MESON Chess Problem Database
Problem Display
PID: 8155 (b7/1n1npNKp/3PkPp1/1BP1B1Q1/r3P2r/8/2P1N1PP/4R3 w - - 0 1)
Kopaev, Viacheslav Georgievich
The Problemist, 1995
#2
14 + 9
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sd4#
- 2.Bc4#
- 1...Ra2
- 2.Sd4#
- 2.Bc4#
- 1...Ra3
- 2.Sd4#
- 2.Bc4#
- 1...Rc4
- 2.Bxc4#
- 1...Rd4
- 2.Sxd4#
- 1...Ra5
- 2.Sd4#
- 2.Bc4#
- 1...Ra6
- 2.Sd4#
- 2.Bc4#
- 1...Ra7
- 2.Sd4#
- 2.Bc4#
- 1...Rxh2
- 2.Sf4#
- 2.Qg4#
- 1...Rh3
- 2.Sf4#
- 2.Qg4#
- 1...Rf4
- 2.Sxf4#
- 1...Rg4
- 2.Qxg4#
- 1...Rh5
- 2.Sf4#
- 1...Rh6
- 2.Sf4#
- 2.Qg4#
- 1...Sa5
- 2.Sd8#
- 1...Sbxc5
- 2.Sd8#
- 1...Sxd6
- 2.Sd8#
- 1...Sd8
- 2.Sxd8#
- 1...Sxe5
- 2.Qxe5#
- 1...Ra1
- Tries
- 1.Bxa4?
- threat
- 2.Sd4#
- 2.Bb3#
- 1...Sbxc5
- 2.Sd4#
- 2.Sd8#
- 1...Sxd6
- 2.Sd4#
- 2.Sd8#
- 1...Sdxc5
- 2.Sd4#
- 1...Sxe5
- 2.Sd4#
- 2.Qxe5#
- 1...Sxf6
- 2.Sd4#
- 1...exd6
- 2.Sd4#
- 1...Rh3
- 2.Sd4#
- 2.Sf4#
- 2.Qg4#
- 1...Sa5
- 2.Sd4#
- 2.Sd8#
- 1...Sd8
- 2.Sd4#
- 2.Sxd8#
- 1...Sb6
- 2.Sd4#
- 1...Sb8
- 2.Sd4#
- 1...Sf8
- 2.Sd4#
- 1...Rxe4!
- threat
- 1.Ba1?
- threat
- 2.Qd5#
- 1...Raxe4
- 2.Sd4#
- 1...Rhxe4
- 2.Sf4#
- 1...Sxd6
- 2.Sd8#
- 1...Sxf6
- 2.Qe5#
- 1...Rd4
- 2.Sxd4#
- 1...Rh5
- 2.Sf4#
- 1...Sa5
- 2.Sd8#
- 1...Sd8
- 2.Sxd8#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sbxc5!
- threat
- 1.Bb2?
- threat
- 2.Qd5#
- 1...Raxe4
- 2.Sd4#
- 1...Rhxe4
- 2.Sf4#
- 1...Sxd6
- 2.Sd8#
- 1...Sxf6
- 2.Qe5#
- 1...Rd4
- 2.Sxd4#
- 1...Rh5
- 2.Sf4#
- 1...Sa5
- 2.Sd8#
- 1...Sd8
- 2.Sxd8#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sbxc5!
- threat
- 1.Bc3?
- threat
- 2.Qd5#
- 1...Raxe4
- 2.Sd4#
- 1...Rhxe4
- 2.Sf4#
- 1...Sxd6
- 2.Sd8#
- 1...Sxf6
- 2.Qe5#
- 1...Rd4
- 2.Sxd4#
- 1...Rh5
- 2.Sf4#
- 1...Sa5
- 2.Sd8#
- 1...Sd8
- 2.Sxd8#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sbxc5!
- threat
- 1.Bd4?
- threat
- 2.Qd5#
- 1...Rxd4
- 2.Sxd4#
- 1...Rxe4
- 2.Sf4#
- 1...Sxd6
- 2.Sd8#
- 1...Sxf6
- 2.Qe5#
- 1...Rh5
- 2.Sf4#
- 1...Sa5
- 2.Sd8#
- 1...Sd8
- 2.Sxd8#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sbxc5!
- threat
- 1.Bf4?
- threat
- 2.Qd5#
- 1...Rxe4
- 2.Sd4#
- 1...Sbxc5
- 2.Sd8#
- 1...Sxd6
- 2.Sd8#
- 1...Sxf6
- 2.Qe5#
- 1...Rd4
- 2.Sxd4#
- 1...Sa5
- 2.Sd8#
- 1...Sd8
- 2.Sxd8#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Rh5!
- threat
- 1.Qxh4?
- threat
- 2.Sf4#
- 2.Qh3#
- 2.Qg4#
- 1...Sxd6
- 2.Sf4#
- 1...Sxe5
- 2.Sf4#
- 2.Sg5#
- 1...Sxf6
- 2.Sf4#
- 1...exf6
- 2.Sf4#
- 1...Ra3
- 2.Sd4#
- 2.Sf4#
- 2.Bc4#
- 2.Qg4#
- 1...g5
- 2.Qg4#
- 1...h5
- 2.Sf4#
- 2.Qh3#
- 1...Rxe4!
- threat
- 1.c4?
- threat
- 2.Sd4#
- 1...Rxc4
- 2.Bxc4#
- 1...Rxe4!
- threat
- 1.g4?
- threat
- 2.Sf4#
- 1...Rxg4
- 2.Qxg4#
- 1...Rxe4!
- threat
- 1.Bxa4?
- Keys
- 1.Bg3!
