MESON Chess Problem Database
Problem Display
PID: 273504 (8/1p3p2/1p3Q2/pP1k4/3P4/2KN1np1/P1N3n1/1B6 w - - 0 1)
Postnikov, Oleksandr Borisovich
Buletin Problemistic, 1997
#2
8 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Se1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sxd4
- 2.Qe5#
- 1...Sh4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...Se1
- Tries
- 1.Sa1?
- 1...Sxd4
- 2.Qe5#
- 1...Sge1
- 2.Sf4#
- 1...Se3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sgh4
- 2.Sf4#
- 1...Sfe1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sfh4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...a4
- 2.Sb4#
- 1...Ke4!
- 1...Sxd4
- 1.Sa3?
- 1...Sxd4
- 2.Qe5#
- 1...Sge1
- 2.Sf4#
- 1...Se3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sgh4
- 2.Sf4#
- 1...Sfe1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sfh4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...a4
- 2.Sb4#
- 1...Ke4!
- 1...Sxd4
- 1.Se3+?
- 1...Sxe3
- 2.Sf4#
- 1...Ke4!
- 1...Sxe3
- 1.Scb4+?
- 1...axb4+
- 2.Sxb4#
- 1...Ke4!
- 1...axb4+
- 1.Sde1?
- 1...Ke4
- 2.Qxf3#
- 1...Sgxe1
- 2.Se3#
- 1...Sfxe1
- 2.Qe5#
- 1...Se3
- 2.Sxe3#
- 1...Sf4
- 2.Se3#
- 1...Sgh4
- 2.Se3#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sfh4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...a4
- 2.Sb4#
- 1...Sxd4!
- 1...Ke4
- 1.Sdb4+?
- 1...axb4+
- 2.Sxb4#
- 1...Ke4!
- 1...axb4+
- 1.Sf4+?
- 1...Sxf4
- 2.Se3#
- 1...Ke4!
- 1...Sxf4
- 1.Sc5?
- threat
- 2.Qd8#
- 1...Sxd4
- 2.Qxd4#
- 1...Se5
- 2.Qxe5#
- 1...bxc5!
- threat
- 1.Qf5+?
- 1...Se5
- 2.Qxe5#
- 1...Kd6!
- 1...Se5
- 1.Sa1?
- Keys
- 1.Sce1!
- 1...Ke4
- 2.Qxf3#
- 1...Sgxe1
- 2.Sf4#
- 1...Sfxe1
- 2.Qe5#
- 1...Sxd4
- 2.Qe5#
- 1...Se3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sgh4
- 2.Sf4#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sfh4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...a4
- 2.Sb4#
- 1...Ke4
- 1.Sce1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD,XP(F)::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- Tries
- Try
- S(C);
- Vars
- S(b);N_GUARD,XP(F)::QAR1(H)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- P(d);N_GUARD::S(E)
- Refutation
- K(e);S_FLIGHT
- Try
- S(C);
- Vars
- S(b);N_GUARD,XP(F)::QAR1(H)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- P(d);N_GUARD::S(E)
- Refutation
- K(e);S_FLIGHT
- Try
- S(C);CHECK
- Vars
- S(a);XS(C)::S(E)
- Refutation
- K(e);S_FLIGHT
- Try
- S(C);CHECK
- Vars
- P(d);CHECK,XS(C)::S(E),XP(d)
- Refutation
- K(e);S_FLIGHT
- Try
- S(E);
- Vars
- K(e);N_GUARD,S_FLIGHT::QAB1(H),XS(b)
- S(a);N_GUARD,XS(E)::S(C)
- S(b);N_GUARD,XS(E)::QAR1(H)
- S(a);N_GUARD::S(C),XS(a)
- S(a);N_GUARD::S(C)
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- P(d);N_GUARD::S(C)
- Refutation
- S(b);XP(F)
- Try
- S(E);CHECK
- Vars
- P(d);CHECK,XS(E)::S(C),XP(d)
- Refutation
- K(e);S_FLIGHT
- Try
- S(E);CHECK
- Vars
- S(a);XS(E)::S(C)
- Refutation
- K(e);S_FLIGHT
- Try
- S(E);
- Threat
- QAR(H)
- Vars
- S(b);OGATE,XP(F)::QAR1(H),XS(b)
- S(b);N_GUARD::QAR1(H),XS(b)
- Refutation
- P(f);XS(E)
- Try
- Q(H);CHECK
- Vars
- S(b);N_GUARD,P_SPINS(b)::QAR1(H),XS(b)
- Refutation
- K(e);P-FLIGHT
- Try
- Actual
- S(C);
- Vars
- K(e);N_GUARD,S_FLIGHT::QAB1(H),XS(b)
- S(a);N_GUARD,XS(C)::S(E)
- S(b);N_GUARD,XS(C)::QAR1(H)
- S(b);N_GUARD,XP(F)::QAR1(H)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- P(d);N_GUARD::S(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).