MESON Chess Problem Database

Problem Display
PID: 207426 (8/P7/6R1/5p2/2N1p3/6N1/5Pk1/4K2R w K - 0 1)

Pustovoi, Boris

Die Schwalbe, 1974

8/P7/6R1/5p2/2N1p3/6N1/5Pk1/4K2R

#2

7 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.a8Q#
      • 2.a8B#
  • Tries
    • 1.Ke2?
      • threat
        • 2.Se3#
      • 1...e3
        • 2.Sxe3#
        • 2.a8Q#
        • 2.a8B#
      • 1...f4!
    • 1.Se2+?
      • 1...Kf3
        • 2.Sd2#
        • 2.Se5#
        • 2.Rh3#
        • 2.Rg3#
      • 1...Kxh1!
    • 1.Sh5+?
      • 1...Kf3
        • 2.Sd2#
        • 2.Se5#
        • 2.Rh3#
        • 2.Rg3#
      • 1...Kxh1!
    • 1.Sd2?
      • 1...e3
        • 2.a8Q#
        • 2.a8B#
      • 1...f4!
    • 1.Se5?
      • 1...e3
        • 2.a8Q#
        • 2.a8B#
      • 1...f4!
  • Keys
    • 1.f4!
      • 1...Kf3
        • 2.0-0#
      • 1...exf4 ep
        • 2.Se3#
      • 1...e3
        • 2.a8Q#
        • 2.a8B#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);::P=Q
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • S(E)
      • Refutation
        • P(c);
    • Try
      • S(D);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • S(D);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • S(E);
      • Vars
        • P(b);::P=Q
      • Refutation
        • P(c);
    • Try
      • S(E);
      • Vars
        • P(b);::P=Q
      • Refutation
        • P(c);
  • Actual
    • P(C);
    • Vars
      • K(a);S_FLIGHT::0-0
      • P(b);EP,XP(C)::S(E)
      • P(b);::P=Q
HTML5 logo

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).