MESON Chess Problem Database
Problem Display
PID: 51328 (b1q3NB/3r4/5R2/R1nrkN2/2Q5/3P4/2K5/8 w - - 0 1)
Andrade, Barry Jack da Costa
Manchester Guardian, 1957
#2
8 + 6
SOLUTION
- SOUND
- Sets
- 1...Rxd3
- 2.Rf7#
- 1...Rxd3
- Tries
- 1.Se3?
- threat
- 2.Sg4#
- 2.Qf4#
- 1...Qxg8
- 2.Qf4#
- 1...Sxd3
- 2.Sg4#
- 1...Rd4
- 2.Qe6#
- 1...R7d6
- 2.Qf4#
- 1...Ra7
- 2.Qf4#
- 1...Rb7
- 2.Qxd5#
- 2.Qf4#
- 1...Rc7
- 2.Qf4#
- 1...Re7
- 2.Qf4#
- 1...Rf7
- 2.Qf4#
- 1...Rg7
- 2.Qf4#
- 1...Rh7
- 2.Qf4#
- 1...Rd8
- 2.Rfa6#
- 2.Rb6#
- 2.Rc6#
- 2.Rg6#
- 2.Rh6#
- 2.Qf4#
- 1...Sb3
- 2.Sg4#
- 1...Sa4
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 2.d4#
- 1...Sa6
- 2.Sg4#
- 1...Sb7
- 2.Sg4#
- 1...Se6!
- threat
- 1.Sd4?
- threat
- 2.Sf3#
- 1...Rxd4
- 2.Qe6#
- 1...R5d6
- 2.Rf5#
- 1...Se6!
- threat
- 1.Sh4?
- threat
- 2.Sf3#
- 2.Sg6#
- 2.Qf4#
- 1...Qxg8
- 2.Sf3#
- 2.Qf4#
- 1...Rxd3
- 2.Sg6#
- 2.Re6#
- 1...Sxd3
- 2.Sf3#
- 2.Sg6#
- 1...Qe8
- 2.Sf3#
- 2.Qf4#
- 1...Rd4
- 2.Sg6#
- 2.Qe6#
- 1...R5d6
- 2.Sg6#
- 2.Rf5#
- 2.Re6#
- 1...Rg7
- 2.Sf3#
- 2.Qf4#
- 1...Sb3
- 2.Sf3#
- 2.Sg6#
- 1...Sa4
- 2.Sf3#
- 2.Sg6#
- 1...Se4
- 2.Sf3#
- 2.Sg6#
- 2.d4#
- 1...Sa6
- 2.Sf3#
- 2.Sg6#
- 1...Sb7
- 2.Sf3#
- 2.Sg6#
- 1...Se6!
- threat
- 1.Sfh6?
- threat
- 2.Sg4#
- 2.Qf4#
- 1...Qxg8
- 2.Qf4#
- 1...Rxd3
- 2.Sg4#
- 2.Re6#
- 1...Sxd3
- 2.Sg4#
- 1...Rd4
- 2.Qe6#
- 1...R5d6
- 2.Sg4#
- 2.Rf5#
- 2.Re6#
- 1...R7d6
- 2.Sf7#
- 2.Qf4#
- 1...Ra7
- 2.Qf4#
- 1...Rb7
- 2.Qf4#
- 1...Rc7
- 2.Qf4#
- 1...Re7
- 2.Qf4#
- 1...Rf7
- 2.Sxf7#
- 2.Qf4#
- 1...Rg7
- 2.Qf4#
- 1...Rh7
- 2.Qf4#
- 1...Rd8
- 2.Sf7#
- 2.Rfa6#
- 2.Rb6#
- 2.Rc6#
- 2.Rg6#
- 2.Qf4#
- 1...Sb3
- 2.Sg4#
- 1...Sa4
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 2.d4#
- 1...Sa6
- 2.Sg4#
- 1...Sb7
- 2.Sg4#
- 1...Se6!
- threat
- 1.Sfe7?
