MESON Chess Problem Database
Problem Display
PID: 254624 (1Q4K1/6P1/B1p2rp1/2k3N1/R3P3/2r5/2n5/8 w - - 0 1)
Meurs, Abraham
Probleemblad, 1946
#2
7 + 6
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Rc4#
- 1...Rb3
- 2.Rc4#
- 1...Rd3
- 2.Rc4#
- 1...Re3
- 2.Rc4#
- 1...Rcf3
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rh3
- 2.Rc4#
- 1...Rc4
- 2.Rxc4#
- 1...Rf1
- 2.Se6#
- 1...Rf2
- 2.Se6#
- 1...Rff3
- 2.Se6#
- 1...Rf4
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Rd6
- 2.Qa7#
- 1...Re6
- 2.Sxe6#
- 1...Rf7
- 2.Se6#
- 1...Rf8+
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sa1
- 2.Qb4#
- 1...Se1
- 2.Qb4#
- 1...Sa3
- 2.Qb4#
- 1...Se3
- 2.Qb4#
- 1...Sb4
- 2.Qxb4#
- 1...Sd4
- 2.Qb4#
- 1...Ra3
- Tries
- 1.Kh7?
- 1...Rc4
- 2.Rxc4#
- 1...Sb4
- 2.Qxb4#
- 1...Ra3
- 2.Rc4#
- 1...Rb3
- 2.Rc4#
- 1...Rd3
- 2.Rc4#
- 1...Re3
- 2.Rc4#
- 1...Rcf3
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rf1
- 2.Se6#
- 1...Rf2
- 2.Se6#
- 1...Rff3
- 2.Se6#
- 1...Rf4
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Rd6
- 2.Qa7#
- 1...Re6
- 2.Sxe6#
- 1...Rf7
- 2.Se6#
- 1...Rf8
- 2.Se6#
- 2.gxf8Q#
- 2.gxf8B#
- 1...Sa1
- 2.Qb4#
- 1...Se1
- 2.Qb4#
- 1...Sa3
- 2.Qb4#
- 1...Se3
- 2.Qb4#
- 1...Sd4
- 2.Qb4#
- 1...Rh3+!
- 1...Rc4
- 1.Kh8?
- 1...Rf8+
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rc4
- 2.Rxc4#
- 1...Sb4
- 2.Qxb4#
- 1...Ra3
- 2.Rc4#
- 1...Rb3
- 2.Rc4#
- 1...Rd3
- 2.Rc4#
- 1...Re3
- 2.Rc4#
- 1...Rcf3
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rf1
- 2.Se6#
- 1...Rf2
- 2.Se6#
- 1...Rff3
- 2.Se6#
- 1...Rf4
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Rd6
- 2.Qa7#
- 1...Re6
- 2.Sxe6#
- 1...Rf7
- 2.Se6#
- 1...Sa1
- 2.Qb4#
- 1...Se1
- 2.Qb4#
- 1...Sa3
- 2.Qb4#
- 1...Se3
- 2.Qb4#
- 1...Sd4
- 2.Qb4#
- 1...Rh3+!
- 1...Rf8+
- 1.Sf3?
- threat
- 2.Ra5#
- 1...Rf8+
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rcxf3
- 2.Rc4#
- 1...Ra3
- 2.Rc4#
- 1...Rb3
- 2.Rc4#
- 1...Sa3
- 2.Qb4#
- 1...Sd4
- 2.Qb4#
- 1...Rfxf3!
- threat
- 1.Sf7?
- threat
- 2.Qa7#
- 1...Rb3
- 2.Rc4#
- 1...Rxf7!
- threat
- 1.Bf1?
- 1...Rf8+
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rxf1
- 2.Se6#
- 1...Rc4
- 2.Rxc4#
- 1...Sb4
- 2.Qxb4#
- 1...Ra3
- 2.Rc4#
- 1...Rb3
- 2.Rc4#
- 1...Re3
- 2.Rc4#
- 1...Rcf3
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rh3
- 2.Rc4#
- 1...Rf2
- 2.Se6#
- 1...Rff3
- 2.Se6#
- 1...Rf4
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Rd6
- 2.Qa7#
- 1...Re6
- 2.Sxe6#
- 1...Rf7
- 2.Se6#
- 1...Sa1
- 2.Qb4#
- 1...Se1
- 2.Qb4#
- 1...Sa3
- 2.Qb4#
- 1...Se3
- 2.Qb4#
- 1...Sd4
- 2.Qb4#
- 1...Rd3!
- 1...Rf8+
- 1.Be2?
- 1...Rf8+
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rc4
- 2.Rxc4#
- 1...Sb4
- 2.Qxb4#
- 1...Rf1
- 2.Se6#
- 1...Ra3
- 2.Rc4#
- 1...Rb3
- 2.Rc4#
- 1...Re3
- 2.Rc4#
- 1...Rcf3
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rh3
- 2.Rc4#
- 1...Rf2
- 2.Se6#
- 1...Rff3
- 2.Se6#
- 1...Rf4
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Rd6
- 2.Qa7#
- 1...Re6
- 2.Sxe6#
- 1...Rf7
- 2.Se6#
- 1...Sa1
- 2.Qb4#
- 1...Se1
- 2.Qb4#
- 1...Sa3
- 2.Qb4#
- 1...Se3
- 2.Qb4#
- 1...Sd4
- 2.Qb4#
- 1...Rd3!
- 1...Rf8+
- 1.Bd3?
