Real puzzles from rated games · median rating 1372 · solved 42,411,977 times
Opening: French Defence
These opening tactics puzzles were set in games that began as the French Defence: 17,971 puzzles, median rating 1372, solved 42,411,977 times. The twelve below are among the most-solved of them; try each on the board, then read the numbers further down to see how the solutions are built.
How the solutions work · counted by a rules engine
What a typical opening tactics solution looks like
Sample: 2,000 opening tactics puzzles from French Defence games (11.1% of all 17,971).
22.2% need 1 solver move, 54.6% need 2 solver moves, 20.1% need 3 solver moves, 2.2% need 4 solver moves, 1% need 5 or more solver moves. Median rating: 894 for the shortest solutions, 2182 for the longest.
38% open with a queen move. The first move captures in 52.3% and gives check in 58.8%; 28.6% end in checkmate, 19.6% involve a sacrifice, 60.2% have White to move.
52.3%first move captures
58.8%first move gives check
28.6%end in checkmate
19.6%involve a sacrifice
How many moves does the solver need?
1 solver move
22.2% · median rating 894
2 solver moves
54.6% · median rating 1361
3 solver moves
20.1% · median rating 1715
4 solver moves
2.2% · median rating 2141
5+ solver moves
1% · median rating 2182
Which piece plays the key move?
Key move by a queen
38%
Key move by a bishop
25.6%
Key move by a knight
23.6%
Key move by a pawn
7.2%
Key move by a rook
4.2%
Key move by the king
1.4%
What does the solver win?
Most valuable capture: queen
26%
Most valuable capture: knight
17.9%
Most valuable capture: bishop
17.2%
Captures nothing along the line
16.1%
Most valuable capture: pawn
15.8%
Most valuable capture: rook
7%
Material balance along the whole line, counting every capture by both sides (pawn 1, minor piece 3, rook 5, queen 9):
No material gained (mating or positional)
23.2%
Up to 2 pawns’ worth
18.8%
3–4 points (about a minor piece)
37%
5–8 points (a rook or more)
15.9%
9 or more points (a queen’s worth)
5%
How much is left on the board?
28 or more pieces on the board
51.5%
21–27 pieces
48.5%
13–20 pieces
0%
12 pieces or fewer
0%
How it is counted: every puzzle in the sample is replayed move by move with a chess rules engine. A sacrifice means a piece that is captured on the very next ply and was worth more than what it captured itself (pawn 1, minor piece 3, rook 5, queen 9). Sample of 2,000 puzzles. Percentages are shares of the sample.
Where it happens
Where the key move lands
Where the solver’s first move ends, drawn from their own side (rank 1 is their back rank). Busiest squares: h7 (11.1%), f7 (9.5%), a4 (7.5%), f6 (5.9%), b5 (4.3%).
1.7
1.2
8
1.5
1
2
9.5
2.8
11.1
7
3.9
3.1
1.9
5.9
2.4
6
4.3
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3.1
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7.5
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1
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4
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1.1
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1
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a
b
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d
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g
h
Counted from the same 2,000-puzzle sample. Squares under 1% are left blank.
Study positions
The most-solved opening tactics puzzles, from each difficulty level. Play each one on the board, then open the answer for the full line.
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Black to move · rating 1012 · solved 2,056 times
· Mate in 1. It ends in checkmate on e3 with the queen.Reveal line
Opponent's last move: Kd2
Solution: Qe3#
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White to move · rating 1085 · solved 1,620 times
· Mate in 2. It ends in checkmate on g7 with the queen. The solver captures a pawn.Reveal line
Opponent's last move: Kg6
Solution: Qg4+ → Kh7 → Qxg7#
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Black to move · rating 1197 · solved 2,155 times
· 2 solver moves to find. The solver captures 2 pieces (knight, bishop).Reveal line
Opponent's last move: Bg5
Solution: Nxf3+ → gxf3 → Qxg5
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Black to move · rating 1291 · solved 2,605 times
· Mate in 3. It ends in checkmate on h2 with the rook. It gives up the knight (Ng3+) on the way. The solver captures 2 pieces (pawn, knight).Reveal line
Opponent's last move: Qd2
Solution: Ng3+ → hxg3 → hxg3+ → Nh2 → Rxh2#
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White to move · rating 1322 · solved 2,828 times
· 2 solver moves to find. The solver captures a bishop.Reveal line
Opponent's last move: dxe4
Solution: Qa4+ → Bd7 → Qxb4
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White to move · rating 1348 · solved 3,357 times
· Mate in 2. It ends in checkmate on h6 with the bishop.Reveal line
Opponent's last move: Ng6
Solution: Qh7+ → Kf8 → Bh6#
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Black to move · rating 1572 · solved 2,473 times
· 2 solver moves to find. The solver captures 2 pieces (bishop, knight).Reveal line
Opponent's last move: Bxg6
Solution: fxg6 → Qxg6 → hxg5
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White to move · rating 1628 · solved 890 times
· Mate in 1. It ends in checkmate on f7 with the rook. The solver captures a pawn.Reveal line
Opponent's last move: Kf8
Solution: Rxf7#
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White to move · rating 1643 · solved 1,055 times
· Mate in 3. It ends in checkmate on h7 with the queen. It gives up the rook (Rh8+) on the way.Reveal line
Opponent's last move: Qxd4
Solution: Rh8+ → Kxh8 → Qh5+ → Kg8 → Qh7#
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White to move · rating 1679 · solved 1,652 times
· 2 solver moves to find. The solver captures a bishop.Reveal line
Opponent's last move: Be5
Solution: Qh5+ → Kg8 → Qxe5
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Black to move · rating 2005 · solved 401 times
· 2 solver moves to find. The solver captures 2 pieces (bishop, knight).Reveal line
Opponent's last move: Bxh7+
Solution: Kxh7 → Ng5+ → Qxg5
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White to move · rating 2127 · solved 366 times
· 3 solver moves to find. The solver captures a knight.Reveal line
Opponent's last move: Kf8
Solution: Qh6+ → Ke7 → Nxe4 → dxe4 → Qf6+
Positions and move sequences come from real rated games (CC0 data). Engine evaluations, where shown, are stored evaluations of the position (CC0).