the second position is strange, because optically, it has a small illegal side, but the fairy condition has something to do with it. !
2 - PG 4 coups Optional Replacement
white Bc1f1 Ke1 Qd1 Pa2b2c2d2e2f2g2h2 Sg1b1 Ra1h1
black Bc8f8 Ke8 Qd8 Pa7b7c7d7e7f7g7h7 Sb8g8 Ra8h8
PG 4 Optional Replacement(16+16)
----------------------->
{}
1.e2-e4 Sg8-f6 2.Qd1-f3 Sf6*e4[+wPe2] 3.Qf3-f6 Se4*f6[+wQg8] 4.Ke1-d1 Sf6*g8[+wQe1]
Optional Replacement : a captured piece can be put back in the box by the capturing player or put back on the board with the following restrictions :
- the square must be free
- the position must be legal after replacement
- a pawn cannot be placed in the 1st or 8th row
.
- a Bishop must keep his colour at replacement
The position is simple but requires finesse in the 2nd and 3rd white moves
.
the next is a cyclical problem whose mechanics need to be discovered.
3 - #15 with Equistopper and chinese pieces
white VAe1e5 Bc3 Ke7 NEa7 Sc8 PAe3
black LEg1 Kd5 Pd3e4c7b6 Sa6 Ba1 Rb4a3
#15(7+10)e3: Paog1: Leoe1, e5: Vaoa7: Equistopper
{}
1.PAe3-g3 + ? Kd5-c5 2.PAg3-g5 #
but 1... LEg1*a7 + !{}
1.VAe5-g3 + ?
but 1... Kd5-c6 ! 2.Bc3-e5+ Kc6-b5 3.VAe1-c3+ Kb5-c4 4.VAg3-e1+ Kc4-b3{}
1.VAe1-g3+! Kd5-c4 2.Bc3-e1+ Kc4-b5{}
3.VAe5-c3+ Kb5-c6 4.VAg3-e5+ Kc6-d5{}
5.Be1-g3+ Kd5-c4 6.VAc3-e1+ Kc4-b5{}
7.VAe5-c3+ Kb5-c6 8.Bg3-e5+ Kc6-d5{}
9.Ke7-f7 {threatens Ne7#} LEg1-g7 10.VAe1-g3+ Kd5-c4{}
11.VAc3-e1+ Kc4-b5 12.Be5-c3+ Kb5-c6{}
13.VAg3-e5+ Kc6-d5 14.PAe3-g3+ Kd5-c5{}
15.PAg3-g5 #
Equistopper : attacks the central point of symmetry in relation to an occupied square of the chessboard provided that it falls on a full square
example: Ea7 control c6 because of e5, c5 because of e3, c4 because of e1, etc...
Vao : Bishop needing a sautoir to capture
Leo : Queen needing a sautoir to capture
Pao : Rook needing a sautoir to capture
It is necessary to make a forcing maneuver without capturing gloves.
A very nice problem, the association of the 2 authors is certainly not foreign to it !
To follow, a very nice Gockel with a small menagerie
4 - #2 AntiCirce with Bishop-Lion and Rook-Lion
white Be6 BLe5 Kg2 Qe1 Pb7d7d6g7g4f2d2d3 Sh1f3 Rg6 RLa4
black Bf8 BLb4h5 Kf4 Qf5 Pa5 Sb8e8 Ra8e7 RLg8a7
#2 AntiCirce(16+12)e5, b4, h5: Bishop-Liona4, g8, a7: Rook-Lion
{}
1.BLe5-c7 ! {the f8-square being occupied, this move does not check} threat: 2.Qe1-e3 #{}
1... Qf5-c5 2.g7*f8=Q [wQf8->d1] #{}
1... Qf5-e5 2.g7*f8=R [wRf8->a1] #{}
1... Qf5-e4 2.g7*f8=B [wBf8->c1] #{}
1... Qf5*g4-d8 2.g7*f8=S [wSf8->g1] #{}
1... Qf5*e6-d8 2.Qe1-e4 #
Anticirce : The capturing piece is reborn on its original square (which is a promotion square for fairy pieces) if the square is free, otherwise the capture is not legal.
