MESON Chess Problem Database
Problem Display
PID: 124342 (8/8/1KPP3q/3kPQ2/1R3n2/NP4B1/4b3/3r4 w - - 0 1)
Lider, Valentin Viktorovich
Northwest Chess, 1976
#2
9 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Qe4#
- 1...Sg2
- 2.e6#
- 1...Sh3
- 2.e6#
- 1...Sh5
- 2.e6#
- 1...Se6
- 2.Qe4#
- 1...Sg6
- 2.Qf7#
- 1...Qe6
- Tries
- 1.Sb5?
- threat
- 2.Sc3#
- 2.Sc7#
- 2.e6#
- 1...Qxd6
- 2.Sc3#
- 2.exd6#
- 1...Qg5
- 2.Sc3#
- 2.Sc7#
- 1...Qg7
- 2.Sc3#
- 1...Qf8
- 2.Sc3#
- 2.Sc7#
- 1...Qh3
- 2.Sc3#
- 2.Sc7#
- 1...Qh5
- 2.Sc3#
- 2.Sc7#
- 1...Qe6
- 2.Sc3#
- 2.Sc7#
- 2.Qe4#
- 1...Qf6
- 2.Sc3#
- 2.Sc7#
- 2.exf6#
- 1...Qg6
- 2.Sc3#
- 2.Sc7#
- 1...Qh7
- 2.Sc3#
- 1...Qh8
- 2.Sc3#
- 2.Sc7#
- 1...Rc1
- 2.Sc7#
- 2.Rd4#
- 2.e6#
- 1...Rd3
- 2.Sc7#
- 2.e6#
- 1...Bd3
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 1...Bc4
- 2.bxc4#
- 2.e6#
- 1...Bg4
- 2.Sc3#
- 2.Sc7#
- 1...Sd3
- 2.Sc3#
- 2.Sc7#
- 2.Rd4#
- 1...Se6
- 2.Sc3#
- 2.Qe4#
- 1...Sg6
- 2.Sc3#
- 2.Sc7#
- 2.Qf7#
- 1...Bxb5!
- threat
- 1.Sb5?
- Keys
- 1.Sc2!
- threat
- 2.Se3#
- 1...Rd3
- 2.Rb5#
- 1...Bc4
- 2.bxc4#
- 1...Sg2
- 2.e6#
- 1...Sd3
- 2.Rd4#
- 1...Sh3
- 2.e6#
- 1...Sh5
- 2.e6#
- 1...Se6
- 2.Qe4#
- 1...Sg6
- 2.Qf7#
- threat
- 1.Sc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- Q(e);SBLOCK::QAB1(F)
- S(c);::QAR(F)+P(E)
- S(c);SBLOCK::QAB1(F)
- S(c);N_GUARD,S_CUTQ(e)::QAB(F)
- Tries
- Try
- S(A);
- Threat
- DUALS(3)
- Vars
- Q(e);::S(A)
- Refutation
- B(b);XS(A)
- Try
- Actual
- S(A);
- Threat
- S(A)
- Vars
- R(a);S_CUTB(b)::R(D)
- B(b);OGATE::P(B),XB(b)
- S(c);::QAR(F)+P(E)
- S(c);S_CUTR(a)::R1(D)
- S(c);SBLOCK::QAB1(F)
- S(c);N_GUARD,S_CUTQ(e)::QAB(F)
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).