MESON Chess Problem Database
Problem Display
PID: 178720 (8/1K6/2R1P3/3kPNN1/3P2p1/3nr1P1/3b1Q2/8 w - - 0 1)
Maleika, Gerhard
6th Comm., Problem Observer Block-Threat Ty., 2009-2010
#2
9 + 5
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Se7#
- 1...Re2
- 2.Se7#
- 1...Rf3
- 2.Se7#
- 1...Rxg3
- 2.Se7#
- 1...Re4
- 2.Se7#
- 1...Rxe5
- 2.Se7#
- 1...Bc1
- 2.Qa2#
- 1...Be1
- 2.Qa2#
- 1...Bc3
- 2.Qa2#
- 1...Bb4
- 2.Qa2#
- 1...Ba5
- 2.Qa2#
- 1...Sc1
- 2.Rc5#
- 1...Se1
- 2.Rc5#
- 1...Sb2
- 2.Rc5#
- 1...Sxf2
- 2.Rc5#
- 1...Sb4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Sc5+
- 2.Rxc5#
- 1...Sxe5
- 2.Rc5#
- 1...Re1
- Tries
- 1.Kb6?
- 1...Rxg3
- 2.Se7#
- 1...Rxe5
- 2.Se7#
- 1...Sxf2
- 2.Rc5#
- 1...Sxe5
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Re1
- 2.Se7#
- 1...Re2
- 2.Se7#
- 1...Rf3
- 2.Se7#
- 1...Re4
- 2.Se7#
- 1...Bc1
- 2.Qa2#
- 1...Be1
- 2.Qa2#
- 1...Bc3
- 2.Qa2#
- 1...Bb4
- 2.Qa2#
- 1...Sc1
- 2.Rc5#
- 1...Se1
- 2.Rc5#
- 1...Sb2
- 2.Rc5#
- 1...Sb4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Ba5+!
- 1...Rxg3
- 1.Kc7?
- 1...Rxg3
- 2.Se7#
- 1...Rxe5
- 2.Se7#
- 1...Sxf2
- 2.Rc5#
- 1...Sxe5
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Re1
- 2.Se7#
- 1...Re2
- 2.Se7#
- 1...Rf3
- 2.Se7#
- 1...Re4
- 2.Se7#
- 1...Bc1
- 2.Qa2#
- 1...Be1
- 2.Qa2#
- 1...Bc3
- 2.Qa2#
- 1...Bb4
- 2.Qa2#
- 1...Sc1
- 2.Rc5#
- 1...Se1
- 2.Rc5#
- 1...Sb2
- 2.Rc5#
- 1...Sb4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Ba5+!
- 1...Rxg3
- 1.Sh7?
- threat
- 2.Sf6#
- 1...Ke4
- 2.Sf6#
- 1...Sc5+!
- threat
- 1.Rc3?
- 1...Sc5+
- 2.Rxc5#
- 1...Rxg3
- 2.Se7#
- 1...Bxc3
- 2.Qa2#
- 1...Sxf2
- 2.Rc5#
- 1...Sxe5
- 2.Rc5#
- 1...Bc1
- 2.Qa2#
- 1...Re1
- 2.Se7#
- 1...Re2
- 2.Se7#
- 1...Rf3
- 2.Se7#
- 1...Re4
- 2.Se7#
- 1...Be1
- 2.Qa2#
- 1...Sc1
- 2.Rc5#
- 1...Se1
- 2.Rc5#
- 1...Sb2
- 2.Rc5#
- 1...Sb4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Rxe5!
- 1...Sc5+
- 1.Rc7?
- 1...Sc5+
- 2.Rxc5#
- 1...Rxg3
- 2.Se7#
- 1...Sxf2
- 2.Rc5#
- 1...Sxe5
- 2.Rc5#
- 1...Bc1
- 2.Qa2#
- 1...Re1
- 2.Se7#
- 1...Re2
- 2.Se7#
- 1...Rf3
- 2.Se7#
- 1...Re4
- 2.Se7#
- 1...Be1
- 2.Qa2#
- 1...Bc3
- 2.Qa2#
- 1...Bb4
- 2.Qa2#
- 1...Ba5
- 2.Qa2#
- 1...Sc1
- 2.Rc5#
- 1...Se1
- 2.Rc5#
- 1...Sb2
- 2.Rc5#
- 1...Sb4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Rxe5!
- 1...Sc5+
- 1.Rc8?
- 1...Sc5+
- 2.Rxc5#
- 1...Rxg3
- 2.Se7#
- 1...Sxf2
- 2.Rc5#
- 1...Sxe5
- 2.Rc5#
- 1...Bc1
- 2.Qa2#
- 1...Re1
- 2.Se7#
- 1...Re2
- 2.Se7#
- 1...Rf3
- 2.Se7#
- 1...Re4
- 2.Se7#
- 1...Be1
- 2.Qa2#
- 1...Bc3
- 2.Qa2#
- 1...Bb4
- 2.Qa2#
- 1...Ba5
- 2.Qa2#
- 1...Sc1
- 2.Rc5#
- 1...Se1
- 2.Rc5#
- 1...Sb2
- 2.Rc5#
- 1...Sb4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Rxe5!
