MESON Chess Problem Database
Problem Display
PID: 42201 (8/2pKR3/2Pp1P2/1p1k2nr/1P2N3/2B2N2/3n2Q1/3r1B2 w - - 0 1)
Mansfield, Comins
Schakend Nederland, 1967
#2
10 + 8
| 4054 | Complete Mansfield/III | 1999 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxd2#
- 1...Rb1
- 2.Qxd2#
- 1...Rc1
- 2.Qxd2#
- 1...Re1
- 2.Qxd2#
- 1...Rh1
- 2.Qxg5#
- 1...Rh2
- 2.Qxg5#
- 1...Rh3
- 2.Qxg5#
- 1...Rh4
- 2.Qxg5#
- 1...Rh6
- 2.Qxg5#
- 1...Rh7
- 2.Qxg5#
- 1...Rh8
- 2.Qxg5#
- 1...Sb1
- 2.Qa2#
- 1...Sxf1
- 2.Qa2#
- 1...Sdxf3
- 2.Qa2#
- 1...Sdxe4
- 2.Qa2#
- 1...Sgxf3
- 2.Qg8#
- 1...Sh3
- 2.Qg8#
- 1...Sgxe4
- 2.Qg8#
- 1...Sh7
- 2.Qg8#
- 1...Ra1
- Tries
- 1.Sg1?
- 1...Sxf1
- 2.Qa2#
- 1...Sdxe4
- 2.Qa2#
- 1...Sgxe4
- 2.Qg8#
- 1...Ra1
- 2.Qxd2#
- 1...Rb1
- 2.Qxd2#
- 1...Rc1
- 2.Qxd2#
- 1...Re1
- 2.Qxd2#
- 1...Rh1
- 2.Qxg5#
- 1...Rh2
- 2.Qxg5#
- 1...Rh3
- 2.Qxg5#
- 1...Rh4
- 2.Qxg5#
- 1...Rh6
- 2.Qxg5#
- 1...Rh7
- 2.Qxg5#
- 1...Rh8
- 2.Qxg5#
- 1...Sb1
- 2.Sxg5#
- 2.Qa2#
- 1...Sb3
- 2.Sxg5#
- 1...Sdf3
- 2.Qa2#
- 1...Sc4
- 2.Sxg5#
- 1...Sgf3
- 2.Qg8#
- 1...Sh3
- 2.Sxd2#
- 2.Qg8#
- 1...Se6
- 2.Sxd2#
- 1...Sf7
- 2.Sxd2#
- 1...Sh7
- 2.Sxd2#
- 2.Qg8#
- 1...Rxf1!
- 1...Sxf1
- 1.Sh2?
- 1...Rxh2
- 2.Qxg5#
- 1...Sxf1
- 2.Qa2#
- 1...Sdxe4
- 2.Qa2#
- 1...Sgxe4
- 2.Qg8#
- 1...Ra1
- 2.Qxd2#
- 1...Rb1
- 2.Qxd2#
- 1...Rc1
- 2.Qxd2#
- 1...Re1
- 2.Qxd2#
- 1...Rh3
- 2.Qxg5#
- 1...Rh4
- 2.Qxg5#
- 1...Rh6
- 2.Qxg5#
- 1...Rh7
- 2.Qxg5#
- 1...Rh8
- 2.Qxg5#
- 1...Sb1
- 2.Sxg5#
- 2.Qa2#
- 1...Sb3
- 2.Sxg5#
- 1...Sdf3
- 2.Qa2#
- 1...Sc4
- 2.Sxg5#
- 1...Sgf3
- 2.Qg8#
- 1...Sh3
- 2.Sxd2#
- 2.Qg8#
- 1...Se6
- 2.Sxd2#
- 1...Sf7
- 2.Sxd2#
- 1...Sh7
- 2.Sxd2#
- 2.Qg8#
- 1...Rxf1!
- 1...Rxh2
- 1.Sh4?
- 1...Rxh4
- 2.Qxg5#
- 1...Sxf1
- 2.Qa2#
- 1...Sdxe4
- 2.Qa2#
- 1...Sgxe4
- 2.Qg8#
- 1...Ra1
- 2.Qxd2#
- 1...Rb1
- 2.Qxd2#
- 1...Rc1
- 2.Qxd2#
- 1...Re1
- 2.Qxd2#
- 1...Rh6
- 2.Qxg5#
- 1...Rh7
- 2.Qxg5#
- 1...Rh8
- 2.Qxg5#
- 1...Sb1
- 2.Sxg5#
- 2.Qa2#
- 1...Sb3
- 2.Sxg5#
- 1...Sdf3
- 2.Qa2#
- 1...Sc4
- 2.Sxg5#
- 1...Sgf3
- 2.Qg8#
- 1...Sh3
- 2.Sxd2#
- 2.Qg8#
- 1...Se6
- 2.Sxd2#
- 1...Sf7
- 2.Sxd2#
- 1...Sh7
- 2.Sxd2#
- 2.Qg8#
- 1...Rxf1!
