MESON Chess Problem Database

Problem Display
PID: 177969 (5B2/8/8/1RqNkP2/6B1/5Q1K/6n1/b2R4 w - - 0 1)

Studenetsky, Alexei

Sahs (Latvia), 1987

5B2/8/8/1RqNkP2/6B1/5Q1K/6n1/b2R4

#2

8 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Qf4#
    • 1...Se3
      • 2.Qf4#
    • 1...Sf4+
      • 2.Qxf4#
    • 1...Sh4
      • 2.Qf4#
  • Tries
    • 1.Qg3+?
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Ke4!
  • Keys
    • 1.f6!
      • threat
        • 2.Qf5#
      • 1...Sf4+
        • 2.Qxf4#
      • 1...Qxf8
        • 2.Se7#
      • 1...Qe7
        • 2.Sxe7#
      • 1...Qf2
        • 2.Se3#
      • 1...Qa3
        • 2.Sb4#
      • 1...Qe3
        • 2.Sxe3#
      • 1...Qc2
        • 2.Sc3#
      • 1...Qc3
        • 2.Sxc3#
      • 1...Qc8
        • 2.Sc7#
      • 1...Se3
        • 2.Qf4#
      • 1...Sh4
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD::QAB1(B)
    • S(b);CHECK,N_GUARD::QAB1(B),XS(b)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(b);CHECK,N_GUARD,P_SPINS(b)::QAB1(B),XS(b)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • P(G);
    • Threat
      • QAR1(B)
    • Vars
      • S(b);CHECK,N_GUARD::QAB1(B),XS(b)
      • Q(c);XB(H)::R(E)+S(F)
      • Q(c);::R(E)+S(F),XQ(c)
      • Q(c);::R(E)+S(F)
      • Q(c);P_PINQ(B)::R(E)+S(F)
      • Q(c);P_PINQ(B)::R(E)+S(F),XQ(c)
      • Q(c);P_PINB(D)::R(E)+S(F)
      • S(b);N_GUARD::QAB1(B)
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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).