MESON Chess Problem Database

Problem Display
PID: 160030 (8/5N1K/8/8/5pk1/2NP4/7Q/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Prapor peremogi, 1987

8/5N1K/8/8/5pk1/2NP4/7Q/8

#2

5 + 2

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Sd1?
      • 1...Kf3
        • 2.Se5#
      • 1...f3
        • 2.Se3#
      • 1...Kf5!
    • 1.Se4?
      • 1...Kf5
        • 2.Qh3#
      • 1...f3
        • 2.Sh6#
      • 1...Kf3!
    • 1.Sh6+?
      • 1...Kg5
        • 2.Se4#
      • 1...Kf3!
    • 1.Qg2+?
      • 1...Kf5
        • 2.Qg6#
      • 1...Kh5
        • 2.Qh3#
        • 2.Qg5#
      • 1...Kh4!
  • Keys
    • 1.Sd5!
      • 1...Kf3
        • 2.Se5#
      • 1...Kf5
        • 2.Qh3#
      • 1...f3
        • 2.Se3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);S_FLIGHT::S(D)
        • P(a);N_GUARD,SBLOCK::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(b);S_FLIGHT::QAB(A)
        • P(a);SBLOCK::S(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(b);S_FLIGHT::S(D)
      • K(b);S_FLIGHT::QAB(A)
      • P(a);N_GUARD,SBLOCK::S(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).