- threat
- 2.Sg6#
- 2.Rfa6#
- 2.Rb6#
- 2.Rc6#
- 2.Rg6#
- 2.Rh6#
- 2.Qf4#
- 1...Qxg8
- 2.Qf4#
- 1...Rxe7
- 2.Qf4#
- 1...Sxd3
- 2.Sg6#
- 2.Rfa6#
- 2.Rb6#
- 2.Rc6#
- 2.Rg6#
- 2.Rh6#
- 1...Qa6
- 2.Sg6#
- 2.Rfxa6#
- 2.Rb6#
- 2.Rc6#
- 2.Qf4#
- 1...Qc6
- 2.Sg6#
- 2.Rxc6#
- 2.Qf4#
- 1...Qe8
- 2.Rfa6#
- 2.Rb6#
- 2.Rc6#
- 2.Rg6#
- 2.Rh6#
- 2.Qf4#
- 1...Qf8
- 2.Sg6#
- 2.Qf4#
- 1...Rd4
- 2.Sg6#
- 2.Qe6#
- 1...R5d6
- 2.Sg6#
- 2.Rf5#
- 2.Re6#
- 2.Qf4#
- 1...R7d6
- 2.Sg6#
- 2.Qf4#
- 1...Bc6
- 2.Sg6#
- 2.Rxc6#
- 2.Rg6#
- 2.Rh6#
- 2.Qf4#
- 1...Sb3
- 2.Sg6#
- 2.Rfa6#
- 2.Rb6#
- 2.Rc6#
- 2.Rg6#
- 2.Rh6#
- 1...Sa4
- 2.Sg6#
- 2.Rfa6#
- 2.Rb6#
- 2.Rc6#
- 2.Rg6#
- 2.Rh6#
- 1...Se4
- 2.Sg6#
- 2.d4#
- 1...Sa6
- 2.Sg6#
- 2.Rfxa6#
- 2.Rb6#
- 2.Rc6#
- 2.Rg6#
- 2.Rh6#
- 1...Sb7
- 2.Sg6#
- 2.Rfa6#
- 2.Rb6#
- 2.Rc6#
- 2.Rg6#
- 2.Rh6#
- 1...Se6!
- threat
- 1.Rxc5?
- threat
- 2.Qd4#
- 2.Qe4#
- 1...Rxc5
- 2.Rf7#
- 1...Qxc5!
- threat
- 1.Rg6+?
- 1...Kxf5
- 2.Qg4#
- 1...Rg7!
- 1...Kxf5
- 1.Se3?
- Keys
- 1.Sg7!
- threat
- 2.Qf4#
- 1...Rxd3
- 2.Re6#
- 1...Sxd3
- 2.Re6#
- 1...Se6
- 2.Rxe6#
- 1...Rd4
- 2.Qe6#
- 1...R5d6
- 2.Rf5#
- 1...Sb3
- 2.Re6#
- 1...Sa4
- 2.Re6#
- 1...Se4
- 2.d4#
- 1...Sa6
- 2.Re6#
- 1...Sb7
- 2.Re6#
- threat
- 1.Sg7!
This is a version of 132219
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- R(b);P_SPINS(a),XP(B)::B(H)+R(F)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(f);XS(G)::QAB1(C)
- S(a);P_PINQ(C),P_SPINR(b),XP(B)::S(E)
- R(b);OGATE,P_SPINS(a),SBLOCK::QAR1(C)
- R(d);::QAB1(C)
- S(a);P_PINQ(C),P_SPINR(b)::S(E)
- Refutation
- S(a);P_PINQ(C),P_SPINR(b)
- Try
- S(E);
- Threat
- S(E)
- Vars
- R(b);OGATE,P_SPINS(a),SBLOCK,XS(E)::QAR1(C)
- R(b);P_SPINS(a),SBLOCK::B(H)+R(F),DCHECK
- Refutation
- S(a);P_PINQ(C),P_SPINR(b)
- Try
- S(E);
- Threat
- DUALS(3)
- Refutation
- S(a);P_PINQ(C),P_SPINR(b)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(f);XS(G)::QAB1(C)
- S(a);P_PINQ(C),P_SPINR(b),XP(B)::S(E)
- R(b);OGATE,P_SPINS(a),SBLOCK::QAR1(C)
- R(d);::QAB1(C)
- S(a);P_PINQ(C),P_SPINR(b)::S(E)
- Refutation
- S(a);P_PINQ(C),P_SPINR(b)
- Try
- S(E);
- Threat
- DUALS(7)
- Vars
- Q(f);XS(G)::QAB1(C)
- R(d);XS(E)::QAB1(C)
- Refutation
- S(a);P_PINQ(C),P_SPINR(b)
- Try
- R(D);P_PINR(b),XS(a)
- Threat
- DUALS(2)
- Vars
- R(b);N_SPINR(b),P_PINQ(C),XR(D)::B(H)+R(F)
- Refutation
- Q(f);N_SPINR(b),P_PINQ(C),XR(D)
- Try
- R(F);CHECK
- Vars
- K(c);P-FLIGHT,XS(E)::QAB1(C)
- Refutation
- R(d);P_SPINR(d)
- Try
- Actual
- S(E);
- Threat
- QAB1(C)
- Vars
- R(b);P_SPINS(a),XP(B)::R1(F)
- S(a);N_GUARD,P_PINQ(C),P_SPINR(b),XP(B)::R1(F)
- S(a);N_GUARD,P_PINQ(C),P_SPINR(b)::R1(F),XS(a)
- R(b);OGATE,P_SPINS(a),SBLOCK::QAR1(C)
- R(b);P_SPINS(a),SBLOCK::R1(F)
- S(a);N_GUARD,P_PINQ(C),P_SPINR(b)::R1(F)
- S(a);P_PINQ(C),P_SPINR(b),SBLOCK::P(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).