MESON Chess Problem Database

Problem Display
PID: 110139 (3B3b/5b2/2p1k3/2K1Np2/2R5/p2ppBN1/8/Q7 w - - 0 1)

Gamza, Grigory Stepanovich

Kudesnik, 1993

3B3b/5b2/2p1k3/2K1Np2/2R5/p2ppBN1/8/Q7

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Bg4#
  • Tries
    • 1.Bxc6?
      • threat
        • 2.Bd5#
        • 2.Bd7#
      • 1...Be8
        • 2.Bd5#
      • 1...Bxe5!
    • 1.Re4?
      • threat
        • 2.Qa2#
      • 1...fxe4
        • 2.Bg4#
      • 1...a2
        • 2.Qxa2#
      • 1...Bxe5!
    • 1.Qa2?
      • threat
        • 2.Re4#
      • 1...Bxe5
        • 2.Rd4#
      • 1...Kxe5!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Rd6#
      • 1...Kxe5
        • 2.Re4#
      • 1...Bxe5
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(d);OGATEB::B(B)
  • Tries
    • Try
      • B(B);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • B(g);::B(B)
      • Refutation
        • B(h);XS(F)
    • Try
      • R(D);
      • Threat
        • QAB(A)
      • Vars
        • P(d);OGATEB,XR(D)::B(B)
        • P(a);::QAB(A),XP(a)
      • Refutation
        • B(h);P_SPINB(h),XS(F)
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(D)
      • Vars
        • B(h);SBLOCK,XS(F)::QAB(A)+R(D)
      • Refutation
        • K(f);P-FLIGHT,XS(F)
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • K(f);OGATEB,P-FLIGHT,XS(F)::QAB(A)+R(D),DCHECK
      • B(h);SBLOCK,XS(F)::QAB(A)
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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).