MESON Chess Problem Database

Problem Display
PID: 9536 (8/8/3Q4/8/4P2B/3Bk3/2K3b1/8 w - - 0 1)

Gavrilov, Constantin Grigorievich

Deutsche Schachzeitung, 1905

8/8/3Q4/8/4P2B/3Bk3/2K3b1/8

#2

5 + 2

193 Wiener Schachzeitung 1905
2717 Casopis ceskoslovenskych sachistu 1906
3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qg3#
  • Tries
    • 1.Bf2+?
      • 1...Kf3
        • 2.Qg3#
      • 1...Kxf2!
    • 1.Bg5+?
      • 1...Kf3
        • 2.Qf4#
      • 1...Kf2!
    • 1.Qf4+?
      • 1...Kd4
        • 2.Bf2#
      • 1...Kxf4!
  • Keys
    • 1.Qh2!
      • 1...Kf3
        • 2.Qg3#
      • 1...Kd4
        • 2.Bf2#
      • 1...Bxe4
        • 2.Qf2#
      • 1...Bf1
        • 2.Qf2#
      • 1...Bh1
        • 2.Qf2#
      • 1...Bf3
        • 2.Bf2#
      • 1...Bh3
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR1(E)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT,XB(D)
    • Try
      • B(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::B(D)
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
  • Actual
    • Q(E);
    • Vars
      • K(b);P-FLIGHT::QAR1(E)
      • K(b);S_FLIGHT::B(D)
      • B(a);OGATE,P_PINB(B),XP(C)::QAB1(E)
      • B(a);OGATE::QAB1(E)
      • B(a);SBLOCK::B(D)
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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).