MESON Chess Problem Database

Problem Display
PID: 71701 (3qR1bb/4p2N/8/1N4Q1/4kB1K/8/B1r1P3/3R4 w - - 0 1)

Gavrilov, Constantin Grigorievich

Revista de Sah, 1939

3qR1bb/4p2N/8/1N4Q1/4kB1K/8/B1r1P3/3R4

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Sd6#
    • 1...Qd6
      • 2.Sxd6#
    • 1...Qa8
      • 2.Sd6#
    • 1...Qc8
      • 2.Sd6#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bf6
      • 2.Sxf6#
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qf4#
      • 1...Qxd6
        • 2.Sxd6#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bf6
        • 2.Sxf6#
      • 1...e5
        • 2.Rd4#
      • 1...e6
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(d);N_GUARD::S(F)
    • Q(d);N_GUARD::S(F),XQ(d)
    • B(f);N_GUARD,N_SPINP(c)::QAR1(G),XB(f)
    • B(f);N_GUARD,P_PINQ(G)::S(H),XB(f)
  • Actual
    • B(D);
    • Threat
      • QAR1(G)
    • Vars
      • Q(d);XB(D)::S(F),XQ(d)
      • B(f);N_GUARD,N_SPINP(c)::QAR1(G),XB(f)
      • B(f);N_GUARD,P_PINQ(G)::S(H),XB(f)
      • P(c);P_PINQ(G),S_CUTB(f)::R1(A)
      • P(c);P_PINQ(G),S_CUTB(e)::B(B)
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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).