MESON Chess Problem Database

Problem Display
PID: 154481 (8/3RK3/r3p3/3Nk3/1p4Q1/3bp2B/7b/8 w - - 0 1)

Gamza, Grigory Stepanovich

Zadachi i Etyudi, 1995

8/3RK3/r3p3/3Nk3/1p4Q1/3bp2B/7b/8

#2

5 + 7

5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
    • 1...Be4
      • 2.Qg7#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Qd4#
      • 1...Bf4
        • 2.Qg7#
      • 1...Be4
        • 2.Qxe4#
      • 1...Rd6!
  • Keys
    • 1.Sb6!
      • threat
        • 2.Qd4#
      • 1...Bf4
        • 2.Qxe6#
      • 1...Be4
        • 2.Sc4#

Anticipated by 102860(1980)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB1(B)
    • B(a);N_GUARD::QAB1(B),XB(a)
    • B(b);SBLOCK::QAB(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(B)
      • Vars
        • B(a);SBLOCK::QAB(B)
        • B(b);N_GUARD::QAR1(B),XB(b)
      • Refutation
        • R(f);
  • Actual
    • S(C);
    • Threat
      • QAB1(B)
    • Vars
      • B(a);SBLOCK::QAR1(B),XP(g)
      • B(b);N_GUARD::S(C)
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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).