MESON Chess Problem Database

Problem Display
PID: 39733 (5K2/6p1/4k3/1Q5R/1n6/3p4/8/8 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

5K2/6p1/4k3/1Q5R/1n6/3p4/8/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qf5#
    • 1...Sa2
      • 2.Qc6#
    • 1...Sc2
      • 2.Qc6#
    • 1...Sd5
      • 2.Qc6#
    • 1...Sa6
      • 2.Qc6#
    • 1...Sc6
      • 2.Qxc6#
    • 1...g5
      • 2.Rh6#
  • Tries
    • 1.Rg5?
      • threat
        • 2.Rg6#
      • 1...Kf6
        • 2.Qe5#
        • 2.Qf5#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sd5
        • 2.Qc6#
      • 1...g6
        • 2.Rxg6#
      • 1...Kd6!
    • 1.Rh6+?
      • 1...g6
        • 2.Rxg6#
      • 1...gxh6!
    • 1.Qd7+?
      • 1...Kf6
        • 2.Qf5#
        • 2.Qd6#
        • 2.Qf7#
      • 1...Kxd7!
    • 1.Qe8+?
      • 1...Kf6
        • 2.Qf7#
      • 1...Kd6!
    • 1.Qd5+?
      • 1...Kf6
        • 2.Qf7#
        • 2.Qf5#
        • 2.Qd6#
      • 1...Sxd5!
    • 1.Qb6+?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Kd7!
  • Keys
    • 1.Ke8!
      • threat
        • 2.Qe5#
      • 1...Kd6
        • 2.Qd7#
      • 1...Kf6
        • 2.Qf5#
      • 1...Sd5
        • 2.Qc6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...g5
        • 2.Rh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(c);P-FLIGHT::QAR1(A)
    • S(b);N_GUARD::QAR2(A)
    • S(b);N_GUARD::QAR2(A),XS(b)
    • P(d);N_GUARD::R(B)
  • Tries
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • S(b);N_GUARD::QAR2(A),XS(b)
        • S(b);N_GUARD::QAR2(A)
        • P(d);::R(B),XP(d)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • P(d);P_SPINP(d)::R(B),XP(d)
      • Refutation
        • P(d);XR(B)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • S(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR2(A),XS(b)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • K(C);P-FLIGHT
    • Threat
      • QAR1(A)
    • Vars
      • K(c);P-FLIGHT::QAR1(A)
      • S(b);N_GUARD::QAR2(A)
      • S(b);N_GUARD::QAR2(A),XS(b)
      • P(d);N_GUARD::R(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).