MESON Chess Problem Database
Problem Display
PID: 70647 (n5b1/pK1N4/7R/1Nbk3r/r2p1B2/4p3/2Q1Bp2/2R4q w - - 0 1)
Kopaev, Viacheslav Georgievich
3rd Prize, Vecherni Leningrad, 1978
#2
8 + 11
SOLUTION
- SOUND
- Sets
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Qxc5#
- 1...Qxc1
- 2.Bf3#
- 1...Qe1
- 2.Bf3#
- 1...Qf1
- 2.Bf3#
- 1...Qg1
- 2.Bf3#
- 1...Qh2
- 2.Bf3#
- 1...Qh4
- 2.Bf3#
- 1...Ra1
- 2.Bc4#
- 1...Ra2
- 2.Bc4#
- 1...Ra3
- 2.Bc4#
- 1...Rc4
- 2.Bxc4#
- 1...Ra5
- 2.Bc4#
- 1...Ra6
- 2.Bc4#
- 1...Rh2
- 2.Qf5#
- 1...Rh3
- 2.Qf5#
- 1...Rh4
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 1...Rxh6
- 2.Qf5#
- 1...Ba3
- 2.Qc6#
- 1...Bb4
- 2.Bc4#
- 2.Qc6#
- 1...Bb6
- 2.Rd6#
- 2.Qc6#
- 1...Bd6
- 2.Rxd6#
- 2.Qc6#
- 1...Be7
- 2.Qc6#
- 1...Bf8
- 2.Qc6#
- 1...Be6
- 2.Sf6#
- 1...Sb6
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Qf3
- Tries
- 1.Sd6?
- threat
- 2.Qxc5#
- 1...Qxc1
- 2.Bf3#
- 2.Qe4#
- 1...Rxh6
- 2.Qf5#
- 1...Bxd6
- 2.Rxd6#
- 2.Qc6#
- 1...Rc4
- 2.Bxc4#
- 2.Qxc4#
- 1...Ra5
- 2.Bc4#
- 2.Qb3#
- 2.Qc4#
- 1...Ba3
- 2.Qc6#
- 1...Bb4
- 2.Bc4#
- 2.Qb3#
- 2.Qc4#
- 2.Qc6#
- 1...Bb6
- 2.Qc6#
- 1...Rb4+!
- threat
- 1.Sxc5?
- threat
- 2.Rd6#
- 1...Rxh6
- 2.Qf5#
- 1...Rc4
- 2.Qxc4#
- 1...Ra6
- 2.Qb3#
- 2.Qc4#
- 1...Be6!
- threat
- 1.Sb6+?
- 1...Bxb6
- 2.Rd6#
- 2.Qc6#
- 1...Sxb6
- 2.Sc7#
- 1...axb6!
- 1...Bxb6
- 1.Bd3?
- threat
- 2.Qxc5#
- 1...Qxc1
- 2.Be4#
- 1...Rc4
- 2.Bxc4#
- 2.Qxc4#
- 1...Ba3
- 2.Qc6#
- 1...Bb4
- 2.Bc4#
- 2.Qb3#
- 2.Qc4#
- 2.Qc6#
- 1...Bb6
- 2.Rd6#
- 2.Qc6#
- 1...Bd6
- 2.Rxd6#
- 2.Qc6#
- 1...Be7
- 2.Qc6#
- 1...Bf8
- 2.Qc6#
- 1...Rxh6!
- threat
- 1.Bg4?
- threat
- 2.Sf6#
- 1...Rxh6
- 2.Qf5#
- 1...Qh4
- 2.Bf3#
- 1...Rf5
- 2.Qxf5#
- 1...Be7
- 2.Qc6#
- 1...Ra6!
- threat
- 1.Rb6?
- threat
- 2.Sf6#
- 1...Bxb6
- 2.Qc6#
- 1...Sxb6
- 2.Sc7#
- 1...Bd6
- 2.Rxd6#
- 1...Qh4
- 2.Bf3#
- 1...Rf5
- 2.Qxf5#
- 1...Rh6
- 2.Qf5#
- 1...Rh7
- 2.Qf5#
- 1...Be7
- 2.Qc6#
- 1...axb6!
- threat
- 1.Rc6?
- threat
- 2.Sf6#
- 1...Bd6
- 2.Rxd6#
- 1...Qh4
- 2.Bf3#
- 1...Rf5
- 2.Qxf5#
- 1...Rh6
- 2.Qf5#
- 1...Rh7
- 2.Qf5#
- 1...Be7!
- threat
- 1.Qd3?
- threat
- 2.Sc3#
- 2.Rxc5#
- 1...Qxc1
- 2.Bf3#
- 1...Rxh6
- 2.Qf5#
- 1...Qe1
- 2.Bf3#
- 2.Rxc5#
- 1...Ra3
- 2.Rxc5#
- 1...Rb4
- 2.Rxc5#
- 1...Ba3
- 2.Sc3#
- 1...Bb4
- 2.Qxd4#
- 1...Bb6
- 2.Sc3#
- 2.Rd6#
- 1...Bd6
- 2.Sc3#
- 2.Rxd6#
- 1...Be7
- 2.Sc3#
- 1...Bf8
- 2.Sc3#
- 1...Rc4!
- threat
- 1.Qe4+?
- 1...Qxe4
- 2.Rxc5#
- 1...Kxe4!
