MESON Chess Problem Database

Problem Display
PID: 235460 (4N3/1p6/6pr/3PkPB1/p5br/1QppK2p/8/8 w - - 0 1)

Pituk, Alexander

Raketa, 1941

4N3/1p6/6pr/3PkPB1/p5br/1QppK2p/8/8

#2

6 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf5
      • 2.Bf6#
    • 1...gxf5
      • 2.Bf4#
  • Tries
    • 1.Qxc3+?
      • 1...Kxf5
        • 2.Qf6#
      • 1...Kxd5!
    • 1.d6?
      • threat
        • 2.Qe6#
        • 2.Qb5#
      • 1...Kxf5
        • 2.Qd5#
      • 1...Bxf5
        • 2.Bf6#
      • 1...gxf5
        • 2.Bf4#
      • 1...Bf3
        • 2.Qe6#
      • 1...b5
        • 2.Qe6#
        • 2.Qxb5#
      • 1...axb3!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qe6#
      • 1...Kxd5
        • 2.Qb5#
      • 1...Kxf5
        • 2.Qf6#
      • 1...Bxf5
        • 2.Qd6#
      • 1...gxf5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(e);SBLOCK,XP(D)::B(E)
    • P(h);SBLOCK,XP(D)::B(E)
  • Tries
    • Try
      • Q(A);CHECK,XP(a)
      • Vars
        • K(g);OGATE,P-FLIGHT,XP(D)::QAR1(A)
      • Refutation
        • K(g);P-FLIGHT,XP(C)
    • Try
      • P(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(g);P-FLIGHT,XP(D)::QAR2(A)
        • B(e);SBLOCK,XP(D)::B(E)
        • P(h);SBLOCK,XP(D)::B(E)
        • B(e);::QAR1(A)
      • Refutation
        • P(d);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(g);OGATEB,P-FLIGHT,XP(C)::QAR2(A)
      • K(g);P-FLIGHT,XP(D)::QAR1(A)
      • B(e);SBLOCK,XP(D)::QAB1(A)
      • P(h);SBLOCK,XP(D)::QAB1(A)
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).