MESON Chess Problem Database

Problem Display
PID: 48028 (8/8/8/8/5K1p/4Q3/3RN3/5k1r w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

8/8/8/8/5K1p/4Q3/3RN3/5k1r

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ke1
      • 2.Sg3#
    • 1...Rg1
      • 2.Qxg1#
    • 1...Rh2
      • 2.Qg1#
    • 1...Rh3
      • 2.Qg1#
    • 1...h3
      • 2.Sg3#
  • Tries
    • 1.Kf3?
      • threat
        • 2.Rd1#
        • 2.Qf2#
      • 1...Ke1
        • 2.Sg3#
      • 1...Rh2
        • 2.Rd1#
        • 2.Qg1#
      • 1...Rh3+!
    • 1.Ke4?
      • 1...Ke1
        • 2.Sg3#
      • 1...Rg1
        • 2.Qxg1#
      • 1...Rh2
        • 2.Qg1#
      • 1...Rh3
        • 2.Qg1#
      • 1...h3
        • 2.Sg3#
      • 1...Kg2!
    • 1.Ke5?
      • 1...Ke1
        • 2.Sg3#
      • 1...Rg1
        • 2.Qxg1#
      • 1...Rh2
        • 2.Qg1#
      • 1...Rh3
        • 2.Qg1#
      • 1...h3
        • 2.Sg3#
      • 1...Kg2!
    • 1.Kf5?
      • 1...Ke1
        • 2.Sg3#
      • 1...Rg1
        • 2.Qxg1#
      • 1...Rh2
        • 2.Qg1#
      • 1...Rh3
        • 2.Qg1#
      • 1...h3
        • 2.Sg3#
      • 1...Kg2!
    • 1.Kg5?
      • 1...Rg1+
        • 2.Qxg1#
      • 1...Ke1
        • 2.Sg3#
      • 1...Rh2
        • 2.Qg1#
      • 1...Rh3
        • 2.Qg1#
      • 1...h3
        • 2.Sg3#
      • 1...Kg2!
    • 1.Ra2?
      • 1...Ke1
        • 2.Ra1#
      • 1...Rh2
        • 2.Qg1#
      • 1...Rg1
        • 2.Qxg1#
      • 1...Rh3
        • 2.Qg1#
      • 1...h3
        • 2.Sg3#
      • 1...Kg2!
    • 1.Rb2?
      • 1...Ke1
        • 2.Rb1#
      • 1...Rh2
        • 2.Qg1#
      • 1...Rg1
        • 2.Qxg1#
      • 1...Rh3
        • 2.Qg1#
      • 1...h3
        • 2.Sg3#
      • 1...Kg2!
    • 1.Rc2?
      • 1...Ke1
        • 2.Rc1#
      • 1...Rh2
        • 2.Qg1#
      • 1...Rg1
        • 2.Qxg1#
      • 1...Rh3
        • 2.Qg1#
      • 1...h3
        • 2.Sg3#
      • 1...Kg2!
  • Keys
    • 1.Kg4!
      • 1...Rg1+
        • 2.Qxg1#
      • 1...Ke1
        • 2.Sg3#
      • 1...Kg2
        • 2.Sg3#
      • 1...Rh2
        • 2.Qg1#
      • 1...Rh3
        • 2.Qg1#
      • 1...h3
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR(C)+S(B)
    • R(b);N_GUARD::QAR1(C),XR(b)
    • R(b);N_GUARD::QAR1(C)
    • P(c);N_GUARD::S(B)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR(C)+S(B)
      • Refutation
        • R(b);CHECK
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR(C)+S(B)
        • R(b);N_GUARD::QAR1(C),XR(b)
        • R(b);N_GUARD::QAR1(C)
        • P(c);N_GUARD::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR(C)+S(B)
        • R(b);N_GUARD::QAR1(C),XR(b)
        • R(b);N_GUARD::QAR1(C)
        • P(c);N_GUARD::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR(C)+S(B)
        • R(b);N_GUARD::QAR1(C),XR(b)
        • R(b);N_GUARD::QAR1(C)
        • P(c);N_GUARD::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • R(b);CHECK,N_GUARD::QAR1(C),XR(b)
        • K(a);P-FLIGHT::QAR(C)+S(B)
        • R(b);N_GUARD::QAR1(C)
        • P(c);N_GUARD::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
        • R(b);N_GUARD::QAR1(C)
        • R(b);N_GUARD::QAR1(C),XR(b)
        • P(c);N_GUARD::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
        • R(b);N_GUARD::QAR1(C)
        • R(b);N_GUARD::QAR1(C),XR(b)
        • P(c);N_GUARD::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
        • R(b);N_GUARD::QAR1(C)
        • R(b);N_GUARD::QAR1(C),XR(b)
        • P(c);N_GUARD::S(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(D);P-FLIGHT
    • Vars
      • R(b);CHECK,N_GUARD::QAR1(C),XR(b)
      • K(a);P-FLIGHT::QAR(C)+S(B)
      • K(a);S_FLIGHT::R(A)+S(B)
      • R(b);N_GUARD::QAR1(C)
      • P(c);N_GUARD::S(B)
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