Real puzzles from rated games · median rating 1096 · solved 24,977,837 times
Difficulty 600–1199
These are exposed king puzzles rated 600–1199, the Foundation level on this site. They come from real rated games: 18,557 puzzles, median rating 1096, solved 24,977,837 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 exposed king solution looks like
Sample: 2,000 exposed king puzzles at foundation level (10.8% of all 18,557).
93.4% need 3 solver moves, 6.2% need 4 solver moves. Median rating: 1089 for the shortest solutions, 1121 for the longest.
47% open with a rook move. The first move captures in 30.9% and gives check in 89.4%; 29.2% end in checkmate, 23.4% involve a sacrifice, 50.6% have White to move.
30.9%first move captures
89.4%first move gives check
29.2%end in checkmate
23.4%involve a sacrifice
How many moves does the solver need?
3 solver moves
93.4% · median rating 1089
4 solver moves
6.2% · median rating 1121
Which piece plays the key move?
Key move by a rook
47%
Key move by a queen
27.1%
Key move by a pawn
11.6%
Key move by a bishop
7%
Key move by a knight
5.7%
Key move by the king
1.6%
What does the solver win?
Most valuable capture: rook
40.9%
Most valuable capture: queen
27.4%
Captures nothing along the line
15%
Most valuable capture: bishop
7.5%
Most valuable capture: pawn
4.9%
Most valuable capture: knight
4.4%
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)
21.4%
Up to 2 pawns’ worth
8.4%
3–4 points (about a minor piece)
26.2%
5–8 points (a rook or more)
34.5%
9 or more points (a queen’s worth)
9.5%
How much is left on the board?
28 or more pieces on the board
1.4%
21–27 pieces
14.6%
13–20 pieces
56%
12 pieces or fewer
27.9%
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: f8 (6.9%), h8 (5.8%), g6 (5.1%), h6 (4.5%), h5 (4.4%).
3.2
2.8
3.5
3.8
3.3
6.9
2.4
5.8
8
2.2
1.3
1.9
2.3
4.1
3.9
3
7
1
1.4
2.5
1.8
2.6
4.4
5.1
4.5
6
1
2
1.9
2
2.5
4.4
5
1.2
1.3
4
3
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 exposed king 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 978 · solved 2,418 times
· 3 solver moves to find. The solver captures a rook.Reveal line
Opponent's last move: Ra7
Solution: Rg8+ → Ke7 → Rg7+ → Kd6 → Rxa7
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White to move · rating 986 · solved 2,265 times
· 3 solver moves to find. The solver captures 2 pieces (rook, knight).Reveal line
Opponent's last move: Rb6
Solution: Rxb6+ → Nxb6 → Rc6+ → Kd7 → Rxb6
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Black to move · rating 1121 · solved 16,684 times
· 3 solver moves to find. The solver captures a rook.Reveal line
Opponent's last move: Kh3
Solution: Rh6+ → Kg4 → Rg6+ → Kf5 → Rxg3
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White to move · rating 1121 · solved 3,706 times
· 3 solver moves to find. It gives up the rook (Rd8+) on the way. The solver captures a queen.Reveal line
Opponent's last move: Qf5
Solution: Qg8+ → Qf8 → Rd8+ → Kxd8 → Qxf8+
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Black to move · rating 1149 · solved 2,721 times
· Mate in 3. It ends in checkmate on h2 with the queen. The solver captures 2 pieces (pawn, bishop).Reveal line
Opponent's last move: Bxd6
Solution: Rxf2+ → Kh1 → Qh3+ → Bh2 → Qxh2#
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White to move · rating 1158 · solved 2,263 times
· 3 solver moves to find. The solver captures 3 pieces (pawn, rook, queen).Reveal line
Opponent's last move: Qg6
Solution: Rxc7+ → Re7 → Rxe7+ → Kxe7 → Qxg6
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White to move · rating 1161 · solved 2,272 times
· 3 solver moves to find. The solver captures a bishop.Reveal line
Opponent's last move: Kd6
Solution: Bxf4+ → Ke6 → Rc6+ → Kf7 → Rc7+
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Black to move · rating 1180 · solved 2,250 times
· 3 solver moves to find. The solver captures 2 pieces (rook, pawn).Reveal line
Opponent's last move: Rxf5
Solution: Rxf5 → d7 → Rd5+ → Kc3 → Rxd7
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Black to move · rating 1180 · solved 2,224 times
· 3 solver moves to find. It gives up the knight (Ng5+) on the way. The solver captures a queen.Reveal line
Opponent's last move: Qxg7+
Solution: Kf4 → Qh6+ → Ng5+ → Qxg5+ → Kxg5
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White to move · rating 1189 · solved 2,803 times
· 3 solver moves to find. It gives up the bishop (Bxf4+) on the way. The solver captures 3 pieces (pawn, pawn, bishop).Reveal line
Opponent's last move: Nf7
Solution: Bxf4+ → exf4 → Qxf4+ → Kh7 → Qxf6
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Black to move · rating 1191 · solved 2,588 times
· 3 solver moves to find. The solver captures a queen.Reveal line
Opponent's last move: b7
Solution: Qe2+ → Kc3 → Qc2+ → Kd4 → Qxc7
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Black to move · rating 1192 · solved 2,341 times
· 3 solver moves to find. It gives up the bishop (Bd2+) on the way. The solver captures a rook.Reveal line
Opponent's last move: Ne2
Solution: Rf8+ → Ke1 → Bd2+ → Kxd2 → Rxf1
Positions and move sequences come from real rated games (CC0 data). Engine evaluations, where shown, are stored evaluations of the position (CC0).