Bishop-Lion : Bishop needing a sautoir to move and eventually capture
Rook-Lion : Rook needing a sautoir to move and possibly capture
The first question to be answered is: why Qe3 don't checkmate ?
Afterwards, it becomes a little clearer. Although ...
A small remark : The Black King is not in check by the Lion-Rook a4 because of the occupation of the renaissance square f8
Still in the bestiary, a 2-moves
5 - #2 with Lion and Rose-Lion
white Pd5e2 RNb3e7 Rb5f5 Kd8
black Pf6f4 Sg8 Kd6 lig3
#2(7+5)g3: Lione7, b3: Rose-Lion
{}
1.RNe7-a3 + ?
but
1...LIg3*a3 !{}
1.RNb3-b7 ? threat:
2.RNe7-a3 #
2.RNb7-b1 #{}
1...Sg8*e7
2.RNb7-b1 #{}
but
1...f4-f3 !{}
1.e2-e4 ? {A} threat:
2.RNb3-d2 # {B}
1...f4-f3 {a}
2.RNe7-a3 # {C}
but
1...f4*e3 ep. !{}
1.RNb3-d2 ! {B} threat:
2.RNe7-a3 # {C}
1...f4-f3 {a}
2.e2-e4 # {A}
1...Sg8*e7
2.RNd2-h6 #
Lion : Queen needing a sautoir to move and possibly capture
Rose-Lion : Rose needing a sautoir to move and possibly capture
The Rose is a rounded Extended Knight, if the definition can be imaged.
Example: if e7 was a Rose, it could move to g6, h4, g2, e1, c2, b4 and c6 or c8 and a6or capture g8
.
As it is a Rose-Lion, only squares e3, f1, e1, b4 and h4 are accessible because of the sautoirs d5 and f5. The sautoir of RLb3 is the Rd8
A very nice problem
For a little rest, a serial selfmate
6 - serial s#8
white Pc7d7e7f7g7 Ke8 Bf8
black Qb6 Kc6
ser-s#8(7+2)
{}
1.g7-g8=R 2.Rg8-g5 3.Bf8-g7 4.Ke8-f8 5.e7-e8=Q 6.Qe8-b8 7.c7-c8=B 8.d7-d8=S + Qb6*d8 #
{AUW with a critical blow from the WQ passing on the other side of c8}
serial selfmate : White plays n moves in a row to force black to check them in 1 move
.
Let's now move on to shrinking chess.
The rule is simple: a piece cannot play a move longer geometrically than its previous move
.
Who better than Ronald Turnbull could highlight the rule ?
It starts with the simple (seemingly) following position
7 - =7 shrinking chess
white Kh6
black Kh8
=7 shrinking Chess(1+1)
{h8 is not of the same colour as e8, so the Black King has taken at least 1 orthogonal move.
and is no longer entitled to the diagonal pitch which measures the root of 2..
As for the White King, e1 is of the same colour as h6, so it is not, a priori, "shrunk"..
In the position, there is a checkmate in 1 move by Kg7#; the first move, therefore, is not } 1.Kh6-g7
{if you want to make stalematethe solution : }
1.Kh6-g5 {} 1...Kh8-h7 ? 2.Kg5-g6 ! Kh7-h8 3.Kg6-g7 {stalemate}
1...Kh8-g8 2.Kg5-f6 {}
2...Kg8-f8 ? 3.Kf6-e7 ! {and stalemate at the 5th move}
2...Kg8-h8 3.Kf6-e5 !! {a certainly original way of capturing the opposition.
Kg7 would matt as seen above} 3...Kh8-g8 {on Kh7, 4.Kf5}
4.Ke5-e6 ! {the necessary degradation} 4...Kg8-g7 5.Ke6-f6 Kg7-g8 6.Kf6-f7 Kg8-h8 7.Kf7-g7 ! {stalemate}
To help you a little: we can prove that the Black King can only play orthogonal moves
the next one in the genre is a bit more loaded in material!