- 1...Sc5+
- 1.Qxe3?
- threat
- 2.Se7#
- 2.Qe4#
- 1...Sc5+
- 2.Rxc5#
- 1...Bb4
- 2.Qe4#
- 1...Sf2
- 2.Se7#
- 2.Rc5#
- 2.Qb3#
- 1...Bxe3!
- threat
- 1.Qxd2?
- threat
- 2.Qa2#
- 1...Sc5+
- 2.Rxc5#
- 1...Sxe5
- 2.Sxe3#
- 2.Se7#
- 2.Rc5#
- 2.Qa5#
- 1...Sc1
- 2.Sxe3#
- 2.Se7#
- 2.Rc5#
- 2.Qa5#
- 1...Se1
- 2.Sxe3#
- 2.Se7#
- 2.Rc5#
- 2.Qa5#
- 1...Sb2
- 2.Sxe3#
- 2.Se7#
- 2.Rc5#
- 2.Qa5#
- 1...Sf2
- 2.Sxe3#
- 2.Se7#
- 2.Rc5#
- 2.Qa5#
- 1...Sb4
- 2.Sxe3#
- 2.Se7#
- 2.Rc5#
- 1...Sf4
- 2.Sxe3#
- 2.Se7#
- 2.Rc5#
- 2.Qa5#
- 1...Re2!
- threat
- 1.Qg2+?
- 1...Re4
- 2.Qxe4#
- 1...Rf3!
- 1...Re4
- 1.Kb6?
- Keys
- 1.Qf4!
- threat
- 2.Se7#
- 1...Sc5+
- 2.Rxc5#
- 1...Sxf4
- 2.Rc5#
- 1...Re4
- 2.Qxe4#
- 1...Bb4
- 2.Sxe3#
- threat
- 1.Qf4!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 15
- Sets
- R(c);::S(E)
- R(c);XP(B)::S(E)
- R(c);XP(D)::S(E)
- B(a);OGATE::QAB(A)
- S(b);N_GUARD::R1(G)
- S(b);N_GUARD,XQ(A)::R1(G)
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- S(b);N_GUARD,XP(D)::R1(G)
- Tries
- Try
- K(I);P-FLIGHT
- Vars
- R(c);XP(B)::S(E)
- R(c);XP(D)::S(E)
- S(b);N_GUARD,XQ(A)::R1(G)
- S(b);N_GUARD,XP(D)::R1(G)
- S(b);N_GUARD::R1(G),XS(b)
- R(c);::S(E)
- B(a);OGATE::QAB(A)
- S(b);N_GUARD::R1(G)
- Refutation
- B(a);CHECK
- Try
- K(I);P-FLIGHT
- Vars
- R(c);XP(B)::S(E)
- R(c);XP(D)::S(E)
- S(b);N_GUARD,XQ(A)::R1(G)
- S(b);N_GUARD,XP(D)::R1(G)
- S(b);N_GUARD::R1(G),XS(b)
- R(c);::S(E)
- B(a);OGATE::QAB(A)
- S(b);N_GUARD::R1(G)
- Refutation
- B(a);CHECK
- Try
- S(F);
- Threat
- S(F)
- Vars
- K(e);S_FLIGHT::S(F)
- Refutation
- S(b);CHECK
- Try
- R(G);
- Vars
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- R(c);XP(B)::S(E)
- B(a);OGATE,XR(G)::QAB(A)
- S(b);N_GUARD,XQ(A)::R1(G)
- S(b);N_GUARD,XP(D)::R1(G)
- B(a);OGATE::QAB(A)
- R(c);::S(E)
- S(b);N_GUARD::R1(G)
- Refutation
- R(c);XP(D)
- Try
- R(G);
- Vars
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- R(c);XP(B)::S(E)
- S(b);N_GUARD,XQ(A)::R1(G)
- S(b);N_GUARD,XP(D)::R1(G)
- B(a);OGATE::QAB(A)
- R(c);::S(E)
- S(b);N_GUARD::R1(G)
- Refutation
- R(c);XP(D)
- Try
- R(G);
- Vars
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- R(c);XP(B)::S(E)
- S(b);N_GUARD,XQ(A)::R1(G)
- S(b);N_GUARD,XP(D)::R1(G)
- B(a);OGATE::QAB(A)
- R(c);::S(E)
- S(b);N_GUARD::R1(G)
- Refutation
- R(c);XP(D)
- Try
- Q(A);XR(c)
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- B(a);::QAB1(A)
- Refutation
- B(a);XQ(A)
- Try
- Q(A);XB(a)
- Threat
- QAB(A)
- Vars
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- Refutation
- R(c);
- Try
- Q(A);CHECK
- Vars
- R(c);N_GUARD,P_SPINR(c)::QAB1(A),XR(c)
- Refutation
- R(c);P_SPINR(c)
- Try
- Actual
- Q(A);
- Threat
- S(E)
- Vars
- S(b);CHECK,N_GUARD::R1(G),XS(b)
- S(b);N_GUARD,XQ(A)::R1(G)
- R(c);N_GUARD::QAB1(A),XR(c)
- B(a);N_GUARD::S(E),XR(c)
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).