Problem Display
PID: 142541 (bK2B2B/2R5/pp1k4/1P1P4/1R6/8/Q6b/5n2 w - - 0 1)

Mosiashvili, Givi

3rd Prize, Problem-Forum, 2006

bK2B2B/2R5/pp1k4/1P1P4/1R6/8/Q6b/5n2

#2

8 + 6


23 Die Schwalbe 2011

SOLUTION


  • SOUND
  • Tries
    • 1.Rbc4?
      • threat
        • 2.Rd7#
      • 1...Kxd5
        • 2.Rd4#
      • 1...Bc6
        • 2.R4xc6#
      • 1...Bxd5!
    • 1.Rd4?
      • threat
        • 2.Qa3#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...axb5!
    • 1.Qc4?
      • threat
        • 2.Rd7#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bxd5!
    • 1.Qa3?
      • threat
        • 2.Rd4#
      • 1...Bxd5
        • 2.Re4#
      • 1...axb5
        • 2.Rxb5#
      • 1...Kxd5!
  • Keys
    • 1.Re4!
      • threat
        • 2.Re6#
      • 1...Bxd5
        • 2.Qa3#
      • 1...Bc6
        • 2.Rxc6#
      • 1...Be5
        • 2.Bxe5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • R1(E)
      • Vars
        • K(e);OGATEB,P-FLIGHT,P_PINR(E),XP(D)::QAB(A)+R(B),DCHECK
        • B(f);N_GUARD::R1(B),XB(f)
      • Refutation
        • B(f);XP(D)
    • Try
      • R(B);
      • Threat
        • QAB(A)
      • Vars
        • B(f);OGATE,P_SPINB(f),XP(D)::QAR1(A),XB(f)
      • Refutation
        • P(c);XP(C)
    • Try
      • Q(A);
      • Threat
        • R1(E)
      • Vars
        • B(f);N_GUARD::QAR1(A),XB(f)
      • Refutation
        • B(f);XP(D)
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(B)
      • Vars
        • B(f);SBLOCK,XP(D)::QAB(A)+R(B)
        • P(c);OGATE,XP(C)::QAB(A)+R(B),XP(c)
      • Refutation
        • K(e);P-FLIGHT,P_PINR(E),XP(D)
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • B(f);SBLOCK,XP(D)::QAB(A)
      • B(f);N_GUARD::R1(E),XB(f)
      • B(b);N_GUARD::B(H),XB(b)


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).