No. 22, Apr-Jun 2002

D119 - Andrew Buchanan
Problem Paradise 22, July-September 2002

5+1. Mate in 4 moves

[8/8/8/8/1N6/2N5/1P1N4/k2K4]

W120 - Janis Lukasevics
Problem Paradise 22, July-September 2002

5+4. Mate in 2 moves

[1k6/1P1p4/pKp5/N1PP4/8/8/8/8]

H132 - Hiromi Tsutsui
Problem Paradise 22, July-September 2002

4+7. Help mate in 2 moves. a) diagram b) d2->d4

[Kb6/Rp6/p7/8/kPp5/p1p5/3P4/8]

F128 - Ayako Okaya
Problem Paradise 22, July-September 2002

1+0+6. Six maskmen, 0 moves

[1x4xx/6xK/8/8/8/8/8/1x5x]

F129 - Ayako Okaya
Problem Paradise 22, July-September 2002

1+0+6. Six maskmen, 3 moves

[8/8/8/4x1x1/8/3x1K1x/8/4x1x1]

R054 - Eric Huber
Problem Paradise 22, July-September 2002

16+16. Proof game in 9.0 moves (Transmuting kings)

[r1b1Kbnr/pp1p1ppp/2p5/2n1p1B1/3P4/Q4P2/PPP1PqPP/RN2kBNR]

R055 - Eric Huber
Problem Paradise 22, July-September 2002

1+2. Retract one move, then hs#1.5

[8/8/8/8/8/8/1K1p4/3k4]

R056 - Rustam Ubaidullaev
Problem Paradise 22, July-September 2002

14+12. Proof game in 28.5 moves

[1rqq1b2/pPPPPPP1/2R2n1n/3Q3p/k7/3K4/bp3p2/1NB2BNR]

Six maskmen, n moves

Identify all of black's six unknowns in n consecutive legal white king-moves, under the following conditions:

• The six black unknowns are of different type (P, S, B, R, Q, K are all present exactly once)
• The white king isn't in check in the diagram position.
• The white king can't capture.
• The position is legal.

Examples

• in F128, the unknowns can be identified in the diagram position. h1 isn't a rook or a queen, because white isn't in check in this position.
• In F129, the first white move can't be Kf3-f2, because no black unknown could be a knight then.

Transmuted kings

When in check, the king moves like the checking piece for one half-move. Example: The game can start with 1. e4 f5 2. Qh5 Kh5 (black king moves like a queen, because he's in check by the white queen).