MESON Chess Problem Database

Problem Display
PID: 48087 (2K5/3p4/4k3/1N2p3/5R2/8/4Q3/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

2K5/3p4/4k3/1N2p3/5R2/8/4Q3/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qc4#
    • 1...Ke7
      • 2.Qxe5#
    • 1...e4
      • 2.Qxe4#
  • Tries
    • 1.Sc7+?
      • 1...Ke7
        • 2.Qxe5#
      • 1...Kd6!
    • 1.Qc4+?
      • 1...Ke7
        • 2.Qf7#
      • 1...d5!
    • 1.Qg4+?
      • 1...Ke7
        • 2.Qxd7#
      • 1...Kd5!
    • 1.Qa2+?
      • 1...Ke7
        • 2.Qf7#
      • 1...d5!
  • Keys
    • 1.Kd8!
      • 1...Kd5
        • 2.Qc4#
      • 1...e4
        • 2.Qxe4#
      • 1...d5
        • 2.Qg4#
      • 1...d6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(b);N_SPINP(a),S_FLIGHT::QAB1(A)
    • K(b);P-FLIGHT::QAR2(A),XP(a)
    • P(a);OGATEB::QAR2(A),XP(a)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(A),XP(a)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • K(D);P-FLIGHT
    • Vars
      • K(b);N_SPINP(a),S_FLIGHT::QAB1(A)
      • P(a);OGATEB::QAR2(A),XP(a)
      • P(c);SBLOCK::QAB(A)
      • P(c);SBLOCK::S(C)
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