MESON Chess Problem Database

Problem Display
PID: 48091 (8/2N1p3/8/6Q1/1n2k3/2R5/6K1/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

8/2N1p3/8/6Q1/1n2k3/2R5/6K1/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qe3#
    • 1...Sd3
      • 2.Rc4#
    • 1...e5
      • 2.Qg4#
  • Tries
    • 1.Rf3?
      • threat
        • 2.Qe3#
        • 2.Qf4#
      • 1...Sc2
        • 2.Qf4#
        • 2.Qd5#
      • 1...Sd3
        • 2.Qe3#
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...e5
        • 2.Qe3#
        • 2.Qh4#
        • 2.Qg4#
      • 1...Kd4!
    • 1.Qf5+?
      • 1...Kd4
        • 2.Sb5#
      • 1...Kxf5!
  • Keys
    • 1.Kg3!
      • threat
        • 2.Qf4#
      • 1...Kd4
        • 2.Qe3#
      • 1...Sd3
        • 2.Rc4#
      • 1...Sd5
        • 2.Qxd5#
      • 1...e5
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAB1(C)
    • S(a);SBLOCK::R(B)
    • P(c);SBLOCK::QAR2(C)
  • Tries
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::S(D)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • K(A);P-FLIGHT
    • Threat
      • QAR1(C)
    • Vars
      • K(b);P-FLIGHT::QAB1(C)
      • S(a);SBLOCK::R(B)
      • S(a);N_GUARD::QAB1(C),XS(a)
      • P(c);SBLOCK::QAR2(C)
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