MESON Chess Problem Database

Problem Display
PID: 179475 (4BB2/6pp/2NP1P2/R1b2NkP/R5P1/2Q5/3P2K1/8 w - - 0 1)

Davidenko, Fedor Vasilevich

Comm., Bulletin of the Central Chess Club of USSR, 1978

4BB2/6pp/2NP1P2/R1b2NkP/R5P1/2Q5/3P2K1/8

#2

13 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...gxf6
      • 2.Bh6#
    • 1...g6
      • 2.Bh6#
  • Tries
    • 1.Rxc5?
      • 1...gxf6
        • 2.Bh6#
        • 2.Qe3#
      • 1...g6
        • 2.Bh6#
      • 1...h6!
    • 1.Qe3+?
      • 1...Kxf6
        • 2.Be7#
        • 2.Bxg7#
        • 2.Qe7#
      • 1...Bxe3!
  • Keys
    • 1.Sfd4!
      • 1...Kf4
        • 2.Se6#
      • 1...Kxg4
        • 2.Qg3#
      • 1...Kh4
        • 2.Sf3#
      • 1...Kxf6
        • 2.Be7#
      • 1...Kh6
        • 2.Qe3#
      • 1...gxf6
        • 2.Sf3#
      • 1...g6
        • 2.Sf3#
      • 1...h6
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE,XP(K)::B(M)
    • P(c);OGATE::B(M)
  • Tries
    • Try
      • R(F);XB(a)
      • Vars
        • P(c);OGATE::B(M)
      • Refutation
        • P(d);
    • Try
      • Q(C);CHECK
      • Refutation
        • B(a);XQ(C)
  • Actual
    • S(G);P_PINB(a)
    • Vars
      • K(b);N_SPINB(a),S_FLIGHT::R(D)+S(G),DCHECK
      • K(b);N_SPINB(a),OGATEB,P-FLIGHT,XP(E)::QAR1(C)
      • K(b);N_SPINB(a),S_FLIGHT::S(G)
      • K(b);N_SPINB(a),OGATEB,S_FLIGHT,XP(K)::B(M)
      • K(b);N_SPINB(a),P_SPINP(c),S_FLIGHT::QAB(C)
      • P(c);XP(K)::S(G)
      • P(c);::S(G)
      • P(d);SBLOCK::S(G)
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).