MESON Chess Problem Database

Problem Display
PID: 17540 (5n1Q/6q1/3P3b/1P1kPB2/1P5R/2B5/N1R5/K2N4 w - - 0 1)

Blikeng, Bjarne

1st Prize, Przepiorka MT, 1947

5n1Q/6q1/3P3b/1P1kPB2/1P5R/2B5/N1R5/K2N4

#2

12 + 4

461 Schach-Express 1948
3105 FIDE Album (1945-1955) 1964
145 StrateGems 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Qxe5#
    • 1...Qg2
      • 2.Rd4#
    • 1...Qg3
      • 2.Rd4#
    • 1...Qg5
      • 2.Rd4#
    • 1...Qg6
      • 2.Rd4#
    • 1...Qb7
      • 2.Rd4#
    • 1...Qc7
      • 2.Rd4#
    • 1...Qd7
      • 2.Rd4#
    • 1...Qe7
      • 2.Rd4#
    • 1...Qf7
      • 2.Rd4#
    • 1...Qh7
      • 2.Rd4#
    • 1...Qg8
      • 2.Rd4#
    • 1...Bd2
      • 2.Rxd2#
    • 1...Be3
      • 2.Sxe3#
    • 1...Sd7
      • 2.Qa8#
  • Tries
    • 1.Qxg7?
      • threat
        • 2.Rd4#
        • 2.Qg2#
        • 2.Qb7#
      • 1...Bxg7
        • 2.Se3#
        • 2.Rd2#
      • 1...Be3
        • 2.Sxe3#
        • 2.Qg2#
        • 2.Qb7#
      • 1...Bg5
        • 2.Rd4#
        • 2.Qb7#
      • 1...Se6
        • 2.Qg2#
        • 2.Qb7#
      • 1...Sg6
        • 2.Rd4#
        • 2.Qb7#
        • 2.Qf7#
        • 2.Qg8#
      • 1...Sd7
        • 2.Rd4#
        • 2.Qg2#
        • 2.Qf7#
        • 2.Qg8#
      • 1...Bf4!
    • 1.Qg8+?
      • 1...Qf7
        • 2.Qg2#
      • 1...Se6
        • 2.Bxe6#
        • 2.Qxe6#
      • 1...Qxg8!
  • Keys
    • 1.Bb2!
      • threat
        • 2.Rc5#
      • 1...Qxe5
        • 2.Qxe5#
      • 1...Qg1
        • 2.Sc3#
      • 1...Qa7
        • 2.Sc3#
      • 1...Qc7
        • 2.Rd4#
      • 1...Be3
        • 2.Sxe3#
      • 1...Se6
        • 2.Be4#
      • 1...Sd7
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 11
  • Sets
    • Q(c);OGATE,P_PINB(E),XP(I)::QAR1(L),XQ(c)
    • Q(c);::R1(G)
    • B(b);N_GUARD::R(D),XB(b)
    • B(b);N_GUARD::S(B),XB(b)
    • S(d);OGATE::QAB(L)
  • Tries
    • Try
      • Q(L);XQ(c)
      • Threat
        • DUALS(3)
      • Refutation
        • B(b);
    • Try
      • Q(L);CHECK
      • Vars
        • Q(c);OGATE,P_SPINQ(c)::QAB(L)
      • Refutation
        • Q(c);XQ(L)
  • Actual
    • B(E);
    • Threat
      • R1(D)
    • Vars
      • Q(c);OGATE,P_PINB(E),XP(I)::QAR1(L),XQ(c)
      • Q(c);P_PINS(B)::S(C)
      • Q(c);P_PINS(C)::S(B)
      • Q(c);::R1(G)
      • B(b);N_GUARD::S(B),XB(b)
      • S(d);SBLOCK::B(J)
      • S(d);OGATE::QAB(L)
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).