- 1...Rxh4
- 1.Sc5?
- 1...Sxf1
- 2.Qa2#
- 1...Sdxf3
- 2.Qa2#
- 1...Sgxf3
- 2.Qg8#
- 1...dxc5
- 2.Re5#
- 1...Re1
- 2.Qxd2#
- 1...Ra1
- 2.Qxd2#
- 1...Rb1
- 2.Qxd2#
- 1...Rc1
- 2.Qxd2#
- 1...Rh1
- 2.Qxg5#
- 1...Rh2
- 2.Qxg5#
- 1...Rh3
- 2.Qxg5#
- 1...Rh4
- 2.Qxg5#
- 1...Rh6
- 2.Qxg5#
- 1...Rh7
- 2.Qxg5#
- 1...Rh8
- 2.Qxg5#
- 1...Sb1
- 2.Sxg5#
- 2.Qa2#
- 1...Sb3
- 2.Sxg5#
- 1...Sc4
- 2.Sxg5#
- 1...Sde4
- 2.Qa2#
- 1...Sh3
- 2.Sxd2#
- 2.Qg8#
- 1...Sge4
- 2.Qg8#
- 1...Se6
- 2.Sxd2#
- 1...Sf7
- 2.Sxd2#
- 1...Sh7
- 2.Sxd2#
- 2.Qg8#
- 1...Rxf1!
- 1...Sxf1
- 1.Sxd6?
- threat
- 2.Re5#
- 1...Sgxf3
- 2.Qg8#
- 1...Re1
- 2.Qxd2#
- 1...Rh7
- 2.Qxg5#
- 1...Sc4
- 2.Sxg5#
- 1...Sh3
- 2.Sxd2#
- 2.Qg8#
- 1...Sge4
- 2.Qg8#
- 1...Se6
- 2.Sxd2#
- 1...Sf7
- 2.Sxd2#
- 1...Sh7
- 2.Sxd2#
- 2.Qg8#
- 1...cxd6!
- threat
- 1.Ba1?
- threat
- 2.Sc3#
- 1...Sxf1
- 2.Qa2#
- 1...Sdxf3
- 2.Qa2#
- 1...Sdxe4
- 2.Qa2#
- 1...Sgxf3
- 2.Qg8#
- 1...Sgxe4
- 2.Qg8#
- 1...Rc1
- 2.Qxd2#
- 1...Sb1
- 2.Qa2#
- 1...Rxf1!
- threat
- 1.Sg1?
- Keys
- 1.Se1!
- 1...Rxe1
- 2.Qxd2#
- 1...Sxf1
- 2.Qa2#
- 1...Sdxe4
- 2.Qa2#
- 1...Sgxe4
- 2.Qg8#
- 1...Ra1
- 2.Qxd2#
- 1...Rb1
- 2.Qxd2#
- 1...Rc1
- 2.Qxd2#
- 1...Rh1
- 2.Qxg5#
- 1...Rh2
- 2.Qxg5#
- 1...Rh3
- 2.Qxg5#
- 1...Rh4
- 2.Qxg5#
- 1...Rh6
- 2.Qxg5#
- 1...Rh7
- 2.Qxg5#
- 1...Rh8
- 2.Qxg5#
- 1...Sb1
- 2.Sxg5#
- 2.Qa2#
- 1...Sb3
- 2.Sxg5#
- 1...Sdf3
- 2.Qa2#
- 1...Sc4
- 2.Sxg5#
- 1...Sgf3
- 2.Qg8#
- 1...Sh3
- 2.Sxd2#
- 2.Qg8#
- 1...Se6
- 2.Sxd2#
- 1...Sf7
- 2.Sxd2#
- 1...Sh7
- 2.Sxd2#
- 2.Qg8#
- 1...Rxe1
- 1.Se1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- R(a);N_GUARD::QAR(B),XS(b)
- R(f);N_GUARD::QAR(B),XS(e)
- R(f);N_GUARD,P_PINR(J)::QAR(B),XS(e)
- S(b);OGATE::QAB(B)
- S(b);OGATE,XB(A)::QAB(B)
- S(b);OGATE,XS(D)::QAB(B)
- S(b);OGATE,XS(F)::QAB(B)
- S(e);OGATE,XS(D)::QAB(B)
- S(e);OGATE::QAB(B)
- S(e);OGATE,XS(F)::QAB(B)
- Tries
- Try
- S(D);
- Vars
- S(b);OGATE,XB(A)::QAB(B)
- S(b);OGATE,P_SPINS(b),XS(F)::QAB(B)
- S(e);OGATE,P_SPINS(e),XS(F)::QAB(B)
- R(a);N_GUARD::QAR(B),XS(b)
- R(f);N_GUARD::QAR(B),XS(e)
- R(f);N_GUARD,P_PINR(J)::QAR(B),XS(e)
- S(b);N_GUARD::QAB(B)+S(F),XS(e)
- S(b);OGATE::QAB(B)
- S(e);OGATE::QAB(B)
