MESON Chess Problem Database
Problem Display
PID: 159021 (r7/3RN3/1B6/p1N5/B1k1p1qR/3p1bp1/2pQ4/2K5 w - - 0 1)
Alaikov, Venelin
Ignatiev, Ivan N
1st HM., Rjazansky komsomolets, 1980-1981
#2
8 + 9
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Tries
- 1.Sxd3?
- threat
- 2.Sb2#
- 2.Se5#
- 2.Rd4#
- 2.Rc7#
- 2.Qxc2#
- 1...Qxd7
- 2.Sb2#
- 2.Se5#
- 2.Qxc2#
- 1...Qf5
- 2.Sb2#
- 2.Rd4#
- 2.Qxc2#
- 1...Qh5
- 2.Sb2#
- 2.Rd4#
- 2.Qxc2#
- 1...Qe6
- 2.Sb2#
- 2.Rd4#
- 2.Qxc2#
- 1...Qf4
- 2.Sb2#
- 2.Rd4#
- 1...Qg5
- 2.Sb2#
- 2.Rd4#
- 1...Qg6
- 2.Sb2#
- 2.Se5#
- 2.Rd4#
- 2.Qxc2#
- 1...Qg7
- 2.Rc7#
- 1...Ra7
- 2.Sb2#
- 2.Se5#
- 2.Rd4#
- 2.Qxc2#
- 1...Rc8
- 2.Sb2#
- 2.Se5#
- 2.Rd4#
- 2.Qxc2#
- 1...Rd8
- 2.Sb2#
- 2.Se5#
- 2.Rc7#
- 2.Qxc2#
- 1...Bd1
- 2.Sb2#
- 2.Se5#
- 2.Rd4#
- 2.Rc7#
- 1...e3
- 2.Sb2#
- 2.Se5#
- 2.Qxc2#
- 1...exd3!
- threat
- 1.Sa6?
- threat
- 2.Rd4#
- 2.Rc7#
- 1...Qf5
- 2.Rd4#
- 2.Qxd3#
- 1...Qh5
- 2.Rd4#
- 2.Qxd3#
- 1...Qe6
- 2.Rd4#
- 2.Qxd3#
- 1...Qf4
- 2.Rd4#
- 1...Qg5
- 2.Rd4#
- 1...Qg6
- 2.Rd4#
- 2.Qxd3#
- 1...Qg7
- 2.Rc7#
- 2.Qxd3#
- 1...Ra7
- 2.Rd4#
- 1...Rc8
- 2.Rd4#
- 1...Rd8
- 2.Rc7#
- 1...e3
- 2.Qxd3#
- 1...Qxd7!
- threat
- 1.Se6?
- threat
- 2.Rd4#
- 2.Rc7#
- 1...Qxe6
- 2.Rd4#
- 1...Qf5
- 2.Rd4#
- 1...Qh5
- 2.Rd4#
- 1...Qf4
- 2.Rd4#
- 1...Qg5
- 2.Rd4#
- 1...Qg7
- 2.Rc7#
- 1...Ra7
- 2.Rd4#
- 1...Rc8
- 2.Rd4#
- 1...Rd8
- 2.Rc7#
- 1...e3!
- threat
- 1.Sb7?
- threat
- 2.Sd6#
- 2.Rd4#
- 2.Rc7#
- 1...e3
- 2.Sd6#
- 1...Qf5
- 2.Sd6#
- 2.Rd4#
- 1...Qh5
- 2.Sd6#
- 2.Rd4#
- 1...Qe6
- 2.Rd4#
- 1...Qf4
- 2.Rd4#
- 1...Qg5
- 2.Sd6#
- 2.Rd4#
- 1...Qg6
- 2.Rd4#
- 1...Qg7
- 2.Sd6#
- 2.Rc7#
- 1...Rc8
- 2.Sxa5#
- 2.Sd6#
- 2.Rd4#
- 1...Rd8
- 2.Sxa5#
- 2.Sd6#
- 2.Rc7#
- 1...Qxd7!
- threat
- 1.Sf5?
- threat
- 2.Se3#
- 2.Rd4#
- 1...e3
- 2.Sxe3#
- 1...Qf4
- 2.Rd4#
- 1...Qg5
- 2.Rd4#
- 1...Qg7
- 2.Se3#
- 1...Rd8
- 2.Se3#
- 1...Qxf5!
- threat
- 1.Sc6?
