MESON Chess Problem Database

Problem Display
PID: 23149 (1K6/3p2R1/4k1n1/7Q/3P4/8/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

1K6/3p2R1/4k1n1/7Q/3P4/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qxg6#
    • 1...Sf4
      • 2.Qe5#
    • 1...Sh4
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Se7
      • 2.Qe5#
    • 1...Sf8
      • 2.Qe5#
    • 1...Sh8
      • 2.Qe5#
    • 1...d5
      • 2.Qxg6#
  • Tries
    • 1.Kc7?
      • 1...Kf6
        • 2.Qxg6#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sf4
        • 2.Qf7#
        • 2.Qe5#
      • 1...Sh4
        • 2.Qf7#
        • 2.Qe5#
      • 1...Se7
        • 2.Qf7#
        • 2.Qe5#
      • 1...Sf8
        • 2.Qf7#
        • 2.Qe5#
      • 1...Sh8
        • 2.Qe5#
      • 1...d5
        • 2.Qxg6#
      • 1...d6!
    • 1.Qg4+?
      • 1...Kd6
        • 2.Qxd7#
      • 1...Kf6
        • 2.Qxg6#
      • 1...Kd5!
    • 1.Qd5+?
      • 1...Kf6
        • 2.Rf7#
      • 1...Kxd5!
    • 1.Qf5+?
      • 1...Kd6
        • 2.Qxd7#
      • 1...Kxf5!
  • Keys
    • 1.Qg5!
      • 1...Kd6
        • 2.Rxg6#
      • 1...Se5
        • 2.Qxe5#
      • 1...d6
        • 2.d5#
      • 1...Sf4
        • 2.Qe5#
      • 1...Sh4
        • 2.Qe5#
      • 1...Se7
        • 2.Qe5#
      • 1...Sf8
        • 2.Qe5#
      • 1...Sh8
        • 2.Qe5#
      • 1...d5
        • 2.Qxg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::QAR1(B),XS(b)
    • S(b);N_GUARD::QAR1(B)
    • S(b);N_GUARD::QAR1(B),XS(b)
    • P(c);SBLOCK::QAR2(B),XS(b)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR1(B),XS(b)
        • S(b);N_GUARD::QAR1(B),XS(b)
        • S(b);N_GUARD::QAR1(B)
        • P(c);SBLOCK::QAR2(B),XS(b)
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(B),XP(c)
        • K(a);P-FLIGHT::QAR1(B),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::R1(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(B),XP(c)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::R(C),XS(b)
      • S(b);N_GUARD::QAR1(B),XS(b)
      • P(c);SBLOCK::P(A)
      • S(b);N_GUARD::QAR1(B)
      • P(c);SBLOCK::QAR2(B),XS(b)
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