MESON Chess Problem Database

Problem Display
PID: 32524 (7k/b1R1N3/4N1P1/Qn4p1/1R3P2/2qr1p2/3r1p1K/BB1n1b2 w - - 0 1)

Gavrilov, G

De Problemist, 1929

7k/b1R1N3/4N1P1/Qn4p1/1R3P2/2qr1p2/3r1p1K/BB1n1b2

#2

10 + 11

57 Tijdschrift vd KNSB 1936

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Rc8#
    • 1...Qe5
      • 2.Bxe5#
    • 1...Qf6
      • 2.Bxf6#
    • 1...Qg7
      • 2.Bxg7#
    • 1...Rd4
      • 2.g7#
    • 1...Bd4
      • 2.Qa8#
    • 1...Sd4
      • 2.Qe5#
  • Tries
    • 1.Bxc3+?
      • 1...Rxc3
        • 2.g7#
      • 1...Rd4
        • 2.Rc8#
        • 2.g7#
      • 1...Bd4
        • 2.Rc8#
        • 2.Qa8#
      • 1...Sbxc3
        • 2.Qe5#
      • 1...Sd4
        • 2.Rc8#
        • 2.Qe5#
      • 1...Sdxc3!
  • Keys
    • 1.fxg5!
      • threat
        • 2.Rh4#
      • 1...Qe5+
        • 2.Bxe5#
      • 1...Qd4
        • 2.Rc8#
      • 1...Rd4
        • 2.g7#
      • 1...Bd4
        • 2.Qa8#
      • 1...Sd4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(e);S_CUTR(f)::R(I)
    • Q(e);OGATE,P_PINP(E)::B(A),XQ(e)
    • Q(e);OGATE::B(A),XQ(e)
    • R(f);N_SPINQ(e),S_CUTQ(e)::P(H)
    • B(j);N_SPINQ(e),OGATE::QAB1(F)
    • S(h);N_SPINQ(e),OGATE::QAB(F)
  • Tries
    • Try
      • B(A);CHECK,XQ(e)
      • Vars
        • R(f);XB(A)::P(H)
        • S(h);OGATE,XB(A)::QAB(F)
      • Refutation
        • S(a);XB(A)
  • Actual
    • P(E);XP(i)
    • Threat
      • R(D)
    • Vars
      • Q(e);CHECK,OGATE::B(A),XQ(e)
      • Q(e);S_CUTR(f)::R(I)
      • R(f);N_SPINQ(e),S_CUTQ(e)::P(H)
      • B(j);N_SPINQ(e),OGATE::QAB1(F)
      • S(h);N_SPINQ(e),OGATE::QAB(F)
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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).