Definitions: (click to show/hide)
All-in Chess: Each side may move pieces of any colour, but may not repeat the position reached after the previous move. (Currently, neither Popeye nor WinChloe include this condition. So, the problem below is C-).
Sentinels: When a piece (Ks included but not pawns) moves, a pawn of the same colour appears on the vacated square unless that square is on the first or eighth ranks or there are 8 pawns of that colour on the board already.
Relegation Chess: In addition to promotion of pawns to pieces, pieces (Q,R,B,S) arriving back on their pawns’ home rank are “relegated” – changed back to pawns. (OR: If a piece (not King or Pawns) reaches the Pawns’ starting rank of the same side, it changes to a pawn).
|
No.1005 S.N. Ravi Shankar
India
original – 12.02.2016
|
Solution: (click to show/hide)
|
|
white Qh8 Rh7h6
black Kd7 Pf7
#4 (3+2)
All-in Chess
Sentinels
(no wK)
|
1. f7-f5+! Kd7-c7[+bPd7] 2. d7-d5+ Kc7-b7[+bPc7] 3. c7-c5+ Kb7-a7[+bPb7] 4. b7-b5# {
(C-; All In Chess condition is not implemented yet)}
|
|
|
No.1006 S.N. Ravi Shankar
India
original – 12.02.2016
|
Solution: (click to show/hide)
|
|
white Qh8 Rh7h6
black Ka7 Pg7 Rb4c3 Qa4 Ba3b3
#6 (3+7)
All-in Chess
Relegation Chess
(no wK)
|
1. g7-g5+! Bb3-f7=P 2. f7-f5+ Qa4-d7=P 3. d7-d5+ Rb4-b7=P 4. b7-b5+ Ba3-e7=P {
} 5. e7-e5+ Rc3-c7=P 6. c7-c5# {
(C-; All In Chess condition is not implemented yet)}
To compare with the previous problem: Other replies to white's moves will lead to short
mates. (Author)
|
Of course 1006 is more interesting !
In no.1006 it is very clever how the order of Black’s moves is forced!
The first problem seems cooked in 3 moves: 1.Ke8(+bPd7)+ Q~ 2.Rh8(+wPh7)+ Ke7 3.Ke8(+bPe7)#; 1…. Ke7 2.f5#.