MESON Chess Problem Database
Problem Display
PID: 180405 (7n/B3R3/6p1/3p4/6N1/1rQ1PkNK/BqRP3P/8 w - - 0 1)
Lider, Valentin Viktorovich
Source?, 1982
#2
11 + 6
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Qf6#
- 1...Qa3
- 2.Qf6#
- 1...Qb1
- 2.Qf6#
- 1...Qxa2
- 2.Qf6#
- 1...Ra3
- 2.Bxd5#
- 1...Rxc3
- 2.Bxd5#
- 1...Rb6
- 2.Bxd5#
- 1...Rb7
- 2.Bxd5#
- 1...Rb8
- 2.Bxd5#
- 1...Sf7
- 2.Rxf7#
- 1...d4
- 2.Qc6#
- 1...Qc1
- Tries
- 1.Se2?
- threat
- 2.Sg1#
- 2.Sd4#
- 1...Qxc3
- 2.Sg1#
- 1...Qa1
- 2.Sd4#
- 1...Qc1
- 2.Sd4#
- 1...Qb1
- 2.Sd4#
- 1...Rb4
- 2.Sg1#
- 1...d4
- 2.Sg1#
- 2.Sxd4#
- 1...Kxe2!
- threat
- 1.Bxb3?
- threat
- 2.Bxd5#
- 1...Qxb3
- 2.Qf6#
- 1...Qa2
- 2.Qf6#
- 1...d4
- 2.Bd5#
- 2.Qc6#
- 1...Qxc2!
- threat
- 1.Rxb2?
- threat
- 2.Qf6#
- 1...Rxc3
- 2.Bxd5#
- 1...Rb6
- 2.Bxd5#
- 1...d4
- 2.Qc6#
- 1...Rb4!
- threat
- 1.Qd4?
- threat
- 2.Qf4#
- 2.Qxd5#
- 1...Qxc2
- 2.Qf4#
- 1...Rxe3
- 2.Rxe3#
- 2.Qxe3#
- 1...Rb4
- 2.Bxd5#
- 1...Rd3
- 2.Bxd5#
- 2.Qf4#
- 1...Rb5
- 2.Qf4#
- 1...g5
- 2.Qxd5#
- 1...Qxd4!
- threat
- 1.Qd3?
- threat
- 2.Qf1#
- 2.Qe2#
- 2.Qxd5#
- 1...Qxc2
- 2.Qf1#
- 2.Qe2#
- 1...Rb4
- 2.Qf1#
- 2.Qe2#
- 1...Qa1
- 2.Qe2#
- 2.Qxd5#
- 1...Qc1
- 2.Qe2#
- 2.Qxd5#
- 1...Qd4
- 2.Qf1#
- 2.Qe2#
- 1...Qe5
- 2.Qf1#
- 2.Qe2#
- 1...Qb1
- 2.Qe2#
- 2.Qxd5#
- 1...Rb5
- 2.Qf1#
- 2.Qe2#
- 1...d4
- 2.Qf1#
- 2.Qe2#
- 2.Qe4#
- 1...Rxd3!
- threat
- 1.Qc4?
- threat
- 2.Qf1#
- 2.Qe2#
- 2.Qxd5#
- 2.Qf4#
- 1...Qxc2
- 2.Qf1#
- 2.Qe2#
- 2.Qf4#
- 1...Rxe3
- 2.Rxe3#
- 2.Qf1#
- 1...Rb4
- 2.Qf1#
- 2.Qe2#
- 1...Qa1
- 2.Qe2#
- 2.Qxd5#
- 2.Qf4#
- 1...Qc1
- 2.Qe2#
- 2.Qxd5#
- 2.Qf4#
- 1...Qd4
- 2.Qf1#
- 2.Qe2#
- 1...Qe5
- 2.Qf1#
- 2.Qe2#
- 1...Qf6
- 2.Qf1#
- 2.Qe2#
- 2.Qxd5#
- 1...Qb1
- 2.Qe2#
- 2.Qxd5#
- 2.Qf4#
- 1...Rd3
- 2.Qf4#
- 1...Rb5
- 2.Qf1#
- 2.Qe2#
- 2.Qf4#
- 1...d4
- 2.Qf1#
- 2.Qe2#
- 2.Qd5#
- 2.Qc6#
- 1...g5
- 2.Qf1#
- 2.Qe2#
- 2.Qxd5#
- 1...dxc4!
- threat
- 1.d4?
- threat
- 2.Se5#
- 1...Qxc3
- 2.Rf2#
- 1...Rxc3
- 2.Bxd5#
- 1...Sf7
- 2.Rxf7#
- 1...Qxc2!
- threat
- 1.Se2?
- Keys
- 1.d3!
- threat
- 2.Se5#
- 1...Qxc3
- 2.Rf2#
- 1...Qxc2
- 2.Qf6#
- 1...Rb6
- 2.Bxd5#
- 1...Sf7
- 2.Rxf7#
- 1...d4
- 2.Qc6#
- threat
- 1.d3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- Q(a);N_GUARD::QAR(E)
- Q(a);N_GUARD,XB(A)::QAR(E)
- R(b);OGATE::B(A),XP(d)
- R(b);OGATE,XQ(E)::B(A),XP(d)
- S(f);N_GUARD::R(K),XS(f)
- P(d);OGATEB::QAB(E)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(E)::S(G)
- Q(a);::S(G)
- R(b);::S(G)
- Refutation
- K(c);S_FLIGHT,XS(G)
- Try
- B(A);XR(b)
- Threat
- B(A),XP(d)
- Vars
- Q(a);N_GUARD,XB(A)::QAR(E)
- Q(a);N_GUARD::QAR(E)
- Refutation
- Q(a);XR(B)
- Try
- R(B);XQ(a)
- Threat
- QAR(E)
- Vars
- R(b);OGATE,XQ(E)::B(A),XP(d)
- R(b);OGATE::B(A),XP(d)
- P(d);OGATEB::QAB(E)
- Refutation
- R(b);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- Q(a);XR(B)::QAR1(E)
- R(b);OGATE::B(A),XP(d)
- R(b);::QAR1(E)
- P(e);::QAB(E),XP(d)
- Refutation
- Q(a);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(3)
- Refutation
- R(b);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(4)
- Vars
- R(b);::QAR1(E)
- Refutation
- P(d);XQ(E)
- Try
- P(C);
- Threat
- S(I)
- Vars
- Q(a);N_GUARD,XQ(E)::R1(B)
- R(b);OGATE,XQ(E)::B(A),XP(d)
- S(f);N_GUARD::R(K),XS(f)
- Refutation
- Q(a);XR(B)
- Try
- Actual
- P(C);
- Threat
- S(I)
- Vars
- Q(a);N_GUARD,XQ(E)::R1(B)
- Q(a);N_GUARD,XR(B)::QAR(E)
- R(b);OGATE::B(A),XP(d)
- S(f);N_GUARD::R(K),XS(f)
- P(d);OGATEB::QAB(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).