8 - #2 2 solutions shrinking chess
white Kf6 Rh1
black Kg8
#2 shrinking chess(2+1)
{From the colour of their squares, none of the 2 Kings is "shrunk".
As the Rh1 has probably not moved, it has all the latitude it needs to move.
Let's try } 1.Rh1-h6 {length 5} Kg8-f8 {The Black King is now "shrunk". }
2.Rh6-h8 + {length 2} Kf8-e8 ! {King escapes.
Indeed, the Rook can't make any more moves of a length > 2, and it would take 3 to capture the King.
The position being a little rough, we still have to find the 2 solutions}
Now a good brainstorm signed, as it should be, by Peter Harris.
9 - #3 Isardam Super-Circe
white Qb5 Rf2d5 Bc2 Sd4f5
black Qh8 Pe4 Sd2 Re7g8 Ke5
#3(6+6)Isardam Super-Circeb) pieces 1 row down
{
}
a) {
}
1.Sf5*e7[+bRd1] ! Rg8-g5{
}
2.Sd4-c6+ Qh8-e8{
}
3.Qb5-b7 #{The only possible defensive moves } 3...Sd2-c4 {et} 3...Sd2-f3
{have the major disadvantage of putting Rooks d1 and d5 in mutual "observation".
}
b) shift a2 ==> a1{1 row down
}
1.Sf4*e6[+bRc8] ! Rg7-g4{
}
2.Se6-g5 + Sd1-c3{
}
3.Qb4*c3 [+bSc7] #{The capture of Ng5 } 3...Rg4*g5
{has the disadvantage of allowing the Black King to be taken by the Rd4
}
Isardam : any move putting 2 opposite pieces of the same kind in mutual control is illegal (the Black King is not in check because of the e7 rook)
Super-Circé : a captured piece is replaced at the discretion of the taker provided the position is legal (King of the taker not engaged or other case)
.
And now a double stalemate: after the last move, neither side can move an ear.
10 - h==4 with Rose and Locusts
white ROb2 Pa2 Kd1 Ra4c4 Ld3h6
black Pa6d2 Kf5 Re4 Lb4
h==4(7+5)b2: Rosed3, h6, b4: Locust
{}
1.Kf5-g4 Rc4-c3 + {} 2.Re4-e5 Rc3-a3 {} 3.a6-a5 Kd1-c2 + {}
4.d2-d1=L + Kc2-b3 {double stalemate !!}
Locust : Grasshopper capturing his sautoir and landing just behind.
And at the end of the course, the Master offers us a fish from April to June.
11 - =1 with twin
white Pd7f6 Ka6 Bc6
black Pf7c7 Kb8
=1(4+3)b) + black Rook c8
{}
a){}
1.d7-d8=K ! {stalemate !}
b) +bRc8{+bRc8}
1.d7-d8[+bKd8] ! {stalemate !!}
A passage through the Dragon for the first position in the restaurant.
12 - hs#5 with Lions et Dragon (N + p)
white Pa3b7c7 Ka2 LIa1
black Pf7c5 Kh8 DRb8
hs#5(5+4)a1: Lionb8: Dragon
{}
1.c7-c8=LI DRb8-d7 {} 2.b7-b8=DR DRd7-d5 {} 3.DRb8-d7 c5-c4 {}
4.DRd7-f6 + DRd5-d4 {} 5.LIc8-c3 DRd4*c3 #
Dragon : Knight + pawn
And to finish the fireworks, the final bouquet.
13 - serial s=10 Anticirce
Tibor ERSEK
8/2pB1p2/k1P2N2/P1b1rp2/2K2n2/1p3r2/2Pq4/RQ5b
W. : Kc4 Qb1 Ra1 Bd7 Nf6 Pc6a5c2
B. : Ka6 Qd2 Re5f3 Be5h1 Nf4 Pc7f7f5b3
ss=10 (8+11)
Anticirce
Michel, as a dessert, presented us one of his creations made during his ablutions with a little-used genre: the "pressurised" chess, but as the judgement has not yet been made, you will not be entitled to it. You had to be there !
It remains for me to wish you, by joining the Master, very good studious holidays.
Yours sincerely
Le greffier
Add a comment