- 1...Rf8+
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rc4
- 2.Rxc4#
- 1...Sb4
- 2.Qxb4#
- 1...Rf1
- 2.Se6#
- 1...Ra3
- 2.Rc4#
- 1...Rb3
- 2.Rc4#
- 1...Rf2
- 2.Se6#
- 1...Rf3
- 2.Se6#
- 1...Rf4
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Rd6
- 2.Qa7#
- 1...Re6
- 2.Sxe6#
- 1...Rf7
- 2.Se6#
- 1...Sa1
- 2.Qb4#
- 1...Se1
- 2.Qb4#
- 1...Sa3
- 2.Qb4#
- 1...Se3
- 2.Qb4#
- 1...Sd4
- 2.Qb4#
- 1...Rxd3!
- 1...Rf8+
- 1.Kh7?
- Keys
- 1.Qd8!
- 1...Rf8+
- 2.gxf8Q#
- 2.gxf8B#
- 1...Rf1
- 2.Se6#
- 1...Ra3
- 2.Rc4#
- 1...Rb3
- 2.Rc4#
- 1...Rd3
- 2.Rc4#
- 1...Re3
- 2.Rc4#
- 1...Rcf3
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rh3
- 2.Rc4#
- 1...Rc4
- 2.Rxc4#
- 1...Rf2
- 2.Se6#
- 1...Rff3
- 2.Se6#
- 1...Rf4
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Rd6
- 2.Qa5#
- 1...Re6
- 2.Sxe6#
- 1...Rf7
- 2.Se6#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Se3
- 2.Qd4#
- 1...Sb4
- 2.Ra5#
- 1...Sd4
- 2.Qxd4#
- 1...Rf8+
- 1.Qd8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(b);N_GUARD::R1(A)
- R(b);N_GUARD::R1(A),XR(b)
- R(e);N_GUARD::S(C)
- R(e);SBLOCK::QAB(F)
- R(e);N_GUARD::S(C),XR(e)
- R(e);CHECK,OGATE::PXR(e)=Q
- S(a);N_GUARD::QAB1(F)
- S(a);N_GUARD::QAB1(F),XS(a)
- Tries
- Try
- K(G);S_FLIGHT
- Vars
- R(b);N_GUARD::R1(A),XR(b)
- S(a);N_GUARD::QAB1(F),XS(a)
- R(b);N_GUARD::R1(A)
- R(e);N_GUARD::S(C)
- R(e);SBLOCK::QAB(F)
- R(e);N_GUARD::S(C),XR(e)
- R(e);N_GUARD,P_PINP(E)::S(C)
- S(a);N_GUARD::QAB1(F)
- Refutation
- R(b);CHECK
- Try
- K(G);P-FLIGHT
- Vars
- R(e);CHECK,OGATE::PXR(e)=Q
- R(b);N_GUARD::R1(A),XR(b)
- S(a);N_GUARD::QAB1(F),XS(a)
- R(b);N_GUARD::R1(A)
- R(e);N_GUARD::S(C)
- R(e);SBLOCK::QAB(F)
- R(e);N_GUARD::S(C),XR(e)
- S(a);N_GUARD::QAB1(F)
- Refutation
- R(b);CHECK
- Try
- S(C);
- Threat
- R(A)
- Vars
- R(e);CHECK,OGATE::PXR(e)=Q
- R(b);N_GUARD,XS(C)::R1(A)
- R(b);N_GUARD::R1(A)
- S(a);N_GUARD::QAB1(F)
- Refutation
- R(e);XS(C)
- Try
- S(C);
- Threat
- QAB(F)
- Vars
- R(b);N_GUARD::R1(A)
- Refutation
- R(e);XS(C)
- Try
- B(D);
- Vars
- R(e);CHECK,OGATE::PXR(e)=Q
- R(e);N_GUARD,XB(D)::S(C)
- R(b);N_GUARD::R1(A),XR(b)
- S(a);N_GUARD::QAB1(F),XS(a)
- R(b);N_GUARD::R1(A)
- R(e);N_GUARD::S(C)
- R(e);SBLOCK::QAB(F)
- R(e);N_GUARD::S(C),XR(e)
- S(a);N_GUARD::QAB1(F)
- Refutation
- R(b);
- Try
- B(D);
- Vars
- R(e);CHECK,OGATE::PXR(e)=Q
- R(b);N_GUARD::R1(A),XR(b)
- S(a);N_GUARD::QAB1(F),XS(a)
- R(e);N_GUARD::S(C)
- R(b);N_GUARD::R1(A)
- R(e);SBLOCK::QAB(F)
- R(e);N_GUARD::S(C),XR(e)
- S(a);N_GUARD::QAB1(F)
- Refutation
- R(b);
- Try
- B(D);
- Vars
- R(e);CHECK,OGATE::PXR(e)=Q
- R(b);N_GUARD::R1(A),XR(b)
- S(a);N_GUARD::QAB1(F),XS(a)
- R(e);N_GUARD::S(C)
- R(b);N_GUARD::R1(A)
- R(e);SBLOCK::QAB(F)
- R(e);N_GUARD::S(C),XR(e)
- S(a);N_GUARD::QAB1(F)
- Refutation
- R(b);XB(D)
- Try
- Actual
- Q(F);
- Vars
- R(e);CHECK,OGATE::PXR(e)=Q
- R(e);N_GUARD::S(C)
- R(b);N_GUARD::R1(A)
- R(b);N_GUARD::R1(A),XR(b)
- R(e);SBLOCK::QAR2(F)
- R(e);N_GUARD::S(C),XR(e)
- S(a);N_GUARD::QAB1(F)
- S(a);SBLOCK::R(A)
- S(a);N_GUARD::QAB1(F),XS(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).