MESON Chess Problem Database
Problem Display
PID: 277119 (2K1RnB1/8/2Pk2r1/p4Qpr/qP1N1P1p/7b/4P3/1nR3B1 w - - 0 1)
Chobanyan, Shamil
Phenix, 2005
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Sb5#
- 1...Qb3
- 2.Sb5#
- 1...Qb5
- 2.Sxb5#
- 1...Qxc6+
- 2.Rxc6#
- 1...Qa1
- 2.Sb5#
- 1...Qa2
- 2.Sb5#
- 1...Qa3
- 2.Sb5#
- 1...Re6
- 2.Qc5#
- 1...Bf1
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 2.Qxf8#
- 1...Bg2
- 2.Qc5#
- 2.Qe5#
- 2.Qxf8#
- 1...Bxf5+
- 2.Sxf5#
- 1...Se6
- 2.Qe5#
- 1...Sd7
- 2.Qd5#
- 1...g4
- 2.Qxf8#
- 1...Qd1
- Tries
- 1.Kd8?
- threat
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 2.Qxf8#
- 1...Qxc6
- 2.Rxc6#
- 2.Qe5#
- 2.Qxf8#
- 1...Qxb4
- 2.Qd5#
- 2.Qe5#
- 2.Qxf8#
- 1...Rxg8
- 2.Qc5#
- 2.Qe5#
- 1...Bxf5
- 2.Sxf5#
- 1...gxf4
- 2.Qxf8#
- 1...Qc2
- 2.Qd5#
- 2.Qe5#
- 2.Qxf8#
- 1...Qb3
- 2.Sb5#
- 2.Qc5#
- 2.Qe5#
- 2.Qxf8#
- 1...Qb5
- 2.Sxb5#
- 2.Qxf8#
- 1...Qa2
- 2.Sb5#
- 2.Qc5#
- 2.Qe5#
- 2.Qxf8#
- 1...Rh7
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Re6
- 2.Qc5#
- 1...Rf6
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Rg7
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Bg2
- 2.Qc5#
- 2.Qe5#
- 2.Qxf8#
- 1...Sc3
- 2.Qc5#
- 2.Qe5#
- 2.Qxf8#
- 1...Sd7
- 2.Qd5#
- 1...Sh7
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...g4
- 2.Qxf8#
- 1...Se6+!
- threat
- 1.Be6?
- threat
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 2.Qxf8#
- 1...Qxc6+
- 2.Rxc6#
- 1...Qxb4
- 2.Qd5#
- 2.Qe5#
- 2.Qxf8#
- 1...Rxe6
- 2.Qc5#
- 1...Bxf5
- 2.Sxf5#
- 1...Sxe6
- 2.Qe5#
- 1...Qc2
- 2.Qd5#
- 2.Qe5#
- 2.Qxf8#
- 1...Qb3
- 2.Sb5#
- 2.Qc5#
- 2.Qe5#
- 2.Qxf8#
- 1...Qb5
- 2.Sxb5#
- 2.Qxf8#
- 1...Qa2
- 2.Sb5#
- 2.Qc5#
- 2.Qe5#
- 2.Qxf8#
- 1...Rh7
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Rh8
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Rf6
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Rg7
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Rg8
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Bg2
- 2.Qc5#
- 2.Qe5#
- 2.Qxf8#
- 1...Sc3
- 2.Qc5#
- 2.Qe5#
- 2.Qxf8#
- 1...Sd7
- 2.Qd5#
- 1...Sh7
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...g4
- 2.Qxf8#
- 1...gxf4!
- threat
- 1.Rc5?
- threat
- 2.Rd5#
- 1...Qxc6+
- 2.Rxc6#
- 1...Bxf5+
- 2.Sxf5#
- 1...Qb3
- 2.Sb5#
- 1...Qb5
- 2.Sxb5#
- 1...Qa2
- 2.Sb5#
- 1...Bg2
- 2.Qe5#
- 2.Qxf8#
- 1...Sc3!
- threat
- 1.Re6+?
- 1...Rxe6
- 2.Qc5#
- 1...Sxe6!
- 1...Rxe6
- 1.Rd8+?
- 1...Sd7
- 2.Rxd7#
- 2.Qc5#
- 2.Qe5#
- 2.Qf8#
- 1...Ke7!
- 1...Sd7
- 1.e4?