- 1...Qxe4
- 1.Qg6?
- threat
- 2.Rxc5#
- 2.Qc6#
- 1...Qxc1
- 2.Rxh5#
- 2.Qg2#
- 2.Qc6#
- 1...Rxh6
- 2.Rxc5#
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 2.Qc6#
- 1...Rc4
- 2.Bxc4#
- 2.Qc6#
- 1...Ra6
- 2.Bc4#
- 2.Rxc5#
- 1...Ba3
- 2.Qc6#
- 1...Bb4
- 2.Bc4#
- 2.Qc6#
- 1...Bb6
- 2.Qc6#
- 1...Be7
- 2.Qc6#
- 1...Bf8
- 2.Qc6#
- 1...Be6
- 2.Sf6#
- 2.Rxc5#
- 2.Qxe6#
- 1...Bd6!
- threat
- 1.Sd6?
- Keys
- 1.Ra6!
- threat
- 2.Sf6#
- 1...Rxa6
- 2.Bc4#
- 1...Bb6
- 2.Qc6#
- 1...Bd6
- 2.Rxd6#
- 1...Sb6
- 2.Sc7#
- 1...Qh4
- 2.Bf3#
- 1...Rf5
- 2.Qxf5#
- 1...Rh6
- 2.Qf5#
- 1...Rh7
- 2.Qf5#
- 1...Be7
- 2.Qc6#
- threat
- 1.Ra6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 19
- Sets
- Q(a);N_GUARD::B(C),XQ(a)
- Q(a);SBLOCK::QAR1(B),XB(f)
- Q(a);N_GUARD,XR(A)::B(C)
- Q(a);N_GUARD::B(C)
- R(d);N_GUARD::B(C)
- R(d);N_GUARD::B(C),XR(d)
- R(h);N_GUARD::QAR2(B)
- R(h);N_GUARD::QAR2(B),XR(h)
- R(h);N_GUARD,XR(F)::QAR2(B)
- B(f);OGATE::QAB1(B)
- B(k);SBLOCK::S(H)
- S(j);N_GUARD::S(E)
- S(j);N_GUARD::S(E),XS(j)
- Tries
- Try
- S(E);
- Threat
- QAR1(B),XB(f)
- Vars
- R(h);N_GUARD,XR(F)::QAR2(B)
- B(f);OGATE::QAB1(B)
- Refutation
- R(d);CHECK
- Try
- S(H);XB(f)
- Threat
- R1(F)
- Vars
- R(h);N_GUARD,XR(F)::QAR2(B)
- R(d);N_GUARD::QAB1(B),XR(d)
- Refutation
- B(k);
- Try
- S(H);CHECK
- Vars
- S(j);XS(H)::S(E)
- Refutation
- P(i);XS(H)
- Try
- B(C);
- Threat
- QAR1(B),XB(f)
- Vars
- Q(a);N_GUARD,XR(A)::B(C)
- B(f);OGATE::QAB1(B)
- Refutation
- R(h);XR(F)
- Try
- B(C);
- Threat
- S(H)
- Vars
- R(h);N_GUARD,XR(F)::QAR2(B)
- Q(a);N_GUARD::B(C)
- R(h);N_GUARD::QAR2(B),XR(h)
- B(f);OGATE::QAB1(B)
- Refutation
- R(d);
- Try
- R(F);
- Threat
- S(H)
- Vars
- B(f);OGATE,XR(F)::QAB1(B)
- S(j);N_GUARD,XR(F)::S(E)
- B(f);N_GUARD::R1(F),XB(f)
- Q(a);N_GUARD::B(C)
- R(h);N_GUARD::QAR2(B),XR(h)
- R(h);N_GUARD::QAR2(B)
- R(h);N_GUARD,P_PINS(H)::QAR2(B)
- B(f);OGATE::QAB1(B)
- Refutation
- P(i);XR(F)
- Try
- R(F);
- Threat
- S(H)
- Vars
- B(f);N_GUARD::R1(F),XB(f)
- Q(a);N_GUARD::B(C)
- R(h);N_GUARD::QAR2(B),XR(h)
- R(h);N_GUARD::QAR2(B)
- R(h);N_GUARD,P_PINS(H)::QAR2(B)
- Refutation
- B(f);
- Try
- Q(B);P_PINP(e)
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XR(A)::B(C)
- R(h);N_GUARD,XR(F)::QAR2(B)
- R(d);::R1(A),XB(f)
- R(d);P_PINS(E)::R1(A),XB(f)
- B(f);::S(E)
- B(f);N_GUARD,S_CUTR(d)::QAR1(B),XP(e)
- Refutation
- R(d);
- Try
- Q(B);CHECK
- Vars
- Q(a);SBLOCK,XQ(B)::R1(A),XB(f)
- Refutation
- K(g);S_FLIGHT,XQ(B)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(f);::QAB1(B)
- Refutation
- B(f);
- Try
- Actual
- R(F);
- Threat
- S(H)
- Vars
- R(d);N_GUARD,XR(F)::B(C)
- B(f);OGATE::QAB1(B)
- B(f);N_GUARD::R1(F),XB(f)
- S(j);N_GUARD::S(E)
- Q(a);N_GUARD::B(C)
- R(h);N_GUARD::QAR2(B),XR(h)
- R(h);N_GUARD::QAR2(B)
- R(h);N_GUARD,P_PINS(H)::QAR2(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).