MESON Chess Problem Database
Problem Display
PID: 181307 (8/2R1p3/3bP2Q/1PqkPP1K/R3p3/1N1N4/4P2B/8 w - - 0 1)
Kopaev, Viacheslav Georgievich
Comm., Springaren, 1983-1985
#2
12 + 5
| 114 | Springaren | 1988 |
SOLUTION
- SOUND
- Sets
- 1...Qa3
- 2.Rd4#
- 1...Qd4
- 2.Rxd4#
- 1...Qc1
- 2.Rd4#
- 1...Qc2
- 2.Rd4#
- 1...Qxb5
- 2.Rd4#
- 1...Qc6
- 2.Rd4#
- 1...Qxc7
- 2.Rd4#
- 1...exd3
- 2.e4#
- 1...Qa3
- Tries
- 1.Sdxc5?
- threat
- 2.Rd4#
- 2.Qd2#
- 1...Bxc5
- 2.Rxc5#
- 1...e3
- 2.Rd4#
- 1...Bxe5!
- threat
- 1.Qc1?
- 1...Qxc1
- 2.Rd4#
- 1...Qxb5
- 2.Rd4#
- 1...Qxc7
- 2.Rd4#
- 1...Bxe5
- 2.Qxc5#
- 1...Bxc7
- 2.Qxc5#
- 1...exd3
- 2.Qh1#
- 2.e4#
- 1...Qg1
- 2.Qc4#
- 2.Qc6#
- 1...Qf2
- 2.Qc4#
- 2.Qc6#
- 1...Qa3
- 2.Rd4#
- 2.Qc4#
- 2.Qc6#
- 1...Qe3
- 2.Qc4#
- 2.Qc6#
- 1...Qb4
- 2.Qc6#
- 1...Qd4
- 2.Rxd4#
- 2.Qc6#
- 1...Qb6
- 2.Qc4#
- 1...Qa7
- 2.Qc4#
- 2.Qc6#
- 1...Qc2
- 2.Rd4#
- 1...Qc4
- 2.Qxc4#
- 1...Qc6
- 2.Rd4#
- 2.Qxc6#
- 1...e3
- 2.Qh1#
- 1...Qc3!
- 1...Qxc1
- 1.Qd2?
- threat
- 2.Sdxc5#
- 1...Qxb5
- 2.Sb4#
- 2.Rd4#
- 1...Qxc7
- 2.Sdc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sdc5#
- 2.Rd4#
- 1...Bxe5
- 2.Sf4#
- 1...exd3
- 2.e4#
- 1...Qg1
- 2.Sf2#
- 2.Sb4#
- 1...Qf2
- 2.Sxf2#
- 2.Sb4#
- 1...Qa3
- 2.Sdc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sdc5#
- 2.Rd4#
- 1...Qe3
- 2.Sb4#
- 1...Qb4
- 2.Sxb4#
- 1...Qd4
- 2.Rxd4#
- 1...Qb6
- 2.Sb4#
- 2.Sdc5#
- 1...Qa7
- 2.Sb4#
- 2.Sdc5#
- 1...Qc1
- 2.Sdxc1#
- 2.Sb4#
- 2.Rd4#
- 1...Qc2
- 2.Sb4#
- 2.Rd4#
- 1...Qc3
- 2.Sb4#
- 1...Qc4
- 2.Sb4#
- 1...Qc6
- 2.Sdc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sdc5#
- 2.Rd4#
- 1...e3!
- threat
- 1.Sdxc5?
- Keys
- 1.Qh8!
- threat
- 2.Sf4#
- 1...Bxe5
- 2.Qxe5#
- 1...exd3
- 2.e4#
- 1...Qf2
- 2.Qa8#
- 1...Qe3
- 2.Qa8#
- 1...Qc1
- 2.Rd4#
- threat
- 1.Qh8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- Q(b);N_GUARD::R1(E)
- Q(b);N_GUARD::R1(E),XQ(b)
- Q(b);N_GUARD,XP(F)::R1(E)
- Q(b);N_GUARD,XR(L)::R1(E)
- P(a);OGATE,XS(D)::P(A)
- Tries
- Try
- S(D);XQ(b)
- Threat
- DUALS(2)
- Vars
- B(d);OGATE,XS(D)::R1(L),XB(d)
- P(a);::R1(E)
- Refutation
- B(d);XP(G)
- Try
- Q(K);
- Vars
- Q(b);N_GUARD,XQ(K)::R1(E)
- Q(b);N_GUARD,XP(F)::R1(E)
- Q(b);N_GUARD,XR(L)::R1(E)
- B(d);N_GUARD,XP(G)::QAR1(K),XQ(b)
- B(d);N_GUARD,XR(L)::QAR1(K),XQ(b)
- Q(b);OGATE::QAB1(K)
- Q(b);N_GUARD::QAB1(K)
- Q(b);N_GUARD::R1(E)
- Q(b);N_GUARD::QAB1(K),XQ(b)
- P(a);OGATEB::QAB(K)
- Refutation
- Q(b);
- Try
- Q(K);
- Threat
- QAR(K)+S(D),XQ(b)
- Vars
- B(d);SBLOCK,XP(G)::QAR(K)+S(D),DCHECK
- P(a);OGATE,P_SPINP(a),XS(D)::P(A)
- Q(b);::QAR(K)+S(D),DCHECK
- Q(b);::QAR(K)+S(D),DCHECK,XQ(b)
- Q(b);N_GUARD::R1(E),XQ(b)
- Refutation
- P(a);
- Try
- Actual
- Q(K);
- Threat
- S(D)
- Vars
- B(d);OGATE,XP(G)::QAR1(K),XB(d)
- P(a);OGATE,XS(D)::P(A)
- Q(b);N_GUARD::QAB(K)
- Q(b);N_GUARD::R1(E)
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).