MESON Chess Problem Database
Problem Display
PID: 68834 (R6q/6r1/N2P4/8/BNp1P1QR/5p2/2K5/k7 w - - 0 1)
Gavriliv, Evgeni M
Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)
2nd Prize, Sachove umeni (Ceskoslovensky sach), 1979
#2
9 + 5
SOLUTION
- SOUND
- Sets
- 1...Qxa8
- 2.Rh1#
- 1...Qb8
- 2.Rh1#
- 1...Qc8
- 2.Rh1#
- 1...Qd8
- 2.Rh1#
- 1...Qe8
- 2.Rh1#
- 1...Qf8
- 2.Rh1#
- 1...Qg8
- 2.Rh1#
- 1...Ra7
- 2.Qg1#
- 1...Rb7
- 2.Qg1#
- 1...Rc7
- 2.Qg1#
- 1...Rd7
- 2.Qg1#
- 1...Re7
- 2.Qg1#
- 1...Rf7
- 2.Qg1#
- 1...Rh7
- 2.Qg1#
- 1...f2
- 2.Qd1#
- 1...Qxa8
- Tries
- 1.Sc7?
- threat
- 2.Be8#
- 1...Qxa8
- 2.Rh1#
- 1...Rxc7
- 2.Qg1#
- 1...Qh5
- 2.Bb5#
- 1...Qb8
- 2.Rh1#
- 1...Qc8
- 2.Rh1#
- 1...Qd8
- 2.Rh1#
- 1...Qe8
- 2.Bxe8#
- 2.Rh1#
- 1...Rd7
- 2.Qg1#
- 1...Rg5!
- threat
- 1.Sb8?
- threat
- 2.Bd7#
- 1...Qxb8
- 2.Rh1#
- 1...Qc8
- 2.Rh1#
- 1...Qd8
- 2.Rh1#
- 1...Rg5
- 2.Bb5#
- 1...Ra7
- 2.Qg1#
- 1...Rb7
- 2.Qg1#
- 1...Rc7
- 2.Qg1#
- 1...Rd7
- 2.Bxd7#
- 2.Qg1#
- 1...Qh5!
- threat
- 1.Bb5?
- 1...Qxh4
- 2.Sc7#
- 1...Qxa8
- 2.Rh1#
- 1...Rxg4
- 2.Sb8#
- 1...Qh5
- 2.Sc7#
- 1...Qh6
- 2.Sc7#
- 1...Qh7
- 2.Sc7#
- 1...Qb8
- 2.Rh1#
- 1...Qc8
- 2.Rh1#
- 1...Qd8
- 2.Rh1#
- 1...Qe8
- 2.Rh1#
- 1...Qf8
- 2.Rh1#
- 1...Qg8
- 2.Rh1#
- 1...Rg5
- 2.Sb8#
- 1...Rg6
- 2.Sb8#
- 1...Ra7
- 2.Qg1#
- 1...Rb7
- 2.Qg1#
- 1...Rc7
- 2.Qg1#
- 1...Rd7
- 2.Qg1#
- 1...Re7
- 2.Qg1#
- 1...Rf7
- 2.Qg1#
- 1...Rh7
- 2.Qg1#
- 1...Rg8
- 2.Sb8#
- 1...f2
- 2.Qd1#
- 1...c3!
- 1...Qxh4
- 1.Bd7?
- threat
- 2.Sb8#
- 1...Qxa8
- 2.Rh1#
- 1...Rxd7
- 2.Qg1#
- 1...Qh5
- 2.Sc5#
- 1...Qb8
- 2.Sxb8#
- 2.Rh1#
- 1...Qc8
- 2.Rh1#
- 1...Qd8
- 2.Rh1#
- 1...Rg5!
- threat
- 1.Be8?
- threat
- 2.Sc7#
- 1...Qxe8
- 2.Rh1#
- 1...Rg5
- 2.Sc5#
- 1...Ra7
- 2.Qg1#
- 1...Rb7
- 2.Qg1#
- 1...Rc7
- 2.Sxc7#
- 2.Qg1#
- 1...Qh5!
- threat
- 1.Rhxh8?
- threat
- 2.Rh1#
- 1...Rh7
- 2.Qg1#
- 1...f2
- 2.Qd1#
- 1...Rxg4!
- threat
- 1.Raxh8?
- threat
- 2.Rh1#
- 1...Rh7
- 2.Qg1#
- 1...f2
- 2.Qd1#
- 1...Rxg4!
- threat
- 1.Qxf3?
- threat
- 2.Qd1#
- 2.Qf1#
- 2.Qa3#
- 2.Qc3#
- 1...Qxh4
- 2.Qd1#
- 2.Qa3#
- 2.Qc3#
- 1...Qh5
- 2.Qa3#
- 2.Qc3#
- 1...Qh6
- 2.Qa3#
- 2.Qc3#
- 1...Qf8
- 2.Qd1#
- 2.Qa3#
- 2.Qc3#
- 1...Rg1
- 2.Qa3#
- 1...Rg3
- 2.Qd1#
- 2.Qf1#
- 1...Rg4
- 2.Qd1#
- 2.Qf1#
- 2.Qa3#
- 1...Rg5
- 2.Qd1#
- 2.Qf1#
- 2.Qa3#
- 1...Rg6
- 2.Qd1#
- 2.Qf1#
- 2.Qa3#
- 1...Ra7
- 2.Qd1#
- 2.Qh1#
- 2.Qf1#
- 2.Qa3#
- 1...Rb7
- 2.Qd1#
- 2.Qh1#
- 2.Qf1#
- 2.Qa3#
- 1...Rc7
- 2.Qd1#
- 2.Qh1#
- 2.Qf1#
- 2.Qa3#
- 1...Rd7
- 2.Qd1#
- 2.Qh1#
- 2.Qf1#
- 2.Qa3#
- 1...Re7
- 2.Qd1#
- 2.Qh1#
- 2.Qf1#
- 2.Qa3#
- 1...Rf7
- 2.Qd1#
- 2.Qa3#
- 1...Rh7
- 2.Qd1#
- 2.Qh1#
- 2.Qf1#
- 2.Qa3#
- 1...Rg8
- 2.Qd1#
- 2.Qf1#
- 2.Qa3#
- 1...c3
- 2.Qd1#
- 2.Qf1#
- 2.Qxc3#
- 1...Rg2+!