- threat
- 2.Se5#
- 2.Rd4#
- 1...e3
- 2.Se5#
- 2.Qxd3#
- 1...Qf5
- 2.Rd4#
- 2.Qxd3#
- 1...Qh5
- 2.Rd4#
- 2.Qxd3#
- 1...Qe6
- 2.Rd4#
- 2.Qxd3#
- 1...Qf4
- 2.Rd4#
- 1...Qg5
- 2.Rd4#
- 1...Qg7
- 2.Qxd3#
- 1...Rd8
- 2.Sxa5#
- 2.Se5#
- 1...Re8
- 2.Sxa5#
- 2.Rd4#
- 1...Qxd7!
- threat
- 1.Qxc2+?
- 1...Kb4
- 2.Qb3#
- 1...dxc2!
- 1...Kb4
- 1.Qxd3+?
- 1...Kb4
- 2.Sd5#
- 2.Sc6#
- 2.Rd4#
- 2.Qb3#
- 1...exd3!
- 1...Kb4
- 1.Sxd3?
- Keys
- 1.Sxe4!
- threat
- 2.Sd6#
- 2.Rd4#
- 2.Rc7#
- 2.Qc3#
- 1...Qxd7
- 2.Sd6#
- 2.Qc3#
- 1...Qxe4
- 2.Rc7#
- 1...Bxe4
- 2.Rd4#
- 1...Qf5
- 2.Sd6#
- 2.Rd4#
- 2.Qc3#
- 1...Qh5
- 2.Sd6#
- 2.Rd4#
- 2.Qc3#
- 1...Qe6
- 2.Sd6#
- 2.Rd4#
- 2.Qc3#
- 1...Qf4
- 2.Sd6#
- 2.Rd4#
- 1...Qg5
- 2.Sd6#
- 2.Rd4#
- 1...Qg6
- 2.Sd6#
- 2.Rd4#
- 2.Qc3#
- 1...Qg7
- 2.Sd6#
- 2.Rc7#
- 1...Ra7
- 2.Sd6#
- 2.Rd4#
- 2.Qc3#
- 1...Rc8
- 2.Sd6#
- 2.Rd4#
- 2.Qc3#
- 1...Rd8
- 2.Sd6#
- 2.Rc7#
- 2.Qc3#
- threat
- 1.Sxe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(E);XP(b)
- Threat
- DUALS(5)
- Vars
- Q(g);P_SPINP(f)::R(G)
- Refutation
- P(f);P_SPINQ(g),XS(E)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(g);P_PINQ(B)::R1(G)
- Q(g);P_PINQ(B),P_SPINP(f)::R1(G)
- R(i);::R1(G)
- R(i);::R(G)
- P(f);N_GUARD,P_SPINQ(g)::QAB1(B),XP(b)
- Refutation
- Q(g);P_SPINP(f),XR(G)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(g);P_SPINP(f),XS(E)::R1(G)
- Q(g);P_SPINP(f)::R1(G)
- Q(g);P_PINQ(B)::R1(G)
- Q(g);P_PINQ(B),P_SPINP(f)::R1(G)
- Q(g);P_SPINP(f)::R(G)
- R(i);::R1(G)
- R(i);::R(G)
- Refutation
- P(f);P_SPINQ(g)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- P(f);P_SPINQ(g)::S(E)
- Q(g);P_SPINP(f)::R1(G)
- Q(g);P_PINQ(B)::R1(G)
- Refutation
- Q(g);P_SPINP(f),XR(G)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- P(f);P_SPINQ(g)::S(H),XP(f)
- Q(g);P_PINQ(B)::R1(G)
- Q(g);P_PINQ(B),P_SPINP(f)::R1(G)
- Q(g);P_SPINP(f)::S(H)
- R(i);::S(H)
- Refutation
- Q(g);P_SPINP(f),XS(H)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(g);P_PINQ(B)::R1(G)
- Q(g);P_PINQ(B),P_SPINP(f)::R1(G)
- Q(g);P_SPINP(f)::QAB1(B),XP(b)
- Refutation
- Q(g);P_SPINP(f),XR(G)
- Try
- Q(B);CHECK,XP(a)
- Vars
- K(e);P-FLIGHT::QAR1(B)
- Refutation
- P(b);XQ(B)
- Try
- Q(B);CHECK,XP(b)
- Refutation
- P(f);P_SPINQ(g),XQ(B)
- Try
- Actual
- S(E);XP(f)
- Threat
- DUALS(4)
- Vars
- Q(g);P_SPINQ(g),XS(E)::R(G)
- B(c);XS(E)::R1(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).