- threat
- 2.Qd5#
- 1...Raxe4
- 2.Sd4#
- 1...Rhxe4
- 2.Sf4#
- 1...Sbxc5
- 2.Sd8#
- 1...Sxd6
- 2.Sd8#
- 1...Sxf6
- 2.Qe5#
- 1...Rd4
- 2.Sxd4#
- 1...Rh5
- 2.Sf4#
- 1...Sa5
- 2.Sd8#
- 1...Sd8
- 2.Sxd8#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- threat
- 1.Bg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- R(a);N_GUARD::B(G),XR(a)
- R(a);N_GUARD::S(C),XR(a)
- R(b);N_GUARD::S(C),XR(b)
- R(b);N_GUARD::QAB(J),XR(b)
- R(b);N_GUARD::S(C)
- S(e);N_GUARD::S(M)
- S(e);N_GUARD,XP(H)::S(M)
- S(e);N_GUARD,XP(K)::S(M)
- S(e);N_GUARD::S(M),XS(e)
- S(f);OGATE,XB(I)::QAR1(J),XS(f)
- Tries
- Try
- B(G);XR(a)
- Threat
- DUALS(2)
- Vars
- S(f);XP(H)::S(C)
- S(f);XP(L)::S(C)
- P(g);XP(K)::S(C)
- S(f);::S(C)
- Refutation
- R(b);XP(F)
- Try
- B(I);
- Threat
- QAB1(J)
- Vars
- R(a);N_GUARD,XP(F)::S(C)
- R(b);N_GUARD,XP(F)::S(C)
- S(e);N_GUARD,XP(K)::S(M)
- S(f);N_GUARD,XP(L)::QAR1(J)
- R(a);N_GUARD::S(C),XR(a)
- R(b);N_GUARD::S(C)
- S(e);N_GUARD::S(M)
- S(e);N_GUARD::S(M),XS(e)
- S(f);N_GUARD::QAR1(J),XS(f)
- S(f);N_GUARD::QAR1(J)
- Refutation
- S(e);XP(H)
- Try
- B(I);
- Threat
- QAB1(J)
- Vars
- R(a);N_GUARD,XP(F)::S(C)
- R(b);N_GUARD,XP(F)::S(C)
- S(e);N_GUARD,XP(K)::S(M)
- S(f);N_GUARD,XP(L)::QAR1(J)
- R(a);N_GUARD::S(C),XR(a)
- R(b);N_GUARD::S(C)
- S(e);N_GUARD::S(M)
- S(e);N_GUARD::S(M),XS(e)
- S(f);N_GUARD::QAR1(J),XS(f)
- S(f);N_GUARD::QAR1(J)
- Refutation
- S(e);XP(H)
- Try
- B(I);
- Threat
- QAB1(J)
- Vars
- R(a);N_GUARD,XP(F)::S(C)
- R(b);N_GUARD,XP(F)::S(C)
- S(e);N_GUARD,XP(K)::S(M)
- S(f);N_GUARD,XP(L)::QAR1(J)
- R(a);N_GUARD::S(C),XR(a)
- R(b);N_GUARD::S(C)
- S(e);N_GUARD::S(M)
- S(e);N_GUARD::S(M),XS(e)
- S(f);N_GUARD::QAR1(J),XS(f)
- S(f);N_GUARD::QAR1(J)
- Refutation
- S(e);XP(H)
- Try
- B(I);
- Threat
- QAB1(J)
- Vars
- R(a);XB(I)::S(C),XR(a)
- R(b);N_GUARD,XP(F)::S(C)
- S(e);N_GUARD,XP(K)::S(M)
- S(f);N_GUARD,XP(L)::QAR1(J)
- R(b);N_GUARD::S(C)
- S(e);N_GUARD::S(M)
- S(e);N_GUARD::S(M),XS(e)
- S(f);N_GUARD::QAR1(J),XS(f)
- S(f);N_GUARD::QAR1(J)
- Refutation
- S(e);XP(H)
- Try
- B(I);
- Threat
- QAB1(J)
- Vars
- R(a);N_GUARD,XP(F)::S(C)
- S(e);N_GUARD,XP(H)::S(M)
- S(e);N_GUARD,XP(K)::S(M)
- S(f);N_GUARD,XP(L)::QAR1(J)
- R(a);N_GUARD::S(C),XR(a)
- S(e);N_GUARD::S(M)
- S(e);N_GUARD::S(M),XS(e)
- S(f);N_GUARD::QAR1(J),XS(f)
- S(f);N_GUARD::QAR1(J)
- Refutation
- R(b);
- Try
- Q(J);XR(b)
- Threat
- DUALS(3)
- Vars
- S(e);XP(K)::S(C)
- S(f);XP(L)::S(C)
- P(g);XP(L)::S(C)
- P(d);::QAB(J)
- Refutation
- R(a);XP(F)
- Try
- P(B);
- Threat
- S(C)
- Vars
- R(a);OGATE,XP(B)::B(G),XR(a)
- Refutation
- R(b);XP(F)
- Try
- P(D);
- Threat
- S(C)
- Vars
- R(b);OGATE,XP(D)::QAB(J),XR(b)
- Refutation
- R(a);XP(F)
- Try
- Actual
- B(I);
- Threat
- QAB1(J)
- Vars
- R(a);N_GUARD,XP(F)::S(C)
- R(b);N_GUARD,XP(F)::S(C)
- S(e);N_GUARD,XP(H)::S(M)
- S(e);N_GUARD,XP(K)::S(M)
- S(f);N_GUARD,XP(L)::QAR1(J)
- R(a);N_GUARD::S(C),XR(a)
- R(b);N_GUARD::S(C)
- S(e);N_GUARD::S(M)
- S(e);N_GUARD::S(M),XS(e)
- S(f);N_GUARD::QAR1(J),XS(f)
- S(f);N_GUARD::QAR1(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).