MESON Chess Problem Database
Problem Display
PID: 108080 (3R3n/K7/8/NrknN2Q/R7/P2B4/2r5/B5b1 w - - 0 1)
Fortune, Robert
BCF, 1951
#2
9 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Rc4#
- 1...Rcb2
- 2.Rc4#
- 1...Rd2
- 2.Rc4#
- 1...Re2
- 2.Rc4#
- 1...Rf2
- 2.Bd4#
- 2.Rc4#
- 1...Rg2
- 2.Rc4#
- 1...Rh2
- 2.Rc4#
- 1...Rc4
- 2.Rxc4#
- 1...Rb3
- 2.Sxb3#
- 1...Rxa5+
- 2.Rxa5#
- 1...Rb7+
- 2.Sxb7#
- 1...Bh2
- 2.Bd4#
- 1...Bd4
- 2.Bxd4#
- 1...Sc3
- 2.Rc4#
- 1...Se3
- 2.Bd4#
- 1...Sb4
- 2.Sb3#
- 1...Sb6
- 2.Sb7#
- 1...Ra2
- Tries
- 1.Bc4?
- threat
- 2.Sd3#
- 2.Rxd5#
- 1...Rxa5+
- 2.Rxa5#
- 1...Rb7+
- 2.Sxb7#
- 1...Rxc4
- 2.Sd3#
- 2.Rxc4#
- 1...Rcb2
- 2.Rxd5#
- 1...Rc3
- 2.Rxd5#
- 1...Rbb2
- 2.Rxd5#
- 1...Rb3
- 2.Sxb3#
- 2.Rxd5#
- 1...Sc3
- 2.Sd3#
- 1...Se3
- 2.Sd3#
- 2.Bd4#
- 1...Sb4
- 2.Sb3#
- 2.Sd3#
- 1...Sf4
- 2.Sd3#
- 1...Sb6
- 2.Sb7#
- 2.Sd3#
- 1...Sf6
- 2.Sd3#
- 1...Sc7
- 2.Sd3#
- 1...Se7
- 2.Sd3#
- 1...Rd2!
- threat
- 1.Be4?
- threat
- 2.Sd3#
- 2.Rxd5#
- 1...Rxa5+
- 2.Rxa5#
- 1...Rb1
- 2.Rxd5#
- 1...Rbb2
- 2.Rxd5#
- 1...Rb3
- 2.Rxd5#
- 1...Rb4
- 2.Rxd5#
- 1...Rb6
- 2.Rxd5#
- 1...Rb8
- 2.Rxd5#
- 1...Rd2
- 2.Rc4#
- 1...Rc3
- 2.Rxd5#
- 1...Sc3
- 2.Sd3#
- 2.Rc4#
- 1...Se3
- 2.Sd3#
- 2.Bd4#
- 1...Sb4
- 2.Sb3#
- 2.Sd3#
- 1...Sf4
- 2.Sd3#
- 1...Sb6
- 2.Sb7#
- 2.Sd3#
- 1...Sf6
- 2.Sd3#
- 1...Sc7
- 2.Sd3#
- 1...Se7
- 2.Sd3#
- 1...Rb7+!
- threat
- 1.Rc8+?
- 1...Sc7
- 2.Sec4#
- 2.Sf7#
- 1...Kd6+!
- 1...Sc7
- 1.Qf3?
- threat
- 2.Rxd5#
- 2.Qxd5#
- 1...Rxa5+
- 2.Rxa5#
- 1...Rb7+
- 2.Sxb7#
- 1...Sc3
- 2.Rc4#
- 2.Qc6#
- 2.Qf8#
- 1...Se3
- 2.Bd4#
- 2.Qc6#
- 2.Qf8#
- 1...Sb4
- 2.Sb3#
- 2.Qf8#
- 1...Sf4
- 2.Qc6#
- 1...Sb6
- 2.Sb7#
- 2.Qc6#
- 2.Qf8#
- 1...Sf6
- 2.Qc6#
- 1...Sc7
- 2.Qc6#
- 2.Qf8#
- 1...Se7!
