MESON Chess Problem Database

Problem Display
PID: 151756 (8/8/6p1/1PpN2Rp/K1kp3p/2Pp3Q/8/8 w - - 0 1)

Lincoln, Robert A

The Problemist Supplement, 2014

8/8/6p1/1PpN2Rp/K1kp3p/2Pp3Q/8/8

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...d2
      • 2.Sb6#
    • 1...dxc3
      • 2.Qxh4#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Qxd3#
      • 1...cxb4
        • 2.Qc8#
      • 1...d2
        • 2.Qd3#
      • 1...Kxc3!
    • 1.Sf4?
      • threat
        • 2.Qxd3#
      • 1...d2
        • 2.Qd3#
      • 1...Kxc3!
    • 1.Re5?
      • 1...dxc3
        • 2.Qxh4#
      • 1...d2
        • 2.Sb6#
      • 1...g5!
    • 1.Rxg6?
      • 1...Kxd5
        • 2.Qe6#
      • 1...d2
        • 2.Sb6#
      • 1...dxc3!
    • 1.Qf1?
      • 1...dxc3
        • 2.Qf4#
      • 1...h3!
    • 1.Qg2?
      • threat
        • 2.Qa2#
      • 1...dxc3
        • 2.Qe4#
      • 1...d2!
    • 1.Qh2?
      • threat
        • 2.Qa2#
      • 1...dxc3
        • 2.Qf4#
        • 2.Qxh4#
      • 1...d2!
    • 1.Qf3?
      • 1...dxc3
        • 2.Qe4#
        • 2.Qf4#
      • 1...d2
        • 2.Sb6#
      • 1...h3!
    • 1.b6?
      • 1...dxc3
        • 2.Qxh4#
      • 1...d2!
  • Keys
    • 1.cxd4!
      • 1...Kxd4
        • 2.Qxh4#
      • 1...cxd4
        • 2.Qc8#
      • 1...d2
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(a);::S(E)
    • P(c);OGATEB,XP(A)::QAR(B),XP(d)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(B),XP(a)
      • Vars
        • P(e);OGATEB,XS(E)::QAR(B)
        • P(a);::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a),XP(A)
    • Try
      • S(E);
      • Threat
        • QAB1(B),XP(a)
      • Vars
        • P(a);::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a),XP(A)
    • Try
      • R(F);
      • Vars
        • P(c);OGATEB,XP(A)::QAR(B),XP(d)
        • P(a);::S(E)
      • Refutation
        • P(g);
    • Try
      • R(F);XP(g)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(E)::QAB1(B)
        • P(a);::S(E)
      • Refutation
        • P(c);XP(A)
    • Try
      • Q(B);P_PINP(a)
      • Vars
        • P(c);OGATEB,XP(A)::QAR(B)
      • Refutation
        • P(d);
    • Try
      • Q(B);
      • Threat
        • QAB(B)
      • Vars
        • P(c);OGATEB,XP(A)::QAR2(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);
      • Threat
        • QAB(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);
      • Vars
        • P(a);::S(E)
      • Refutation
        • P(d);
    • Try
      • P(D);
      • Vars
        • P(c);OGATEB,XP(A)::QAR(B),XP(d)
      • Refutation
        • P(a);
  • Actual
    • P(A);XP(c)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(A)::QAR(B),XP(d)
      • P(e);OGATEB,SBLOCK,XP(A)::QAR(B)
      • P(a);OGATE::QAR1(B)
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).