Real puzzles from rated games · median rating 1822 · solved 114,941,007 times
Difficulty 1600–1999
These are quiet move puzzles rated 1600–1999, the Challenging level on this site. They come from real rated games: 58,114 puzzles, median rating 1822, solved 114,941,007 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 solutions at this level are built.
How the solutions work · counted by a rules engine
What a typical quiet move solution looks like
Sample: 2,000 quiet move puzzles at challenging level (3.4% of all 58,114).
31.2% need 2 solver moves, 44.4% need 3 solver moves, 15.9% need 4 solver moves, 8.6% need 5 or more solver moves. Median rating: 1826 for the shortest solutions, 1811 for the longest.
34.4% open with a pawn move. The first move captures in 18% and gives check in 10%; 2.2% end in checkmate, 11.2% involve a sacrifice, 51.8% have White to move.
18%first move captures
10%first move gives check
2.2%end in checkmate
11.2%involve a sacrifice
How many moves does the solver need?
2 solver moves
31.2% · median rating 1826
3 solver moves
44.4% · median rating 1816
4 solver moves
15.9% · median rating 1834
5+ solver moves
8.6% · median rating 1811
Which piece plays the key move?
Key move by a pawn
34.4%
Key move by a rook
28%
Key move by a queen
11.4%
Key move by a bishop
10.2%
Key move by a knight
9.3%
Key move by the king
6.8%
What does the solver win?
Captures nothing along the line
30.9%
Most valuable capture: queen
23.4%
Most valuable capture: rook
18.1%
Most valuable capture: pawn
16.7%
Most valuable capture: bishop
7.2%
Most valuable capture: knight
3.8%
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)
43%
Up to 2 pawns’ worth
16.4%
3–4 points (about a minor piece)
18.2%
5–8 points (a rook or more)
16%
9 or more points (a queen’s worth)
6.6%
How much is left on the board?
28 or more pieces on the board
1.2%
21–27 pieces
14.2%
13–20 pieces
40%
12 pieces or fewer
44.6%
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: h5 (5.1%), g5 (4.2%), h4 (3.9%), g4 (3.7%), f4 (3.1%).
1.1
1
1.9
8
1
1.1
7
1.5
1.1
1.4
2.3
1.7
1.3
6
3
2.9
2.4
2.3
2.7
2.9
4.2
5.1
5
2.8
2.4
2
1.9
2.5
3.1
3.7
3.9
4
1.1
1.6
1.5
1.3
1.4
1.6
2.3
3
1.4
2
1.5
1
1.5
1.8
1.5
1.2
1.5
2
1
a
b
c
d
e
f
g
h
Counted from the same 2,000-puzzle sample. Squares under 1% are left blank.
Study positions
The most-solved quiet move puzzles, from each difficulty level. Play each one on the board, then open the answer for the full line.
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White to move · rating 1600 · solved 1,818 times
· 4 solver moves to find. The solver captures a queen.Reveal line
Opponent's last move: axb4
Solution: a5 → h3 → a6 → h2 → Kg2 → h1=Q+ → Kxh1
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White to move · rating 1609 · solved 2,349 times
· 4 solver moves to find. The solver captures 3 pieces (knight, pawn, queen).Reveal line