONLY HAVE 1 SOLUTION. If you don't believe the move provided is the only solution then analyse the position using a chess engine before complaining or suggesting in the comments. These puzzles are ALL ANALYSED by Stockfish 7 and are regularly updated (Last updated October 12 2016):