MESON Chess Problem Database
Problem Display
PID: 141147 (6n1/2p1PB1p/Rr4qR/2QN1k2/3K3P/1P1N1P2/8/8 w - - 0 1)
Anderson, Martin (England)
Source?, 0000
#2
11 + 6
SOLUTION
- SOUND
- Sets
- 1...Qh5
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sxb6#
- 2.Sf6#
- 2.Sxc7#
- 2.Rxh5#
- 1...Qxf7
- 2.Se3#
- 1...Qg1+
- 2.Se3#
- 1...Qg2
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sxb6#
- 2.Sf6#
- 2.Sxc7#
- 1...Qg3
- 2.Se3#
- 2.S5f4#
- 1...Qg4+
- 2.S5f4#
- 1...Qg5
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sxb6#
- 2.Sf6#
- 2.Sxc7#
- 1...Qc6
- 2.Se3#
- 2.Rh5#
- 1...Qd6
- 2.Rh5#
- 1...Qe6
- 2.Se3#
- 2.Rh5#
- 1...Qf6+
- 2.Sxf6#
- 1...Qg7+
- 2.Sf6#
- 1...Rxb3
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sf6#
- 2.Sxc7#
- 1...Rb4+
- 2.S5xb4#
- 1...Rb5
- 2.Se3#
- 1...Rf6
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sb6#
- 2.Sxf6#
- 2.Sxc7#
- 1...Rb7
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sf6#
- 2.Sxc7#
- 1...Rb8
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sf6#
- 2.Sxc7#
- 1...Sf6
- 2.Se3#
- 1...Qh5
- Tries
- 1.Rh5+?
- 1...Qg5
- 2.Rxg5#
- 1...Qxh5!
- 1...Qg5
- 1.Rxg6?
- threat
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sxb6#
- 2.Sf6#
- 2.Sxc7#
- 2.Rg5#
- 1...Rb4+
- 2.S5xb4#
- 1...Rxb3
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sb6#
- 2.Sf6#
- 2.Sxc7#
- 2.Rg5#
- 1...Rxa6
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sb6#
- 2.Sf6#
- 2.Sxc7#
- 2.Rg5#
- 1...Rxg6
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sf6#
- 2.Sxc7#
- 1...Sxe7
- 2.Se3#
- 2.Sxe7#
- 2.Rg5#
- 1...Rb5
- 2.Se3#
- 2.Rg5#
- 1...Rc6
- 2.Se3#
- 2.Rg5#
- 1...Rd6
- 2.Rg5#
- 1...Re6
- 2.Se3#
- 2.Rg5#
- 1...Rf6
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sb6#
- 2.Sxf6#
- 2.Sxc7#
- 2.Rg5#
- 1...Rb7
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sb6#
- 2.Sf6#
- 2.Sxc7#
- 2.Rg5#
- 1...Rb8
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sb6#
- 2.Sf6#
- 2.Sxc7#
- 2.Rg5#
- 1...Sf6
- 2.Se3#
- 2.Sxf6#
- 2.Rg5#
- 1...c6
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sxb6#
- 2.Sf6#
- 2.Sc7#
- 2.Rg5#
- 1...h6
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sxb6#
- 2.Sf6#
- 2.Sxc7#
- 1...hxg6!
- threat
- 1.e8S?
