MESON Chess Problem Database
Problem Display
PID: 70650 (3r4/8/1n6/B2pR1n1/qr5p/1p3b2/1PPkN2K/1R1BN1Q1 w - - 0 1)
Kopaev, Viacheslav Georgievich
1st Place, Moscow Championship, 1990
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qd7
- 2.Bxb4#
- 1...Qe8
- 2.Bxb4#
- 1...Qa1
- 2.Bxb4#
- 1...Qa2
- 2.Bxb4#
- 1...Bxe2
- 2.Rxe2#
- 1...Sh3
- 2.Sxf3#
- 1...Se4
- 2.Sxf3#
- 1...Se6
- 2.Sxf3#
- 1...Sf7
- 2.Sxf3#
- 1...Sh7
- 2.Sxf3#
- 1...Qd7
- Tries
- 1.Sg2?
- threat
- 2.Qe3#
- 2.Qd4#
- 2.Qe1#
- 1...Qxa5
- 2.Qe3#
- 2.Qe1#
- 1...Bxe2
- 2.Rxe2#
- 2.Qe3#
- 2.Qe1#
- 1...bxc2
- 2.Qe3#
- 2.Qd4#
- 1...Qb5
- 2.Qe3#
- 2.Qe1#
- 1...Be4
- 2.Qe3#
- 2.Qe1#
- 1...Se6
- 2.Qe3#
- 2.Qe1#
- 1...Sc4
- 2.Qd4#
- 2.Qe1#
- 1...d4
- 2.Qe1#
- 1...Bxg2!
- threat
- 1.Sd3?
- threat
- 2.Qe3#
- 2.Qe1#
- 2.Qxg5#
- 1...Qxa5
- 2.Qe3#
- 2.Qe1#
- 1...bxc2
- 2.Qe3#
- 1...Rf8
- 2.Qe3#
- 2.Qe1#
- 1...Rg8
- 2.Qe3#
- 2.Qe1#
- 1...Bg2
- 2.Qe3#
- 2.Qe1#
- 1...Be4
- 2.Qxg5#
- 1...Bg4
- 2.Qe3#
- 2.Qe1#
- 1...Sh3
- 2.Qe3#
- 2.Qe1#
- 1...Se6
- 2.Qe3#
- 2.Qe1#
- 1...Sf7
- 2.Qe3#
- 2.Qe1#
- 1...Sh7
- 2.Qe3#
- 2.Qe1#
- 1...Sc4
- 2.Qe1#
- 1...d4
- 2.Qe1#
- 2.Qxg5#
- 1...Se4!
- threat
- 1.Sg3?
- threat
- 2.Sf1#
- 2.Qe3#
- 2.Qd4#
- 1...Qxa5
- 2.Sf1#
- 2.Qe3#
- 1...Qb5
- 2.Qe3#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 2.Qf2#
- 2.Qe3#
- 2.Qd4#
- 2.Qxg2#
- 1...Be4
- 2.Qf2#
- 1...Se4
- 2.Sxf3#
- 1...Se6
- 2.Sxf3#
- 2.Sf1#
- 2.Qe3#
- 1...Sc4
- 2.Sf1#
- 2.Qd4#
- 1...d4
- 2.Sf1#
- 1...hxg3+!
- threat
- 1.Sd4?
- threat
- 2.Qe3#
- 2.Qxg5#
- 1...Rf8
- 2.Qe3#
- 1...Rg8
- 2.Qe3#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 2.Qf2#
- 2.Qe3#
- 2.Qxg2#
- 1...Be4
- 2.Qf2#
- 1...Bg4
- 2.Qe3#
- 1...Sh3
- 2.Sexf3#
- 2.Sdxf3#
- 2.Qe3#
- 1...Se4
- 2.Sexf3#
- 2.Sdxf3#
- 1...Se6
- 2.Sexf3#
- 2.Sdxf3#
- 2.Qe3#
- 1...Sf7
- 2.Sexf3#
- 2.Sdxf3#
- 2.Qe3#
- 1...Sh7
- 2.Sexf3#
- 2.Sdxf3#
- 2.Qe3#
- 1...Sc4!
- threat
- 1.Sf4?
- threat
- 2.Qe3#
- 2.Qd4#
- 1...Qxa5
- 2.Qe3#
- 1...Qb5
- 2.Qe3#
- 1...Be2
- 2.Rxe2#
- 1...Be4
- 2.Qf2#
- 1...Se4
- 2.Sxf3#
- 1...Se6
- 2.Sxf3#
- 2.Qe3#
- 1...Sc4
- 2.Qd4#
- 1...d4!
- threat
- 1.Sg2?
- Keys
- 1.Sc3!
- threat
- 2.Qe3#
- 1...Re4
- 2.Sxe4#
- 1...Be2
- 2.Rxe2#
- 1...Be4
- 2.Qf2#
- 1...Se4
- 2.Sxf3#
- 1...Sc4
- 2.Qd4#
- 1...d4
- 2.Qxg5#
- threat
- 1.Sc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- Q(d);N_GUARD::B(I),XR(e)
- B(c);OGATE,XS(G)::R1(J),XB(c)
- S(h);N_GUARD::S(C),XB(c)
- Tries
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- P(g);::QAB1(D)
- Refutation
- B(c);XS(C)
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- P(b);XP(F)::QAB1(D)
- B(c);::QAB(D),XS(h)
- S(i);::QAB1(D)
- Refutation
- S(h);
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- Q(d);::QAB1(D)
- B(c);N_GUARD::R1(J),XB(c)
- B(c);N_GUARD::QAR2(D)
- S(h);N_GUARD::S(C),XB(c)
- P(g);::S(G)
- Refutation
- P(f);CHECK,XS(G)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(j);::QAB1(D)
- B(c);N_GUARD::R1(J),XB(c)
- B(c);N_GUARD::QAR2(D)
- B(c);::QAB1(D)
- Refutation
- S(i);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(d);N_SPINR(e),XB(I)::QAB1(D)
- Q(d);::QAB1(D)
- B(c);N_GUARD::R1(J),XB(c)
- B(c);N_GUARD::QAR2(D)
- S(h);N_GUARD::S(C),XB(c)
- S(i);::QAR2(D)
- Refutation
- P(g);
- Try
- Actual
- S(G);N_PINR(e)
- Threat
- QAB1(D)
- Vars
- R(e);::B(I)+S(G),DCHECK,XR(e)
- B(c);N_GUARD::R1(J),XB(c)
- B(c);N_GUARD::QAR2(D)
- S(h);N_GUARD::S(C),XB(c)
- S(i);S_CUTR(e)::QAR2(D)
- P(g);S_CUTR(e)::QAB(D),XS(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).