MESON Chess Problem Database
Problem Display
PID: 179713 (1b1Q2n1/n2P1p2/p1NpN3/1r1k1r1p/7K/2RBR1pb/2P2PpP/7q w - - 0 1)
Kopnin, Aleksey Grigorevich
2nd Prize, Bryanski Rabochi, 1972
#2
11 + 14
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rb4+
- 2.Sxb4#
- 1...Ra5
- 2.Sb4#
- 1...Rc5
- 2.Sb4#
- 1...Rf4+
- 2.Sxf4#
- 1...Re5
- 2.Sf4#
- 1...Rg5
- 2.Sf4#
- 1...Bc7
- 2.Sxc7#
- 1...Sxc6
- 2.Bc4#
- 1...Sf6
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...fxe6
- 2.Be4#
- 1...Rb4+
- Tries
- 1.Bxb5?
- threat
- 2.Sb4#
- 2.Rcd3#
- 1...Rf4+
- 2.Sxf4#
- 1...Sxb5
- 2.Sb4#
- 1...Sxc6
- 2.Bc4#
- 2.Bxc6#
- 1...axb5
- 2.Sb4#
- 1...Re5
- 2.Sf4#
- 1...Qa1
- 2.Sb4#
- 1...Qb1
- 2.Rcd3#
- 1...Qd1
- 2.Sb4#
- 1...Qf1
- 2.Sb4#
- 1...a5
- 2.Rcd3#
- 1...fxe6!
- threat
- 1.Bxf5?
- threat
- 2.Sf4#
- 2.Red3#
- 1...Rb4+
- 2.Sxb4#
- 1...Bxf5
- 2.Sf4#
- 1...fxe6
- 2.Be4#
- 2.Red3#
- 1...Rc5
- 2.Sb4#
- 1...Qd1
- 2.Sf4#
- 1...Qf1
- 2.Sf4#
- 1...Sxc6!
- threat
- 1.Rc5+?
- 1...Rxc5
- 2.Sb4#
- 1...dxc5!
- 1...Rxc5
- 1.Re5+?
- 1...Rxe5
- 2.Sf4#
- 1...dxe5!
- 1...Rxe5
- 1.Qa5?
- threat
- 2.Sb4#
- 1...Rf4+
- 2.Sxf4#
- 1...Sxc6
- 2.Bc4#
- 1...fxe6
- 2.Be4#
- 1...Re5
- 2.Sf4#
- 1...Qb1!
- threat
- 1.Qb6?
- threat
- 2.Bc4#
- 2.Qd4#
- 1...Rb4+
- 2.Sxb4#
- 1...Rf4+
- 2.Sxf4#
- 1...Sxc6
- 2.Bc4#
- 2.Qxc6#
- 1...Re5
- 2.Sf4#
- 2.Bc4#
- 1...Qf1
- 2.Qd4#
- 1...Rc5
- 2.Sb4#
- 1...Rxb6!
- threat
- 1.Qf6?
- threat
- 2.Be4#
- 2.Qd4#
- 1...Rb4+
- 2.Sxb4#
- 1...Rf4+
- 2.Sxf4#
- 1...Sxc6
- 2.Bc4#
- 2.Be4#
- 1...Sxf6
- 2.Se7#
- 1...Rc5
- 2.Sb4#
- 2.Be4#
- 1...g1Q
- 2.Qd4#
- 1...g1S
- 2.Qd4#
- 1...g1B
- 2.Qd4#
- 1...g1R
- 2.Qd4#
- 1...Re5
- 2.Sf4#
- 1...Rxf6!
- threat
- 1.Qc7?
- threat
- 2.Bc4#
- 1...Rb4+
- 2.Sxb4#
- 1...Rf4+
- 2.Sxf4#
- 1...Bxc7
- 2.Sxc7#
- 1...fxe6
- 2.Be4#
- 1...Rc5
- 2.Sb4#
- 1...Qf1!
- threat
- 1.Qxb8?
- threat
- 2.Sc7#
- 1...Rb4+
- 2.Sxb4#
- 1...Rf4+
- 2.Sxf4#
- 1...Sxc6
- 2.Bc4#
- 1...fxe6
- 2.Be4#
- 1...Rc5
- 2.Sb4#
- 1...Rb7!
- threat
- 1.Qxg8?