- threat
- 1.Qf7?
- threat
- 2.Rxd5#
- 2.Qxd5#
- 1...Rxa5+
- 2.Rxa5#
- 1...Rb7+
- 2.Sxb7#
- 1...Sc3
- 2.Rc4#
- 2.Qc4#
- 2.Qc7#
- 2.Qe7#
- 2.Qf8#
- 1...Se3
- 2.Bd4#
- 2.Qc7#
- 2.Qe7#
- 2.Qf8#
- 1...Sb4
- 2.Sb3#
- 2.Qe7#
- 2.Qf8#
- 1...Sf4
- 2.Qc7#
- 2.Qe7#
- 2.Qf8#
- 1...Sb6
- 2.Sb7#
- 2.Qc7#
- 2.Qe7#
- 2.Qf8#
- 1...Sf6
- 2.Qc7#
- 2.Qe7#
- 2.Qf8#
- 1...Sc7
- 2.Qxc7#
- 2.Qe7#
- 2.Qf8#
- 1...Se7
- 2.Qxe7#
- 1...Sxf7!
- threat
- 1.Qe8?
- threat
- 2.Qxb5#
- 2.Qc6#
- 1...Rxa5+
- 2.Rxa5#
- 1...Rb7+
- 2.Sxb7#
- 1...Rcb2
- 2.Rc4#
- 2.Qc6#
- 1...Rc4
- 2.Rxc4#
- 2.Qc6#
- 1...Rb1
- 2.Qc6#
- 1...Rbb2
- 2.Qc6#
- 1...Rb3
- 2.Sxb3#
- 2.Qc6#
- 1...Rb4
- 2.Qc6#
- 1...Rb8
- 2.Qc6#
- 1...Sc3
- 2.Rc4#
- 2.Qc6#
- 2.Qe7#
- 2.Qf8#
- 1...Sb4
- 2.Sb3#
- 2.Qxb5#
- 2.Qe7#
- 2.Qf8#
- 1...Sc7
- 2.Qc6#
- 2.Qe7#
- 2.Qf8#
- 1...Se7
- 2.Qxb5#
- 2.Qxe7#
- 1...Rb6!
- threat
- 1.Qh1?
- threat
- 2.Rxd5#
- 2.Qxd5#
- 1...Rxa5+
- 2.Rxa5#
- 1...Rb7+
- 2.Sxb7#
- 1...Rg2
- 2.Rc4#
- 1...Sc3
- 2.Rc4#
- 2.Qc6#
- 1...Se3
- 2.Bd4#
- 2.Qc6#
- 1...Sb4
- 2.Sb3#
- 1...Sf4
- 2.Qc6#
- 1...Sb6
- 2.Sb7#
- 2.Qc6#
- 1...Sf6
- 2.Qc6#
- 1...Sc7
- 2.Qc6#
- 1...Se7!
- threat
- 1.Qh6?
- threat
- 2.Sd7#
- 2.Qc6#
- 2.Qd6#
- 1...Rxa5+
- 2.Rxa5#
- 1...Rb7+
- 2.Sxb7#
- 1...Rb6
- 2.Sd7#
- 1...Sc3
- 2.Rc4#
- 2.Qf8#
- 2.Qc6#
- 2.Qd6#
- 1...Se3
- 2.Bd4#
- 2.Qf8#
- 2.Qc6#
- 2.Qd6#
- 1...Sb4
- 2.Sb3#
- 2.Qf8#
- 2.Qd6#
- 1...Sf4
- 2.Qf8#
- 2.Qc6#
- 2.Qd6#
- 1...Sb6
- 2.Sb7#
- 2.Qf8#
- 2.Qc6#
- 2.Qd6#
- 1...Sf6
- 2.Qf8#
- 1...Sc7
- 2.Qf8#
- 2.Qc6#
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...Sf7
- 2.Sd7#
- 2.Qc6#
- 1...Sg6!