- threat
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sxb6#
- 2.Sdf6#
- 2.Sdxc7#
- 2.Se7#
- 1...Qg1+
- 2.Se3#
- 1...Qg4+
- 2.S5f4#
- 1...Qf6+
- 2.Sdxf6#
- 1...Qg7+
- 2.Sdf6#
- 2.Sxg7#
- 1...Rb4+
- 2.S5xb4#
- 1...Qxf7
- 2.Se3#
- 2.Se7#
- 1...Rxb3
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sb6#
- 2.Sdf6#
- 2.Sdxc7#
- 2.Se7#
- 1...Rxa6
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sb6#
- 2.Sdf6#
- 2.Sdxc7#
- 2.Se7#
- 1...Qg3
- 2.Se3#
- 2.S5f4#
- 2.Se7#
- 1...Qc6
- 2.Se3#
- 2.Se7#
- 2.Sg7#
- 2.Rh5#
- 1...Qd6
- 2.Sg7#
- 2.Rh5#
- 1...Qe6
- 2.Se3#
- 2.Se7#
- 2.Sg7#
- 2.Rh5#
- 1...Rb5
- 2.Se3#
- 2.Se7#
- 1...Rc6
- 2.Se3#
- 2.Se7#
- 1...Re6
- 2.Se3#
- 2.Se7#
- 1...Rf6
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sb6#
- 2.Sdxf6#
- 2.Sdxc7#
- 2.Se7#
- 1...Rb7
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sb6#
- 2.Sdf6#
- 2.Sdxc7#
- 2.Se7#
- 1...Rb8
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sb6#
- 2.Sdf6#
- 2.Sdxc7#
- 2.Se7#
- 1...Sf6
- 2.Se3#
- 2.Sdxf6#
- 2.Se7#
- 1...Se7
- 2.Se3#
- 2.Sxe7#
- 1...c6
- 2.Sc3#
- 2.Se3#
- 2.S5b4#
- 2.S5f4#
- 2.Sxb6#
- 2.Sdf6#
- 2.Sdc7#
- 2.Se7#
- 1...Rd6!
- threat
- 1.Rh5+?
- Keys
- 1.Qc2!
- threat
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.S3b4#
- 2.S3f4#
- 2.Sc5#
- 2.Se5#
- 1...Qg1+
- 2.Sf2#
- 1...Qg4+
- 2.S3f4#
- 1...Qf6+
- 2.Se5#
- 1...Qg7+
- 2.Se5#
- 1...Rb4+
- 2.S3xb4#
- 1...c5+
- 2.Sxc5#
- 1...Rxb3
- 2.Se3#
- 1...Qg2
- 2.Sf2#
- 2.Se3#
- 1...Qc6
- 2.Sc5#
- 2.Se3#
- 2.Rh5#
- 1...Qe6
- 2.Se5#
- 2.Rh5#
- 1...Rc6
- 2.Sc5#
- 1...Re6
- 2.Se5#
- 1...Sf6
- 2.Se3#
- threat
- 1.Qc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- Q(c);XB(K)::QAR(F)+S(G),DCHECK
- Q(c);CHECK::QAR(F)+S(G),DCHECK
- Q(c);CHECK::QAR(F)+S(G)
- Q(c);N_GUARD,P_PINS(G)::R(I)
- Q(c);CHECK::QAR(F)+S(G),XQ(c)
- R(b);CHECK::QAR(F)+S(G),XR(b)
- R(b);::QAR(F)+S(G),DCHECK
- S(f);SBLOCK::QAR(F)+S(G),DCHECK
- Tries
- Try
- R(I);CHECK
- Vars
- Q(c);N_GUARD,P_SPINQ(c)::R1(I),XQ(c)
- Refutation
- Q(c);XR(I)
- Try
- R(I);XQ(c)
- Threat
- DUALS(8)
- Vars
- R(b);CHECK::QAR(F)+S(G),XR(b)
- R(b);P_PINS(G)::R1(I)
- Refutation
- P(e);XR(I)
- Try
- P(J);
- Threat
- DUALS(8)
- Vars
- Q(c);CHECK::QAR(F)+S(G),DCHECK
- Q(c);CHECK::QAR(F)+S(G)
- Q(c);CHECK::QAR(F)+S(G),XQ(c)
- R(b);CHECK::QAR(F)+S(G),XR(b)
- Refutation
- R(b);P_PINS(G)
- Try
- Actual
- Q(F);
- Threat
- DUALS(8)
- Vars
- Q(c);CHECK::QAB(F)+S(B)
- R(b);CHECK::QAB(F)+S(B),XR(b)
- P(d);CHECK::QAB(F)+S(B),XP(d)
- R(b);XP(A)::S(G)
- R(b);::QAB(F)+S(B)
- S(f);SBLOCK::S(G)
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).