- S(e);N_GUARD::QAB(B)+S(F),XS(b)
- Refutation
- R(a);XB(A)
- Try
- S(D);
- Vars
- R(f);N_GUARD,XS(D)::QAR(B),XS(e)
- S(b);OGATE,XB(A)::QAB(B)
- S(b);OGATE,P_SPINS(b),XS(F)::QAB(B)
- S(e);OGATE,P_SPINS(e),XS(F)::QAB(B)
- R(a);N_GUARD::QAR(B),XS(b)
- R(f);N_GUARD::QAR(B),XS(e)
- R(f);N_GUARD,P_PINR(J)::QAR(B),XS(e)
- S(b);N_GUARD::QAB(B)+S(F),XS(e)
- S(b);OGATE::QAB(B)
- S(e);OGATE::QAB(B)
- S(e);N_GUARD::QAB(B)+S(F),XS(b)
- Refutation
- R(a);XB(A)
- Try
- S(D);
- Vars
- R(f);N_GUARD,XS(D)::QAR(B),XS(e)
- S(b);OGATE,XB(A)::QAB(B)
- S(b);OGATE,P_SPINS(b),XS(F)::QAB(B)
- S(e);OGATE,P_SPINS(e),XS(F)::QAB(B)
- R(a);N_GUARD::QAR(B),XS(b)
- R(f);N_GUARD::QAR(B),XS(e)
- R(f);N_GUARD,P_PINR(J)::QAR(B),XS(e)
- S(b);N_GUARD::QAB(B)+S(F),XS(e)
- S(b);OGATE::QAB(B)
- S(e);OGATE::QAB(B)
- S(e);N_GUARD::QAB(B)+S(F),XS(b)
- Refutation
- R(a);XB(A)
- Try
- S(F);
- Vars
- S(b);OGATE,XB(A)::QAB(B)
- S(b);OGATE,P_SPINS(b),XS(D)::QAB(B)
- S(e);OGATE,P_SPINS(e),XS(D)::QAB(B)
- P(g);N_GUARD,XS(F)::R1(J)
- R(a);N_GUARD::QAR(B),XS(b)
- R(f);N_GUARD::QAR(B),XS(e)
- R(f);N_GUARD,P_PINR(J)::QAR(B),XS(e)
- S(b);N_GUARD::QAB(B)+S(D),XS(e)
- S(b);OGATE::QAB(B)
- S(e);OGATE::QAB(B)
- S(e);N_GUARD::QAB(B)+S(D),XS(b)
- Refutation
- R(a);XB(A)
- Try
- S(F);XP(g)
- Threat
- R1(J)
- Vars
- S(e);OGATE,P_SPINS(e),XS(D)::QAB(B)
- R(a);N_GUARD::QAR(B),XS(b)
- R(f);N_GUARD,P_PINR(J)::QAR(B),XS(e)
- S(b);N_GUARD::QAB(B)+S(D),XS(e)
- S(e);OGATE::QAB(B)
- S(e);N_GUARD::QAB(B)+S(D),XS(b)
- Refutation
- P(h);XS(F)
- Try
- B(C);
- Threat
- S(F)
- Vars
- S(b);OGATE,XB(A)::QAB(B)
- S(b);OGATE,XS(D)::QAB(B)
- S(b);OGATE,XS(F)::QAB(B)
- S(e);OGATE,XS(D)::QAB(B)
- S(e);OGATE,XS(F)::QAB(B)
- R(a);N_GUARD::QAR(B),XS(b)
- S(b);OGATE::QAB(B)
- Refutation
- R(a);XB(A)
- Try
- Actual
- S(D);
- Vars
- R(a);N_GUARD,XS(D)::QAR(B),XS(b)
- S(b);OGATE,XB(A)::QAB(B)
- S(b);OGATE,P_SPINS(b),XS(F)::QAB(B)
- S(e);OGATE,P_SPINS(e),XS(F)::QAB(B)
- R(a);N_GUARD::QAR(B),XS(b)
- R(f);N_GUARD::QAR(B),XS(e)
- R(f);N_GUARD,P_PINR(J)::QAR(B),XS(e)
- S(b);N_GUARD::QAB(B)+S(F),XS(e)
- S(b);OGATE::QAB(B)
- S(e);OGATE::QAB(B)
- S(e);N_GUARD::QAB(B)+S(F),XS(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).