MESON Chess Problem Database

Problem Display
PID: 149472 (4QK2/8/3p2N1/2bp1R2/6kB/5R2/2b5/4n3 w - - 0 1)

Shanshin, Valery Yurevich

1st Prize, Belliboni MT, 2002

4QK2/8/3p2N1/2bp1R2/6kB/5R2/2b5/4n3

#2

6 + 6

15174 FIDE Album (2001-2003) 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Se5+?
      • 1...Kxh4
        • 2.Rh5#
        • 2.Qh5#
        • 2.Qe7#
        • 2.Qd8#
      • 1...dxe5+!
    • 1.Qd7?
      • threat
        • 2.Rg3#
      • 1...Bxf5
        • 2.Qxf5#
      • 1...Sxf3
        • 2.Rg5#
      • 1...Bf2!
    • 1.Qf7?
      • threat
        • 2.Rg3#
        • 2.Rg5#
      • 1...Bxf5
        • 2.Qxf5#
      • 1...Bf2
        • 2.Rg5#
      • 1...Be3
        • 2.Rg3#
      • 1...Sxf3!
    • 1.Qe2?
      • threat
        • 2.Rg5#
      • 1...Bxf5
        • 2.Rg3#
      • 1...Sxf3
        • 2.Qxf3#
      • 1...Be3!
    • 1.Qe6?
      • threat
        • 2.Rg3#
      • 1...Bxf5
        • 2.Qxf5#
      • 1...Sxf3
        • 2.Rg5#
      • 1...Bf2!
    • 1.Qc8?
      • threat
        • 2.Rg3#
      • 1...Bxf5
        • 2.Qxf5#
      • 1...Sxf3
        • 2.Rg5#
      • 1...Bf2!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Qh5#
      • 1...Kxf3
        • 2.Qe2#
      • 1...Kxh4
        • 2.Qh5#
      • 1...Kxf5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • P(f);CHECK,XS(D)
    • Try
      • Q(E);
      • Threat
        • R1(A)
      • Vars
        • B(b);OGATE,P_SPINB(b),XR(C)::QAB1(E),XB(b)
        • S(a);SBLOCK,XR(A)::QAB(E)+R(C),DCHECK
      • Refutation
        • B(d);
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);OGATE,XR(C)::QAB1(E),XB(b)
        • B(d);::R1(C)
        • B(d);::R1(A)
      • Refutation
        • S(a);XR(A)
    • Try
      • Q(E);
      • Threat
        • R1(C)
      • Vars
        • B(b);SBLOCK,XR(C)::QAB(E)+R(A),DCHECK
        • S(a);OGATE,P_SPINS(a),XR(A)::QAB1(E),XS(a)
      • Refutation
        • B(d);
    • Try
      • Q(E);
      • Threat
        • R1(A)
      • Vars
        • B(b);OGATE,P_SPINB(b),XR(C)::QAB1(E),XB(b)
        • S(a);SBLOCK,XR(A)::QAB(E)+R(C),DCHECK
      • Refutation
        • B(d);
    • Try
      • Q(E);
      • Threat
        • R1(A)
      • Vars
        • B(b);OGATE,P_SPINB(b),XR(C)::QAB1(E),XB(b)
        • S(a);SBLOCK,XR(A)::QAB(E)+R(C),DCHECK
      • Refutation
        • B(d);
  • Actual
    • S(D);
    • Threat
      • QAB1(E)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(A)::QAB1(E)
      • K(c);P-FLIGHT,XB(B)::QAR1(E)
      • K(c);OGATEB,S_FLIGHT,XR(C)::QAB1(E)
HTML5 logo

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).