MESON Chess Problem Database

Problem Display
PID: 54366 (8/8/6b1/1Q2p3/3Pk3/3R2K1/8/8 w - - 0 1)

Lincoln, Robert A

1st Prize, Amirov MT, 2003

8/8/6b1/1Q2p3/3Pk3/3R2K1/8/8

#2

4 + 3

145 StrateGems 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qxe5#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Qxe5#
      • 1...Kf5
        • 2.Qxe5#
      • 1...exd4
        • 2.Re1#
      • 1...Ke3!
    • 1.Rc3?
      • threat
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Qc4#
      • 1...Kf5
        • 2.Qxe5#
      • 1...exd4!
  • Keys
    • 1.Rd2!
      • threat
        • 2.Qxe5#
      • 1...Ke3
        • 2.Qe2#
      • 1...Kf5
        • 2.Qxe5#
      • 1...exd4
        • 2.Re2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
  • Tries
    • Try
      • R(A);
      • Threat
        • QAR1(D),XP(b)
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
        • P(b);SBLOCK,XP(C)::R(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Threat
        • QAR1(D),XP(b)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(C)::QAR1(D)
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
      • Refutation
        • P(b);XP(C)
  • Actual
    • R(A);
    • Threat
      • QAR1(D),XP(b)
    • Vars
      • K(a);P-FLIGHT::QAR1(D)
      • K(a);P_SPINP(b),S_FLIGHT::QAR1(D),XP(b)
      • P(b);SBLOCK,XP(C)::R(A)
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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).