Chess notation cheat-sheet (for new readers)
Pieces: K king · Q queen · R rook · B bishop · N knight · (a pawn move has no letter)
Actions: x takes · + check · # mate · O-O short castles · O-O-O long castles · e8=Q pawn promotes to queen
Annotations: ! good move · !! brilliant · ? mistake · ?? blunder
Russian Game chess puzzles: reading the Qe2 alignment on the e-file
After 3.Nxe5 Nxe4 4.Qe2, both knights still stand on the e-file. White's own knight on e5 stands between the black knight on e4 and the black king on e8, so the e4-knight is not absolutely pinned to the king. Check which piece leaves the file before calling Nc6 a discovered check: 4...d6 is a pawn move and leaves the e4-knight blocking the line.
You will meet this position in the drills from both sides: from either side, trace the pieces blocking the e-file before calculating a check or a queen move. The puzzles are real, computer-verified positions from real games, filtered to this opening, so the e-file tactics show up the way it does in actual games rather than as a single textbook line.
Counting the attack in Stafford and Cochrane Russian Game chess puzzles
Some puzzles in this set hand material back for speed, and the skill is counting the attack instead of the pawns. The Stafford runs 3.Nxe5 Nc6 4.Nxc6 (the knight captures on c6) dxc6, after which Black's pieces pile onto f2 and h2. When you see the black knight hop to g4, the queen swing to h4, and a bishop on c5 aimed at f2, check for the ...Nxf2 break before defending on autopilot. The Cochrane goes the other way with 4.Nxf7, pulling the king out so White can chase it.
The hook for practice is the calculation, not the name. These positions reward reading three or four forcing moves to the end, so treat each one as a counting exercise: which check or capture comes with tempo, and does the net actually close. The rating slider runs from about 400 to 2400 at a 75 to 80 percent solve rate, so the attacking lines scale to your level.
Symmetry breaks first: the moment copying stops working
After 3.Nxe5 Nxe4 4.Qe2, do not assume that the black knight is pinned or that every reply permits Nc6+. Count the blockers on the e-file and the knight's actual targets in the resulting position. A move is a discovered check only if it opens an uninterrupted attack on the king.
Spotting these faster is the point of repetition. As you drill, group what you see by motif rather than by move order: the e-file alignment, the Qe2 versus Qe7 tug, the Nd5 fork, and a correctly timed Nc6+ shot. Each puzzle ships with three free hints, the first naming the motif and the second pointing to the piece, and a third giving the move, so you can train the recognition step without uncovering the full answer.