MESON Chess Problem Database

Problem Display
PID: 69712 (8/R7/3p2p1/n2k1pP1/3P4/3Q1K1B/7B/8 w - - 0 1)

Amirov, Talip Khasanovich

Schach, 1976

8/R7/3p2p1/n2k1pP1/3P4/3Q1K1B/7B/8

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qe4#
      • 2.d5#
  • Tries
    • 1.Rc7?
      • 1...Ke6
        • 2.Qe4#
        • 2.d5#
      • 1...Sb3
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sb7
        • 2.Qc4#
      • 1...f4
        • 2.Qe4#
      • 1...Sc6!
    • 1.Qb5+?
      • 1...Ke6
        • 2.d5#
      • 1...Kxd4!
  • Keys
    • 1.Bf1!
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6
        • 2.d5#
      • 1...Sb3
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc6
        • 2.Qc4#
      • 1...Sb7
        • 2.Qc4#
      • 1...f4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(G);
      • Vars
        • S(a);N_GUARD::QAB1(B)
        • S(a);N_GUARD::QAB1(B),XS(a)
        • P(c);N_GUARD::QAB1(B)
      • Refutation
        • S(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,P_SPINP(c),S_FLIGHT::P(E)
      • Refutation
        • K(b);P-FLIGHT,XP(E)
  • Actual
    • B(D);
    • Vars
      • K(b);S_FLIGHT::QAB1(B)
      • K(b);OGATE,S_FLIGHT::P(E)
      • S(a);N_GUARD::QAB1(B)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • P(c);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).