- threat
- 2.e5#
- 2.e4#
- 1...Qxc6+
- 2.Rxc6#
- 1...Bxf5+
- 2.Sxf5#
- 1...Qxb4
- 2.e5#
- 1...axb4
- 2.e5#
- 1...gxf4
- 2.e5#
- 1...Qd1
- 2.Sb5#
- 2.e5#
- 1...Qc2
- 2.e5#
- 1...Qb3
- 2.Sb5#
- 2.e5#
- 1...Qb5
- 2.Sxb5#
- 1...Qa1
- 2.Sb5#
- 2.e5#
- 1...Qa2
- 2.Sb5#
- 2.e5#
- 1...Qa3
- 2.Sb5#
- 2.e5#
- 1...Rhh6
- 2.e5#
- 1...Rh7
- 2.e5#
- 1...Rh8
- 2.e5#
- 1...Re6
- 2.Qc5#
- 2.Qd5#
- 1...Rf6
- 2.e5#
- 1...Rgh6
- 2.e5#
- 1...Rg7
- 2.e5#
- 1...Bf1
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 2.Qxf8#
- 2.e5#
- 1...Bg2
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 2.Qxf8#
- 2.e5#
- 1...Bg4
- 2.e5#
- 1...Sd2
- 2.e5#
- 1...Sa3
- 2.e5#
- 1...Sc3
- 2.e5#
- 1...Se6
- 2.Qd5#
- 2.Qe5#
- 1...Sd7
- 2.Qd5#
- 1...Sh7
- 2.e5#
- 1...g4
- 2.Qxf8#
- 2.e5#
- 1...Rxg8!
- threat
- 1.Kd8?
- Keys
- 1.Bh2!
- threat
- 2.fxg5#
- 1...Qxc6+
- 2.Rxc6#
- 1...Bxf5+
- 2.Sxf5#
- 1...gxf4
- 2.Bxf4#
- 1...Qb3
- 2.Sb5#
- 1...Qb5
- 2.Sxb5#
- 1...Qa3
- 2.Sb5#
- 1...Re6
- 2.Qc5#
- 1...Se6
- 2.Qe5#
- 1...Sd7
- 2.Qd5#
- 1...g4
- 2.Qxf8#
- threat
- 1.Bh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- Q(c);N_GUARD::S(E)
- Q(c);N_GUARD::S(E),XQ(c)
- Q(c);CHECK,OGATE,XP(H)::R1(A),XQ(c)
- R(i);N_PINQ(G)::QAB1(G)
- B(b);CHECK,XQ(G)::S(E),XB(b)
- S(j);N_PINQ(G)::QAB1(G)
- S(j);N_PINQ(G)::QAR1(G)
- P(f);N_PINQ(G)::QAB(G),XS(j)
- Tries
- Try
- K(I);N_SPINQ(G),P-FLIGHT
- Threat
- DUALS(4)
- Vars
- B(b);XQ(G)::S(E),XB(b)
- P(f);XP(F)::QAB(G),XS(j)
- R(i);::QAB1(G)
- S(j);::QAR1(G)
- P(f);::QAB(G),XS(j)
- Refutation
- S(j);CHECK
- Try
- B(K);N_SPINQ(G)
- Threat
- DUALS(4)
- Vars
- Q(c);CHECK,OGATE,XP(H)::R1(A),XQ(c)
- R(i);XB(K)::QAB1(G)
- B(b);P_PINB(K),XQ(G)::S(E),XB(b)
- S(j);XB(K)::QAB1(G)
- S(j);::QAR1(G)
- P(f);::QAB(G),XS(j)
- Refutation
- P(f);XP(F)
- Try
- R(A);
- Threat
- R1(A)
- Vars
- Q(c);CHECK,OGATE,XP(H)::R1(A),XQ(c)
- B(b);CHECK,XQ(G)::S(E),XB(b)
- Q(c);N_GUARD::S(E)
- Q(c);N_GUARD::S(E),XQ(c)
- Refutation
- S(a);
- Try
- R(J);CHECK,N_SPINQ(G)
- Vars
- R(i);XR(J)::QAB1(G)
- Refutation
- S(j);XR(J)
- Try
- R(J);CHECK
- Refutation
- K(h);S_FLIGHT
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,OGATE,XP(H)::R1(A),XQ(c)
- B(b);CHECK,XQ(G)::S(E),XB(b)
- Q(c);XP(D)::P(C)
- P(e);XP(D)::P(C)
- P(f);XP(F)::P(C)
- Q(c);P_PINP(H)::P(C)
- Q(c);N_GUARD::S(E),XQ(c)
- R(g);::P(C)
- R(i);::P(C)
- B(b);::P(C)
- S(a);::P(C)
- S(j);N_PINQ(G)::QAR1(G)
- S(j);::P(C)
- Refutation
- R(i);XB(K)
- Try
- Actual
- B(B);
- Threat
- B(B)+P(F),XP(f)
- Vars
- Q(c);CHECK,OGATE,XP(H)::R1(A),XQ(c)
- B(b);CHECK,XQ(G)::S(E),XB(b)
- P(f);OGATE,P_SPINP(f),XP(F)::B(B),XP(f)
- Q(c);N_GUARD::S(E)
- Q(c);N_GUARD::S(E),XQ(c)
- R(i);N_PINQ(G)::QAB1(G)
- S(j);N_PINQ(G)::QAB1(G)
- S(j);N_PINQ(G)::QAR1(G)
- P(f);N_PINQ(G)::QAB(G),XS(j)
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).