MESON Chess Problem Database

Problem Display
PID: 238811 (8/2KPQ3/4BPp1/3NB3/b1PpkP1R/3p3R/6Pq/2b2N2 w - - 0 1)

Janevski, Zivko

4th Comm., Uralski Problemist, 2012

8/2KPQ3/4BPp1/3NB3/b1PpkP1R/3p3R/6Pq/2b2N2

#2

13 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sg3#
    • 1...Qg3
      • 2.Sxg3#
    • 1...Qh1
      • 2.Sg3#
    • 1...Bb2
      • 2.Sd2#
    • 1...Bd2
      • 2.Sxd2#
    • 1...Ba3
      • 2.Sd2#
    • 1...g5
      • 2.Qh7#
  • Tries
    • 1.Bg4?
      • threat
        • 2.Bd6#
      • 1...Qxf4
        • 2.Bxf4#
      • 1...Bxf4
        • 2.Bxf4#
      • 1...Bxd7!
    • 1.Bf5+?
      • 1...gxf5
        • 2.Bd6#
      • 1...Kxf5!
    • 1.Re3+?
      • 1...dxe3
        • 2.Sc3#
      • 1...Bxe3!
    • 1.Qc5?
      • threat
        • 2.Qxd4#
      • 1...Qg1
        • 2.Sg3#
      • 1...Bb2
        • 2.Sd2#
      • 1...Be3!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Bg4#
      • 1...Qxf4
        • 2.Sg3#
      • 1...Bxf4
        • 2.Sd2#
      • 1...Bxd7
        • 2.Bxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD::S(A)
    • Q(b);N_GUARD::S(A),XQ(b)
    • B(a);N_GUARD::S(A)
    • B(a);N_GUARD::S(A),XB(a)
    • P(g);OGATEB::QAB(M)
  • Tries
    • Try
      • B(I);
      • Threat
        • QAR(M)+B(H)
      • Vars
        • Q(b);OGATE,P_PINB(H),XP(E)::QAR(M)+B(H),XQ(b)
        • B(a);OGATE,P_PINB(H),XP(E)::QAR(M)+B(H),XB(a)
      • Refutation
        • B(d);XP(L)
    • Try
      • B(I);CHECK
      • Vars
        • P(g);SBLOCK,XB(I)::QAR(M)+B(H)
      • Refutation
        • K(f);S_FLIGHT,XB(I)
    • Try
      • R(C);CHECK
      • Vars
        • P(e);XR(C)::S(G)
      • Refutation
        • B(a);XR(C)
    • Try
      • Q(M);
      • Threat
        • QAR1(M),XP(e)
      • Vars
        • Q(b);N_GUARD::S(A)
        • B(a);N_GUARD::S(A)
      • Refutation
        • B(a);
  • Actual
    • B(H);
    • Threat
      • QAR(M)+B(I)
    • Vars
      • Q(b);N_GUARD,P_PINB(H),P_SPINQ(b),XP(E)::S(A)
      • B(a);N_GUARD,P_PINB(H),P_SPINB(a),XP(E)::S(A)
      • B(d);OGATE,XP(L)::QAR(M)+B(I),XB(d)
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).