Real puzzles from rated games · median rating 943 · solved 835,777,748 times
Difficulty 600–1199
These are endgame tactics puzzles rated 600–1199, the Foundation level on this site. They come from real rated games: 1,211,811 puzzles, median rating 943, solved 835,777,748 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 endgame tactics solution looks like
Sample: 2,000 endgame tactics puzzles at foundation level (0.2% of all 1,211,811).
22.8% need 1 solver move, 62% need 2 solver moves, 13.4% need 3 solver moves, 1.6% need 4 solver moves. Median rating: 827 for the shortest solutions, 1096 for the longest.
41.7% open with a rook move. The first move captures in 26.4% and gives check in 86.2%; 53.6% end in checkmate, 11.9% involve a sacrifice, 50.4% have White to move.
26.4%first move captures
86.2%first move gives check
53.6%end in checkmate
11.9%involve a sacrifice
How many moves does the solver need?
1 solver move
22.8% · median rating 827
2 solver moves
62% · median rating 941
3 solver moves
13.4% · median rating 1043
4 solver moves
1.6% · median rating 1096
Which piece plays the key move?
Key move by a rook
41.7%
Key move by a queen
25.9%
Key move by a knight
13.8%
Key move by a pawn
9%
Key move by a bishop
6.2%
Key move by the king
3.5%
What does the solver win?
Most valuable capture: rook
39.7%
Captures nothing along the line
26.2%
Most valuable capture: queen
13.8%
Most valuable capture: pawn
9.4%
Most valuable capture: bishop
7.5%
Most valuable capture: knight
3.4%
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)
35.4%
Up to 2 pawns’ worth
10.3%
3–4 points (about a minor piece)
14.6%
5–8 points (a rook or more)
30.8%
9 or more points (a queen’s worth)
9%
How much is left on the board?
28 or more pieces on the board
0%
21–27 pieces
2.4%
13–20 pieces
66.5%
12 pieces or fewer
31%
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: e8 (8.4%), d8 (7.5%), c8 (5.4%), f7 (5.3%), f8 (4.9%).
3.8
3.6
5.4
7.5
8.4
4.9
1.7
2.7
8
1.5
1.8
3.4
5.3
3.3
3
7
1.4
1.6
2.6
3
2
1.9
6
1.7
2.1
1.8
1.9
2.1
1.8
5
1.2
1
1.7
1.8
1.3
1.5
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 endgame tactics 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 624 · solved 15,788 times
· 2 solver moves to find. A quiet solution: no capture and no mate.Reveal line
Opponent's last move: f3
Solution: b7 → f2 → b8=Q+
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Black to move · rating 856 · solved 22,570 times
· 2 solver moves to find. The solver captures a rook.Reveal line
Opponent's last move: Rf7
Solution: Ng3+ → Kg2 → Nxf1
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White to move · rating 915 · solved 16,098 times
· 2 solver moves to find. A quiet solution: no capture and no mate.Reveal line
Opponent's last move: Rf2
Solution: Nh6+ → Kf8 → g7+
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White to move · rating 1040 · solved 15,541 times
· 2 solver moves to find. The solver captures a rook.Reveal line
Opponent's last move: Kh7
Solution: Qc2+ → Kg8 → Qxd1
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Black to move · rating 1061 · solved 15,860 times
· 2 solver moves to find. It gives up the rook (Rc2+) on the way. The solver captures a rook.Reveal line
Opponent's last move: Kd2
Solution: Rc2+ → Rxc2 → bxc2
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White to move · rating 1116 · solved 15,658 times
· 3 solver moves to find. It gives up the bishop (Bd5+) on the way. The solver captures a queen.Reveal line
Opponent's last move: Qc5
Solution: Qf6+ → Kg8 → Bd5+ → Qxd5+ → Kxd5
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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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Black to move · rating 1127 · solved 15,687 times
· 2 solver moves to find. A quiet solution: no capture and no mate.Reveal line
Opponent's last move: Ke2
Solution: Kg2 → Ke3 → h2
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White to move · rating 1131 · solved 15,716 times
· Mate in 2. It ends in checkmate on g8 with the queen.Reveal line
Opponent's last move: g6
Solution: Rd8+ → Kh7 → Qg8#
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White to move · rating 1143 · solved 15,847 times
· Mate in 1. It ends in checkmate on b7 with the queen.Reveal line
Opponent's last move: Qxe5
Solution: Qb7#
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White to move · rating 1165 · solved 16,829 times
· Mate in 2. It ends in checkmate on b8 with the rook. The solver captures a rook.Reveal line
Opponent's last move: Rxb8
Solution: Qh6+ → Kg8 → Rxb8#
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White to move · rating 1167 · solved 15,950 times
· 3 solver moves to find. The solver captures a rook.Reveal line
Opponent's last move: Rxg8
Solution: Kxg8 → g3 → f7 → g2 → f8=Q+
Positions and move sequences come from real rated games (CC0 data). Engine evaluations, where shown, are stored evaluations of the position (CC0).