MESON Chess Problem Database
Problem Display
PID: 265946 (2N5/2RBR3/3P4/3k4/pb4n1/n1PP4/6b1/2KQ4 w - - 0 1)
Lebedev, Aleksandr N
Mochalkin, Oleksandr Viktorovich
2nd HM., Buletin Problemistic, 1994
#2
9 + 6
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Bf1
- 2.Qf3#
- 1...Bh1
- 2.Qxh1#
- 1...Bf3
- 2.Qxf3#
- 1...Bh3
- 2.Qf3#
- 1...Be4
- 2.dxe4#
- 1...Bc5
- 2.Bc6#
- 1...Bxd6
- 2.Sb6#
- 1...Sc4
- 2.dxc4#
- 1...Sf2
- 2.Qh5#
- 1...Sh2
- 2.Qh5#
- 1...Se5
- 2.Be6#
- 1...Bf1
- Tries
- 1.Re4?
- threat
- 2.Be6#
- 1...Se5
- 2.Rd4#
- 1...Bxe4!
- threat
- 1.Re6?
- threat
- 2.Sb6#
- 2.Se7#
- 1...Bxd6
- 2.Sb6#
- 1...Ba5
- 2.Se7#
- 1...Bc5
- 2.Se7#
- 1...Sc4
- 2.Se7#
- 2.dxc4#
- 1...Bxc3!
- threat
- 1.Qb3+?
- 1...Sc4
- 2.Qxc4#
- 2.dxc4#
- 1...axb3!
- 1...Sc4
- 1.Qxa4?
- threat
- 2.Qc6#
- 2.Qa8#
- 1...Ba5
- 2.Qc6#
- 2.Qd4#
- 1...Sb5
- 2.Qb3#
- 2.Qa2#
- 2.Qa8#
- 1...Se5
- 2.Be6#
- 1...Bxc3!
- threat
- 1.Qxg4?
- threat
- 2.Qf5#
- 2.Qh5#
- 2.Qe6#
- 2.Qxg2#
- 2.Qd4#
- 2.Qg5#
- 2.Qg8#
- 1...Bxd6
- 2.Sb6#
- 2.Qe6#
- 2.Qxg2#
- 2.Qd4#
- 2.Qg8#
- 1...Bf1
- 2.Qf3#
- 2.Qf5#
- 2.Qh5#
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 2.Qg5#
- 2.Qg8#
- 1...Bh1
- 2.Qf5#
- 2.Qh5#
- 2.Qe6#
- 2.Qd4#
- 2.Qg5#
- 2.Qg8#
- 1...Bf3
- 2.Qxf3#
- 2.Qf5#
- 2.Qe6#
- 2.Qd4#
- 2.Qg5#
- 2.Qg8#
- 1...Bh3
- 2.Qf3#
- 2.Qd4#
- 2.Qe4#
- 1...Be4
- 2.Qe6#
- 2.Qxe4#
- 2.Qg8#
- 2.dxe4#
- 1...Bc5
- 2.Bc6#
- 2.Qf5#
- 2.Qh5#
- 2.Qe6#
- 2.Qxg2#
- 2.Qg5#
- 2.Qg8#
- 1...Sc2
- 2.Qf5#
- 2.Qh5#
- 2.Qe6#
- 2.Qxg2#
- 2.Qc4#
- 2.Qg5#
- 2.Qg8#
- 2.c4#
- 1...Sc4
- 2.Qe6#
- 2.Qxg2#
- 2.Qxc4#
- 2.Qd4#
- 2.Qg8#
- 2.dxc4#
- 1...Sb5
- 2.Qf5#
- 2.Qh5#
- 2.Qe6#
- 2.Qxg2#
- 2.Qc4#
- 2.Qg5#
- 2.Qg8#
- 2.c4#
- 1...Bxc3!
- threat
- 1.c4+?
- 1...Sxc4
- 2.dxc4#
- 1...Kd4!
- 1...Sxc4
- 1.Re4?
- Keys
- 1.d4!
- 1...Bxc3
- 2.Rc5#
- 1...Bxd6
- 2.Sb6#
- 1...Bc5
- 2.Rxc5#
- 1...Se5
- 2.Rxe5#
- 1...Ba5
- 2.Rc5#
- 1...Bf1
- 2.Qf3#
- 1...Bh1
- 2.Qxh1#
- 1...Bf3
- 2.Qxf3#
- 1...Bh3
- 2.Qf3#
- 1...Be4
- 2.Be6#
- 1...Sb1
- 2.c4#
- 1...Sc2
- 2.c4#
- 1...Sc4
- 2.Bc6#
- 1...Sb5
- 2.c4#
- 1...Sf2
- 2.Re5#
- 2.Qh5#
- 1...Sh2
- 2.Re5#
- 2.Qh5#
- 1...Se3
- 2.Re5#
- 1...Sf6
- 2.Re5#
- 1...Sh6
- 2.Re5#
- 1...Bxc3
- 1.d4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 8
- REMOVED MATES = 2
- Sets
- B(a);N_GUARD::QAB(B)
- B(a);OGATEB::QAB(B),XB(a)
- B(a);N_GUARD::QAB(B),XB(a)
- B(a);OGATE::QAR(B)+P(D)DCHECK,XB(a)
- B(d);SBLOCK::B(G)
- B(d);SBLOCK,XP(E)::S(I)
- S(b);OGATE::QAR(B)+P(D)DCHECK,XS(b)
- S(e);OGATE::QAR(B)
- S(e);SBLOCK::B(G)
- Tries
- Try
- R(H);
- Threat
- B(G)
- Vars
- S(e);SBLOCK::R1(H)
- Refutation
- B(a);XR(H)
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- B(d);XP(E)::S(I)
- B(d);::S(I)
- Refutation
- B(d);XP(C)
- Try
- Q(B);CHECK
- Refutation
- P(c);XQ(B)
- Try
- Q(B);XP(c)
- Threat
- DUALS(2)
- Vars
- S(e);SBLOCK::B(G)
- Refutation
- B(d);XP(C)
- Try
- Q(B);XS(e)
- Threat
- DUALS(7)
- Refutation
- B(d);XP(C)
- Try
- P(C);CHECK
- Vars
- S(b);OGATE,XP(C)::QAR(B)+P(D)DCHECK,XS(b)
- Refutation
- K(f);P-FLIGHT
- Try
- Actual
- P(D);
- Vars
- B(d);N_GUARD,XP(C)::R1(F)
- B(d);SBLOCK,XP(E)::S(I)
- B(d);N_GUARD::R1(F),XB(d)
- S(e);N_GUARD::R1(H),XS(e)
- B(d);N_GUARD::R1(F)
- B(a);N_GUARD::QAB(B)
- B(a);OGATEB::QAB(B),XB(a)
- B(a);N_GUARD::QAB(B),XB(a)
- B(a);SBLOCK::B(G)
- S(b);N_GUARD::P(C)
- S(b);SBLOCK::B(G)
- S(e);N_GUARD::R1(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).