MESON Chess Problem Database

Problem Display
PID: 187637 (8/8/6p1/3pp1K1/q3k3/2Pp1N1p/3P2B1/2n2Qnb w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Sydney Herald, 1909

8/8/6p1/3pp1K1/q3k3/2Pp1N1p/3P2B1/2n2Qnb

#2

6 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf3+
      • 2.Qxf3#
  • Tries
    • 1.Sxg1+?
      • 1...hxg2
        • 2.Qf3#
      • 1...Bxg2!
    • 1.Sxe5+?
      • 1...Kxe5
        • 2.Qf6#
      • 1...Bxg2
        • 2.Qf4#
      • 1...hxg2
        • 2.Qf4#
      • 1...Sf3+!
    • 1.Bxh1?
      • threat
        • 2.Sxg1#
      • 1...Sxf3+
        • 2.Bxf3#
        • 2.Qxf3#
      • 1...Sge2
        • 2.Se1#
        • 2.Sg1#
        • 2.Sh2#
        • 2.Sd4#
        • 2.Sh4#
      • 1...Qd1!
    • 1.Qf2?
      • threat
        • 2.Qe3#
        • 2.Qh4#
      • 1...Sxf3+
        • 2.Qxf3#
      • 1...Bxg2
        • 2.Qe3#
      • 1...hxg2
        • 2.Qe3#
      • 1...Qd7
        • 2.Qe3#
      • 1...Qd4
        • 2.Qh4#
      • 1...Qa7
        • 2.Qh4#
      • 1...Sce2
        • 2.Qe3#
      • 1...Sge2
        • 2.Qe3#
      • 1...d4!
  • Keys
    • 1.Kh4!
      • threat
        • 2.Sg5#
      • 1...Kf5+
        • 2.Sd4#
      • 1...Sxf3+
        • 2.Qxf3#
      • 1...g5+
        • 2.Sxg5#
      • 1...Kf4
        • 2.Sxg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);CHECK,OGATE,P_SPINS(b),XS(E)::QAB1(A),XS(b)
  • Tries
    • Try
      • S(E);CHECK,XS(b)
      • Vars
        • P(e);XB(C)::QAB1(A)
      • Refutation
        • B(c);XB(C)
    • Try
      • S(E);CHECK,XP(i)
      • Vars
        • K(g);P-FLIGHT,XS(E)::QAB1(A)
        • B(c);XB(C)::QAR1(A)
        • P(e);XB(C)::QAR1(A)
      • Refutation
        • S(b);CHECK,P_SPINS(b)
    • Try
      • B(C);XB(c)
      • Threat
        • B(C)+S(E),XS(b)
      • Refutation
        • Q(f);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);CHECK,OGATE,P_SPINS(b),XS(E)::QAB1(A),XS(b)
        • B(c);XB(C)::QAR1(A)
        • P(e);XB(C)::QAR1(A)
        • Q(f);::QAR1(A)
        • Q(f);::QAR(A)
        • S(a);::QAR1(A)
        • S(b);::QAR1(A)
      • Refutation
        • P(h);
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • B(C)+S(E),DCHECK
    • Vars
      • K(g);CHECK,S_FLIGHT::QAR(A)+S(E),DCHECK
      • S(b);CHECK,OGATE,P_SPINS(b),XS(E)::QAB1(A),XS(b)
      • P(j);CHECK::B(C)+S(E),DCHECK,XP(j)
      • K(g);P-FLIGHT::QAR(A)+S(E),XS(b)
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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).