- threat
- 1.Bc4?
- Keys
- 1.Qh2!
- threat
- 2.Sd7#
- 1...Rxa5+
- 2.Rxa5#
- 1...Rb7+
- 2.Sxb7#
- 1...Rxh2
- 2.Rc4#
- 1...Bxh2
- 2.Bd4#
- 1...Sc3
- 2.Rc4#
- 1...Se3
- 2.Bd4#
- 1...Sb4
- 2.Sb3#
- 1...Sf4
- 2.Qxc2#
- 1...Sb6
- 2.Sb7#
- 1...Sf6
- 2.Qxc2#
- 1...Sc7
- 2.Qxc2#
- 1...Se7
- 2.Qxc2#
- threat
- 1.Qh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- R(b);N_GUARD::R1(D)
- R(b);N_GUARD::R1(D),XR(b)
- R(c);N_GUARD::S(E),XR(c)
- R(c);CHECK,OGATE,XS(E)::R(D),XR(c)
- R(c);CHECK,N_GUARD::S(E),XR(c)
- B(a);N_GUARD::B(A)
- B(a);N_GUARD::B(A),XB(a)
- S(e);S_CUTR(b)::R1(D)
- S(e);S_CUTB(a)::B(A)
- S(e);S_CUTR(c)::S(E)
- Tries
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,OGATE,XS(E)::R(D),XR(c)
- R(c);CHECK,N_GUARD::S(E),XR(c)
- R(b);::R1(I),XS(e)
- R(c);::R1(I),XS(e)
- S(e);::QAR(G)+S(F),DCHECK
- Refutation
- R(b);
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,OGATE,XS(E)::R(D),XR(c)
- R(c);::R1(I),XS(e)
- R(b);N_GUARD::R1(D)
- R(b);::R1(I),XS(e)
- S(e);::QAR(G)+S(F),DCHECK
- Refutation
- R(c);CHECK
- Try
- R(I);CHECK
- Refutation
- K(d);CHECK,S_FLIGHT
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,OGATE,XS(E)::R(D),XR(c)
- R(c);CHECK,N_GUARD::S(E),XR(c)
- S(e);OGATE::QAR1(G)
- Refutation
- S(e);
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,OGATE,XS(E)::R(D),XR(c)
- R(c);CHECK,N_GUARD::S(E),XR(c)
- S(e);N_GUARD::QAB(G),XS(e)
- Refutation
- S(f);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,OGATE,XS(E)::R(D),XR(c)
- R(c);CHECK,N_GUARD::S(E),XR(c)
- R(c);::QAR1(G)
- Refutation
- R(c);
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,OGATE,XS(E)::R(D),XR(c)
- R(c);CHECK,N_GUARD::S(E),XR(c)
- R(b);N_GUARD::R1(D)
- S(e);S_CUTR(c)::S(E)
- S(e);OGATE::QAR1(G)
- Refutation
- S(e);
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- R(c);CHECK,OGATE,XS(E)::R(D),XR(c)
- R(c);CHECK,N_GUARD::S(E),XR(c)
- R(c);::S(F)
- S(e);N_GUARD::QAB(G)
- S(e);::QAB1(G)
- Refutation
- S(f);
- Try
- Actual
- Q(G);
- Threat
- S(F)
- Vars
- R(c);CHECK,OGATE,XS(E)::R(D),XR(c)
- R(c);CHECK,N_GUARD::S(E),XR(c)
- R(b);N_GUARD,XQ(G)::R1(D)
- B(a);N_GUARD,XQ(G)::B(A)
- S(e);S_CUTR(b)::R1(D)
- S(e);S_CUTB(a)::B(A)
- S(e);S_CUTR(c)::S(E)
- S(e);N_GUARD::QAR(G),XR(b)
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).