MESON Chess Problem Database
Problem Display
PID: 210201 (B3Q3/1R6/1b1P4/4PP2/2r1k1K1/8/3R2N1/2r2B2 w - - 0 1)
Cheylan, Yves
The Problemist, 1985
#2
10 + 4
SOLUTION
- SOUND
- Sets
- 1...Bg1
- 2.Rb4#
- 1...Bf2
- 2.Rb4#
- 1...Be3
- 2.Rb4#
- 1...Ba5
- 2.Rb4#
- 1...Bc5
- 2.Rb1#
- 2.Rbb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rh7#
- 2.Rb8#
- 1...Ba7
- 2.Rb4#
- 1...Bc7
- 2.Rb4#
- 1...Bd8
- 2.Rb4#
- 1...Bg1
- Tries
- 1.Bxc4?
- threat
- 2.Bd5#
- 2.Rxb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rh7#
- 2.Rb8#
- 1...Ra1
- 2.Bd5#
- 2.Ra7#
- 1...Bg1
- 2.Bd5#
- 2.Rb1#
- 2.Rbb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rh7#
- 2.Rb8#
- 1...Bf2
- 2.Bd5#
- 2.Rb1#
- 2.Rbb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rh7#
- 2.Rb8#
- 1...Be3
- 2.Bd5#
- 2.Rb1#
- 2.Rbb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rh7#
- 2.Rb8#
- 1...Bd4
- 2.Rb1#
- 2.Rbb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rh7#
- 2.Rb8#
- 1...Ba5
- 2.Bd5#
- 2.Rb1#
- 2.Rbb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rh7#
- 2.Rb8#
- 1...Bc5
- 2.Bd5#
- 2.Rb1#
- 2.Rbb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rh7#
- 2.Rb8#
- 1...Ba7
- 2.Bd5#
- 2.Rb1#
- 2.Rbb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Rxa7#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rh7#
- 2.Rb8#
- 1...Bc7
- 2.Bd5#
- 2.Rb1#
- 2.Rbb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rxc7#
- 2.Rb8#
- 1...Bd8
- 2.Bd5#
- 2.Rb1#
- 2.Rbb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Ra7#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rh7#
- 2.Rb8#
- 1...Rxc4!
- threat
- 1.Bxc4?
- Keys
- 1.Qb5!
- threat
- 2.Qd5#
- 1...Rc5
- 2.Qe2#
- 1...Bc5
- 2.Re7#
- 1...Rd4
- 2.Re2#
- 1...Bd4
- 2.Bd3#
- threat
- 1.Qb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- B(d);OGATE::B(I)+R(H)
- Tries
- Try
- B(A);XR(b)
- Threat
- DUALS(10)
- Refutation
- R(a);XB(A)
- Try
- Actual
- Q(J);
- Threat
- QAB1(J)
- Vars
- R(b);OGATE::QAR2(J)
- B(d);S_CUTR(b)::B(I)+R(H)
- R(b);SBLOCK,S_CUTB(d)::R(B)
- B(d);SBLOCK::B(A)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).