1
1
Medium
Reach this position in 5 moves
Proof gameRetrograde
2
2
Easy
Helpmate in 2
Helpmate
3
3
Easy
Serieshelpmate
Serieshelpmate
4
4
Medium
Add King and mate
Placement mate
5
5
Easy
Selfmate in 2
Selfmate
6
6
Medium
Find the mate
Construction
7
7
Easy
Helpmate in 2!
Helpmate
8
8
Easy
Find the pieces behind the numbers
Hidden pieces
9
9
Easy
Retract White's last move, then mate in 2!
Retractor
10
10
Easy
Checkless Helpmate
ChecklessHelpmate
11
11
Hard
Place the pieces
Construction
12
12
Brutal
Construct a game that ends with 6. BxRc4#
Construction
13
13
Easy
Black makes 20 consecutive moves, then White mates in 1
Serieshelpmate
14
14
Easy
Rotate the position
15
15
Hard
Selfmate in 4 moves
Selfmate
16
16
Medium
Proof game
Proof game
17
17
Medium
Helpstalemate
Helpmate
18
18
Medium
Helpmate in 5
Helpmate
19
19
Easy
Mate in 2
Directmate
20
20
Hard
Retractor
Retractor
21
21
Hard
Get to this position in 10.5 moves
Proof game
22
22
Medium
Black plays 37 moves in a row, then White mates in 1
Serieshelpmate
23
23
Brutal
What were the last 7 moves?
Retrograde
24
24
Holy Hell
Tacu's Enigma
Proof gameRetrograde
1
1
Easy
Reach this position in 6 moves
Proof game
2
2
Hard
2 - Helpmate in 3
Helpmate
3
3
Easy
Helpnotmate
4
4
Easy
Selfmate
Selfmate
5
5
Easy
Add a piecee
Placement mate
6
6
Easy
Add a square
Add a square
7
7
Medium
Serieshelpstalemate
8
8
Brutal
Construction
Construction
9
9
Medium
PG 7
Proof game
10
10
Medium
10
Helpmate
11
11
Medium
11
Retractor
12
12
Medium
12
Serieshelpmate
13
13
Medium
13 - Guarded pieces
14
14
Hard
14
Retrograde
15
15
Brutal
15 - Selfmate
Selfmate
16
16
Hard
Day 16
Proof game
17
17
Medium
17
Coloring
18
18
Hard
18 - checkless
Checkless
19
19
Brutal
19
RetractorHelpmate
20
20
Medium
20
Placement mate
21
21
Hard
21
Checkless
22
22
Hard
22
Retrograde
23
23
Medium
23
Helpmate
24
24
Holy Hell
Decode the chess game
Proof game
1
1
Easy
Proof game 4.0
Proof gameRetrograde
2
2
Medium
Qd7# One-sided chess
3
3
Easy
Helpmate in 2
Helpmate
4
4
Medium
Mirror chess
Mirror
5
5
Easy
Selfmate in 2
Selfmate
6
6
Easy
Serieshelpmate
Serieshelpmate
7
7
Hard
Kf6#
Construction
8
8
Hard
Helpmate 5?
Helpmate
9
9
Hard
Checkless
ChecklessHelpmate
10
10
Brutal
10 - a3
ConstructionHelpmate
11
11
Medium
Selfmate #4
Selfmate
12
12
Hard
12 - PG?
Proof gameRetrograde
13
13
Medium
13 - reflexmate
Reflexmate
14
14
Hard
14 - serieshelpmate
Serieshelpmate
15
15
Medium
15 - retractor
Retractor
16
16
Hard
16 - ?
Helpmate
17
17
Hard
17 - retrograde
Retrograde
18
18
Medium
18 - add a piece mate in 2
Placement mate
19
19
Hard
19 - ditto
Ditto chess
20
20
Brutal
Selfmate in 4
Selfmate
21
21
Brutal
Mirror chess
Mirror
22
22
Hard
22 -
Proof game
23
23
Hard
23 - stuff
RetractorRetrograde+1
24
24
Hard
24 -
Helpmate
1
1
Qh5
2
2
2. Construction
3
3
Miltner, Vratislav helpmate in 3
4
4
Seriesmover #s5
5
5
Day 5
6
6
6 - Construction en passant mate
7
7
7
8
8
8 - Construction king mate?
9
9
9 - Construct a game that
10
10
10 - mate
11
11
11 Seriesmate
12
12
10 - Proof Game
13
13
13
14
14
14 - selfmate
15
15
15 -
16
16
16 - text
17
17
17 - retrograde, last 3 moves
18
18
18 -
19
19
19 - help
20
20
20
21
21
21 - Proof Game
22
22
22
23
23
23
24
24