MESON Chess Problem Database
Problem Display
PID: 203043 (4B3/8/6rp/R5n1/7k/Q1R5/4N2N/K7 w - - 0 1)
Salazar Lopez, Francisco
The Problemist, 1983
#2
7 + 4
SOLUTION
- SOUND
- Sets
- 1...Kh5
- 2.Rh3#
- 1...Sh3
- 2.Rxh3#
- 1...Se4
- 2.Rh3#
- 1...Se6
- 2.Rh3#
- 1...Sf7
- 2.Rh3#
- 1...Sh7
- 2.Rh3#
- 1...Kh5
- Tries
- 1.Sf4?
- 1...Ra6
- 2.Sg2#
- 1...Rb6
- 2.Sg2#
- 1...Rc6
- 2.Sg2#
- 1...Rd6
- 2.Sg2#
- 1...Re6
- 2.Sg2#
- 1...Rf6
- 2.Sg2#
- 1...Rg7
- 2.Sg2#
- 1...Rg8
- 2.Sg2#
- 1...Sh3
- 2.Sxg6#
- 2.Rxh3#
- 2.Rh5#
- 1...Se4
- 2.Sxg6#
- 2.Rh3#
- 2.Rh5#
- 1...Se6
- 2.Sxg6#
- 2.Rh3#
- 2.Rh5#
- 1...Sf7
- 2.Sxg6#
- 2.Rh3#
- 2.Rh5#
- 1...Sh7
- 2.Sxg6#
- 2.Rh3#
- 2.Rh5#
- 1...h5
- 2.Sg2#
- 2.Sxg6#
- 1...Sf3!
- 1...Ra6
- 1.Bxg6?
- 1...Sf3
- 2.Rh5#
- 1...Sh3
- 2.Rxh3#
- 2.Rh5#
- 1...Se4
- 2.Rh3#
- 2.Rh5#
- 1...Se6
- 2.Rh3#
- 2.Rh5#
- 1...Sf7
- 2.Rh3#
- 2.Rc4#
- 2.Rh5#
- 2.Qb4#
- 2.Qa4#
- 1...Sh7
- 2.Rh3#
- 2.Rc4#
- 2.Rh5#
- 2.Qb4#
- 2.Qa4#
- 1...h5!
- 1...Sf3
- 1.Rg3?
- 1...Kh5
- 2.Rh3#
- 1...Ra6
- 2.Rg4#
- 1...Rb6
- 2.Rg4#
- 1...Rc6
- 2.Rg4#
- 1...Rd6
- 2.Rg4#
- 1...Re6
- 2.Rg4#
- 1...Rf6
- 2.Rg4#
- 1...Rg7
- 2.Rg4#
- 1...Rg8
- 2.Rg4#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 2.Rxh3#
- 1...Se4
- 2.Sf3#
- 2.Rh3#
- 1...Se6
- 2.Sf3#
- 2.Rh3#
- 1...Sf7
- 2.Sf3#
- 2.Rh3#
- 1...Sh7
- 2.Sf3#
- 2.Rh3#
- 1...h5!
- 1...Kh5
- 1.Rc4+?
- 1...Kh5
- 2.Sg3#
- 2.Qf3#
- 2.Qh3#
- 1...Se4!
- 1...Kh5
- 1.Ra4+?
- 1...Kh5
- 2.Sg3#
- 1...Se4!
- 1...Kh5
- 1.Qb4+?
- 1...Kh5
- 2.Sg3#
- 2.Rh3#
- 2.Qg4#
- 1...Se4!
- 1...Kh5
- 1.Qc5?
- 1...Kh5
- 2.Rh3#
- 1...Ra6
- 2.Qf2#
- 1...Rb6
- 2.Qf2#
- 1...Rc6
- 2.Qf2#
- 1...Rd6
- 2.Qf2#
- 1...Re6
- 2.Qf2#
- 1...Rg7
- 2.Qf2#
- 1...Rg8
- 2.Qf2#
- 1...Sf3
- 2.Qh5#
- 1...Sh3
- 2.Qh5#
- 1...Se4
- 2.Qh5#
- 1...Se6
- 2.Qh5#
- 1...Sf7
- 2.Qh5#
- 1...Sh7
- 2.Qh5#
- 1...h5
- 2.Qf2#
- 1...Rf6!
- 1...Kh5
- 1.Qa4+?
- 1...Kh5
- 2.Sg3#
- 2.Rh3#
- 2.Qg4#
- 1...Se4!
- 1...Kh5
- 1.Sf4?
- Keys
- 1.Rcc5!
- 1...Kh5
- 2.Qh3#
- 1...Ra6
- 2.Qg3#
- 1...Rb6
- 2.Qg3#
- 1...Rc6
- 2.Qg3#
- 1...Rd6
- 2.Qg3#
- 1...Re6
- 2.Qg3#
- 1...Rf6
- 2.Qg3#
- 1...Rg7
- 2.Qg3#
- 1...Rg8
- 2.Qg3#
- 1...Sf3
- 2.Rh5#
- 1...Sh3
- 2.Rh5#
- 1...Se4
- 2.Rh5#
- 1...Se6
- 2.Rh5#
- 1...Sf7
- 2.Rh5#
- 1...Sh7
- 2.Rh5#
- 1...h5
- 2.Qg3#
- 1...Kh5
- 1.Rcc5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 6
- ADDED MATES = 10
- REMOVED MATES = 0
- Sets
- K(a);P-FLIGHT,P_SPINR(c),P_SPINS(b)::R(E)
- S(b);N_GUARD::R1(E),XS(b)
- S(b);N_GUARD::R1(E)
- Tries
- Try
- S(B);
- Vars
- R(c);::S(B)
- Refutation
- S(b);
- Try
- B(G);XR(c)
- Vars
- S(b);OGATE::R1(F)
- Refutation
- P(d);
- Try
- R(E);
- Vars
- K(a);P-FLIGHT,P_SPINR(c),P_SPINS(b)::R(E)
- R(c);::R1(E)
- S(b);N_GUARD::S(C),XS(b)
- Refutation
- P(d);
- Try
- R(E);CHECK
- Refutation
- S(b);P_SPINS(b)
- Try
- R(F);CHECK
- Vars
- K(a);P-FLIGHT,P_SPINR(c)::S(B)
- Refutation
- S(b);P_SPINS(b)
- Try
- Q(D);CHECK
- Refutation
- S(b);P_SPINS(b)
- Try
- Q(D);
- Vars
- K(a);P-FLIGHT,P_SPINR(c),P_SPINS(b)::R(E)
- R(c);P_PINR(F)::QAB(D)
- R(c);::QAB(D)
- S(b);OGATE::QAR1(D)
- P(d);SBLOCK::QAB(D)
- Refutation
- R(c);
- Try
- Q(D);CHECK
- Refutation
- S(b);P_SPINS(b)
- Try
- Actual
- R(E);
- Vars
- K(a);P-FLIGHT,P_SPINR(c),P_SPINS(b)::QAR2(D)
- R(c);::QAB1(D)
- S(b);OGATE::R1(E)
- P(d);SBLOCK::QAB1(D)
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).