MESON Chess Problem Database
Problem Display
PID: 243080 (nb3rrn/8/4BQ2/2pN1PPp/4P1kp/q6p/3BP2P/5R1K w - - 0 1)
Amirov, Talip Khasanovich
Shakhmaty (Riga), 1977
#2
11 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Se3#
- 1...Qb2
- 2.Se3#
- 1...Qb4
- 2.Se3#
- 1...Qa1
- 2.Se3#
- 1...Qa2
- 2.Se3#
- 1...Qe3
- 2.Sxe3#
- 1...Qf3+
- 2.exf3#
- 1...Qa4
- 2.Se3#
- 1...Qa5
- 2.Se3#
- 1...Qa6
- 2.Se3#
- 1...Qa7
- 2.Se3#
- 1...Rxf6
- 2.Sxf6#
- 1...Rxg5
- 2.Qxg5#
- 1...Rg6
- 2.fxg6#
- 1...Bf4
- 2.Rxf4#
- 1...Ba7
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Sg6
- 2.fxg6#
- 1...Qc1
- Tries
- 1.Qc3?
- threat
- 2.f6#
- 1...Rxf5
- 2.Sf6#
- 2.Bxf5#
- 1...Rxg5
- 2.Se3#
- 1...Qa6
- 2.Qf3#
- 1...Rf6
- 2.Sxf6#
- 1...Re8
- 2.Sf6#
- 1...Sc7
- 2.Rg1#
- 1...Bf4!
- threat
- 1.Qe7?
- threat
- 2.f6#
- 1...Qf3+
- 2.exf3#
- 1...Rxf5
- 2.Sf6#
- 2.Bxf5#
- 1...Rxg5
- 2.Qxg5#
- 1...Qe3
- 2.Sxe3#
- 1...Qa6
- 2.Se3#
- 1...Rf6
- 2.Sxf6#
- 1...Bf4
- 2.Rxf4#
- 1...Sc7
- 2.Rf4#
- 1...Bxh2!
- threat
- 1.Qg7?
- threat
- 2.f6#
- 1...Qf3+
- 2.exf3#
- 1...Rxf5
- 2.Sf6#
- 2.Bxf5#
- 1...Qa6
- 2.Se3#
- 1...Rf6
- 2.Sxf6#
- 1...Re8
- 2.Sf6#
- 1...Sc7
- 2.Rf4#
- 1...Bxh2!
- threat
- 1.Qd8?
- threat
- 2.f6#
- 1...Qf3+
- 2.exf3#
- 1...Rxf5
- 2.Sf6#
- 2.Bxf5#
- 1...Rxg5
- 2.Qxg5#
- 1...Qe3
- 2.Sxe3#
- 1...Qa6
- 2.Se3#
- 1...Rf6
- 2.Sxf6#
- 1...Re8
- 2.Sf6#
- 1...Bf4
- 2.Rxf4#
- 1...Sc7
- 2.Rf4#
- 1...Bxh2!
- threat
- 1.Qg6?
- threat
- 2.f6#
- 1...Qf3+
- 2.exf3#
- 1...Rxf5
- 2.Sf6#
- 2.Bxf5#
- 2.Qxf5#
- 1...Qa6
- 2.Se3#
- 1...Rf6
- 2.Sxf6#
- 1...Re8
- 2.Sf6#
- 1...Sc7
- 2.Rf4#
- 1...Bxh2!
- threat
- 1.Qh6?
- threat
- 2.f6#
- 1...Qf3+
- 2.exf3#
- 1...Rxf5
- 2.Sf6#
- 2.Bxf5#
- 1...Rxg5
- 2.Qxg5#
- 1...Qa6
- 2.Se3#
- 1...Rf6
- 2.Sxf6#
- 1...Re8
- 2.Sf6#
- 1...Sc7
- 2.Rf4#
- 1...Bxh2!
- threat
- 1.g6?
- threat
- 2.Qg5#
- 1...Qf3+
- 2.exf3#
- 1...Rxf6
- 2.Sxf6#
- 1...Rxg6
- 2.fxg6#
- 1...Qe3
- 2.Sxe3#
- 1...Bf4
- 2.Rxf4#
- 1...Sf7!
- threat
- 1.Qc3?
- Keys
- 1.Qe5!
