MESON Chess Problem Database

Problem Display
PID: 275570 (5K2/B7/2PpP3/3B2p1/rRNN1kp1/8/2P3R1/Qb3r2 w - - 0 1)

Kuligin, Nikolai Volodimirovich

Satanovsky, Mikhail S

Buletin Problemistic, 1977

5K2/B7/2PpP3/3B2p1/rRNN1kp1/8/2P3R1/Qb3r2

#2

11 + 7

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Qxf1#
    • 1...Bxc2
      • 2.Qxf1#
  • Tries
    • 1.Sxd6?
      • threat
        • 2.Se2#
      • 1...Ke3+
        • 2.S4f5#
      • 1...Rxa1
        • 2.Sf3#
      • 1...Rxa7
        • 2.S4f5#
      • 1...Ke5+!
  • Keys
    • 1.Se3!
      • threat
        • 2.Se2#
      • 1...Kxe3+
        • 2.Sf5#
      • 1...Ke5+
        • 2.Sf3#
      • 1...Rxa1
        • 2.Sf3#
      • 1...Rxa7
        • 2.Sdf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(a);OGATE::QAR(A),XR(b)
    • B(a);OGATE,XP(B)::QAR(A),XR(b)
  • Tries
    • Try
      • S(E);XP(g)
      • Threat
        • R(D)+S(F),DCHECK
      • Vars
        • K(d);CHECK,S_FLIGHT::B(J)+S(F),DCHECK
        • R(c);N_GUARD,XQ(A)::R(D)+S(F)
        • R(c);N_GUARD,XB(J)::R(D)+S(F)
      • Refutation
        • K(d);CHECK,S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • R(D)+S(F),DCHECK
    • Vars
      • K(d);CHECK,S_FLIGHT,XS(E)::B(J)+S(F),DCHECK
      • K(d);CHECK,S_FLIGHT::QAB(A)+S(F),DCHECK
      • R(c);N_GUARD,XQ(A)::R(D)+S(F)
      • R(c);N_GUARD,XB(J)::R(D)+S(F)
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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).