- threat
- 2.Se7#
- 1...Rb4+
- 2.Sxb4#
- 1...Rf4+
- 2.Sxf4#
- 1...Sxc6
- 2.Bc4#
- 1...fxe6
- 2.Be4#
- 2.Qxe6#
- 1...Re5
- 2.Sf4#
- 1...Sc8!
- threat
- 1.Bxb5?
- Keys
- 1.Qg5!
- threat
- 2.Sf4#
- 1...Rb4+
- 2.Sxb4#
- 1...Sxc6
- 2.Bc4#
- 1...fxe6
- 2.Be4#
- 1...Rc5
- 2.Sb4#
- threat
- 1.Qg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 8
- Sets
- R(e);CHECK,N_GUARD::S(H),XR(e)
- R(e);N_GUARD::S(H)
- R(g);CHECK,N_GUARD::S(I),XR(g)
- R(g);N_GUARD::S(I)
- B(m);N_GUARD::S(I),XB(m)
- S(k);SBLOCK,XS(H)::B(E)
- S(n);N_GUARD::S(H)
- S(n);N_GUARD::S(H),XS(n)
- P(l);SBLOCK,XS(I)::B(E)
- Tries
- Try
- B(E);XR(e)
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,N_GUARD::S(I),XR(g)
- S(k);XB(E)::S(H)
- P(i);XB(E)::S(H)
- R(g);N_GUARD::S(I)
- Q(a);::S(H)
- Q(a);::R(D)
- P(i);::R(D)
- Refutation
- P(l);XS(I)
- Try
- B(E);XR(g)
- Threat
- DUALS(2)
- Vars
- R(e);CHECK,N_GUARD::S(H),XR(e)
- B(d);P_PINP(C),XB(E)::S(I)
- R(e);N_GUARD::S(H)
- Q(a);::S(I)
- Refutation
- S(k);XS(H)
- Try
- R(D);CHECK
- Vars
- R(e);XR(D)::S(H)
- Refutation
- P(j);XR(D)
- Try
- R(F);CHECK
- Vars
- R(g);XR(F)::S(I)
- Refutation
- P(j);XR(F)
- Try
- Q(K);P_PINR(e)
- Threat
- S(H)
- Vars
- R(g);CHECK,N_GUARD::S(I),XR(g)
- S(k);SBLOCK,XS(H)::B(E)
- P(l);SBLOCK,XS(I)::B(E)
- R(g);N_GUARD::S(I)
- Refutation
- Q(a);
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- R(e);CHECK,N_GUARD::S(H),XR(e)
- R(g);CHECK,N_GUARD::S(I),XR(g)
- Q(a);::QAR1(K)
- R(e);N_GUARD::S(H)
- Refutation
- R(e);XQ(K)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- R(e);CHECK,N_GUARD::S(H),XR(e)
- R(g);CHECK,N_GUARD::S(I),XR(g)
- S(n);N_GUARD,XQ(K)::S(H)
- P(b);::QAR1(K)
- R(g);N_GUARD::S(I)
- Refutation
- R(g);XQ(K)
- Try
- Q(K);
- Threat
- B(E)
- Vars
- R(e);CHECK,N_GUARD::S(H),XR(e)
- R(g);CHECK,N_GUARD::S(I),XR(g)
- B(m);XQ(K)::S(I),XB(m)
- P(l);SBLOCK,XS(I)::B(E)
- R(e);N_GUARD::S(H)
- Refutation
- Q(a);
- Try
- Q(K);XB(m)
- Threat
- S(I)
- Vars
- R(e);CHECK,N_GUARD::S(H),XR(e)
- R(g);CHECK,N_GUARD::S(I),XR(g)
- S(k);SBLOCK,XS(H)::B(E)
- P(l);SBLOCK,XS(I)::B(E)
- R(e);N_GUARD::S(H)
- Refutation
- R(e);
- Try
- Q(K);XS(n)
- Threat
- S(H)
- Vars
- R(e);CHECK,N_GUARD::S(H),XR(e)
- R(g);CHECK,N_GUARD::S(I),XR(g)
- S(k);SBLOCK,XS(H)::B(E)
- R(g);N_GUARD::S(I)
- Refutation
- S(k);
- Try
- Actual
- Q(K);P_PINR(g)
- Threat
- S(I)
- Vars
- R(e);CHECK,N_GUARD::S(H),XR(e)
- S(k);SBLOCK,XS(H)::B(E)
- P(l);SBLOCK,XS(I)::B(E)
- R(e);N_GUARD::S(H)
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).