- threat
- 2.f6#
- 1...Qf3+
- 2.exf3#
- 1...Rxf5
- 2.Sf6#
- 2.Bxf5#
- 2.Qxf5#
- 1...Rxg5
- 2.Rf4#
- 1...Qa6
- 2.Rg1#
- 1...Rf6
- 2.Sxf6#
- 1...Re8
- 2.Sf6#
- 1...Sc7
- 2.Qf4#
- threat
- 1.Qe5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 13
- Sets
- Q(a);N_GUARD,P_PINR(A)::S(G)
- Q(a);N_GUARD::S(G)
- Q(a);N_GUARD::S(G),XQ(a)
- Q(a);CHECK,OGATE::P(D),XQ(a)
- R(i);XQ(K)::S(G),XR(i)
- R(j);OGATE,XP(I)::QAR1(K),XR(j)
- R(j);OGATE::B(J)+P(H),XR(j)
- B(h);N_GUARD::R1(A),XB(h)
- B(h);N_GUARD::R1(A)
- S(g);S_CUTB(h)::R1(A)
- S(k);OGATE::B(J)+P(H),XS(k)
- Tries
- Try
- Q(K);
- Threat
- B(J)+P(H)
- Vars
- R(j);SBLOCK,XP(I)::S(G)
- Q(a);N_GUARD::QAB1(K)
- R(i);N_GUARD::S(G),XR(i)
- R(i);N_GUARD::S(G)
- S(g);S_CUTB(h)::R(A)
- Refutation
- B(h);
- Try
- Q(K);
- Threat
- B(J)+P(H)
- Vars
- Q(a);CHECK,OGATE::P(D),XQ(a)
- R(j);OGATE,XP(I)::QAR1(K),XR(j)
- Q(a);N_GUARD::S(G),XQ(a)
- Q(a);N_GUARD::S(G)
- R(i);N_GUARD::S(G),XR(i)
- B(h);N_GUARD::R1(A),XB(h)
- S(g);S_CUTB(h)::R1(A)
- Refutation
- B(h);XP(E)
- Try
- Q(K);
- Threat
- B(J)+P(H)
- Vars
- Q(a);CHECK,OGATE::P(D),XQ(a)
- Q(a);N_GUARD::S(G)
- R(i);N_GUARD::S(G),XR(i)
- R(i);N_GUARD::S(G)
- S(g);S_CUTB(h)::R1(A)
- Refutation
- B(h);XP(E)
- Try
- Q(K);
- Threat
- B(J)+P(H)
- Vars
- Q(a);CHECK,OGATE::P(D),XQ(a)
- R(j);OGATE,XP(I)::QAR1(K),XR(j)
- Q(a);N_GUARD::S(G),XQ(a)
- Q(a);N_GUARD::S(G)
- R(i);N_GUARD::S(G),XR(i)
- R(i);N_GUARD::S(G)
- B(h);N_GUARD::R1(A),XB(h)
- S(g);S_CUTB(h)::R1(A)
- Refutation
- B(h);XP(E)
- Try
- Q(K);
- Threat
- B(J)+P(H)
- Vars
- Q(a);CHECK,OGATE::P(D),XQ(a)
- Q(a);N_GUARD::S(G)
- R(i);N_GUARD::S(G),XR(i)
- R(i);N_GUARD::S(G)
- S(g);S_CUTB(h)::R1(A)
- Refutation
- B(h);XP(E)
- Try
- Q(K);
- Threat
- B(J)+P(H)
- Vars
- Q(a);CHECK,OGATE::P(D),XQ(a)
- R(j);OGATE,XP(I)::QAR1(K),XR(j)
- Q(a);N_GUARD::S(G)
- R(i);N_GUARD::S(G),XR(i)
- R(i);N_GUARD::S(G)
- S(g);S_CUTB(h)::R1(A)
- Refutation
- B(h);XP(E)
- Try
- P(I);
- Threat
- QAR1(K)
- Vars
- Q(a);CHECK,OGATE::P(D),XQ(a)
- R(i);XQ(K)::S(G),XR(i)
- R(j);OGATE,XP(I)::B(J)+P(H),XR(j)
- Q(a);N_GUARD::S(G),XQ(a)
- B(h);N_GUARD::R1(A),XB(h)
- Refutation
- S(k);
- Try
- Actual
- Q(K);
- Threat
- B(J)+P(H)
- Vars
- Q(a);CHECK,OGATE::P(D),XQ(a)
- R(j);SBLOCK,XP(I)::R1(A)
- Q(a);N_GUARD::R(A)
- R(i);N_GUARD::S(G),XR(i)
- R(i);N_GUARD::S(G)
- S(g);S_CUTB(h)::QAR1(K)
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).