- threat
- 1.Qxg7+?
- 1...c3
- 2.Qg1#
- 1...Qxg7!
- 1...c3
- 1.Sc7?
- Keys
- 1.Sc5!
- 1...Qxh4
- 2.Bd7#
- 1...Qxa8
- 2.Rh1#
- 1...Rxg4
- 2.Be8#
- 1...Qh5
- 2.Bd7#
- 1...Qh6
- 2.Bd7#
- 1...Qh7
- 2.Bd7#
- 1...Qb8
- 2.Rh1#
- 1...Qc8
- 2.Rh1#
- 1...Qd8
- 2.Rh1#
- 1...Qe8
- 2.Rh1#
- 1...Qf8
- 2.Rh1#
- 1...Qg8
- 2.Rh1#
- 1...Rg5
- 2.Be8#
- 1...Rg6
- 2.Be8#
- 1...Ra7
- 2.Qg1#
- 1...Rb7
- 2.Qg1#
- 1...Rc7
- 2.Qg1#
- 1...Rd7
- 2.Qg1#
- 1...Re7
- 2.Qg1#
- 1...Rf7
- 2.Qg1#
- 1...Rh7
- 2.Qg1#
- 1...Rg8
- 2.Be8#
- 1...f2
- 2.Qd1#
- 1...c3
- 2.Sb3#
- 1...Qxh4
- 1.Sc5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- Q(e);N_GUARD,XR(I)::R(F)
- Q(e);N_GUARD::R(F)
- R(d);N_GUARD::QAR(E)
- P(b);OGATE::QAR(E)
- Tries
- Try
- S(G);
- Threat
- R(I)+B(B)
- Vars
- Q(e);N_GUARD,XR(I)::R(F)
- R(d);N_GUARD,XS(G)::QAR(E)
- Q(e);N_GUARD::R(I)+B(B)
- Q(e);N_GUARD::R(F)
- R(d);N_GUARD::QAR(E)
- Refutation
- R(d);
- Try
- S(G);
- Threat
- R(I)+B(B)
- Vars
- Q(e);N_GUARD,XS(G)::R(F)
- Q(e);N_GUARD::R(F)
- R(d);N_GUARD::R(I)+B(B)
- R(d);N_GUARD::QAR(E)
- Refutation
- Q(e);
- Try
- B(B);
- Vars
- Q(e);N_GUARD,XR(F)::R(I)+S(G)
- Q(e);N_GUARD,XR(I)::R(F)
- R(d);N_GUARD,XQ(E)::R(I)+S(G)
- Q(e);N_GUARD::R(I)+S(G)
- Q(e);N_GUARD,P_PINP(D)::R(I)+S(G)
- Q(e);N_GUARD::R(F)
- R(d);N_GUARD::R(I)+S(G)
- R(d);N_GUARD::QAR(E)
- P(b);OGATE::QAR(E)
- Refutation
- P(c);
- Try
- B(B);
- Threat
- R(I)+S(G)
- Vars
- Q(e);N_GUARD,XR(I)::R(F)
- R(d);N_GUARD,XB(B)::QAR(E)
- Q(e);N_GUARD::R(I)+S(G)
- Q(e);N_GUARD::R(F)
- Refutation
- R(d);
- Try
- B(B);
- Threat
- R(I)+S(G)
- Vars
- Q(e);N_GUARD,XB(B)::R(F)
- R(d);N_GUARD::R(I)+S(G)
- R(d);N_GUARD::QAR(E)
- Refutation
- Q(e);
- Try
- R(F);XQ(e)
- Threat
- R(F)
- Vars
- R(d);N_GUARD::QAR(E)
- P(b);OGATE::QAR(E)
- Refutation
- R(d);XQ(E)
- Try
- R(I);XQ(e)
- Threat
- R(F)
- Vars
- R(d);N_GUARD::QAR(E)
- P(b);OGATE::QAR(E)
- Refutation
- R(d);XQ(E)
- Try
- Q(E);XP(b)
- Threat
- DUALS(4)
- Vars
- R(d);::QAR2(E)
- Refutation
- R(d);CHECK
- Try
- Q(E);CHECK,XR(d)
- Vars
- P(c);P_SPINP(c)::QAR(E)
- Refutation
- Q(e);XQ(E)
- Try
- Actual
- S(G);
- Vars
- Q(e);N_GUARD,XR(F)::R(I)+B(B)
- Q(e);N_GUARD,XR(I)::R(F)
- R(d);N_GUARD,XQ(E)::R(I)+B(B)
- Q(e);N_GUARD::R(I)+B(B)
- Q(e);N_GUARD,P_PINP(D)::R(I)+B(B)
- Q(e);N_GUARD::R(F)
- R(d);N_GUARD::R(I)+B(B)
- R(d);N_GUARD::QAR(E)
- P(b);OGATE::QAR(E)
- P(c);N_GUARD::S(G)
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).