MESON Chess Problem Database

Problem Display
PID: 48100 (8/n3B3/K7/3p4/k7/6Q1/r7/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

8/n3B3/K7/3p4/k7/6Q1/r7/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Qa3#
    • 1...Rc2
      • 2.Qa3#
    • 1...Rd2
      • 2.Qa3#
    • 1...Re2
      • 2.Qa3#
    • 1...Rf2
      • 2.Qa3#
    • 1...Rg2
      • 2.Qa3#
    • 1...Rh2
      • 2.Qa3#
    • 1...Ra3
      • 2.Qxa3#
  • Tries
    • 1.Qb8?
      • threat
        • 2.Qb4#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Sc6
        • 2.Qb5#
      • 1...Rb2!
    • 1.Qc3?
      • threat
        • 2.Qb4#
      • 1...Rb2
        • 2.Qa3#
      • 1...Sc6!
  • Keys
    • 1.Qd3!
      • 1...Ra1
        • 2.Qc2#
      • 1...Rb2
        • 2.Qa3#
      • 1...Rc2
        • 2.Qxc2#
        • 2.Qa3#
      • 1...Rd2
        • 2.Qa3#
      • 1...Re2
        • 2.Qa3#
      • 1...Rf2
        • 2.Qa3#
      • 1...Rg2
        • 2.Qa3#
      • 1...Rh2
        • 2.Qa3#
      • 1...Ra3
        • 2.Qxa3#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Sc6
        • 2.Qb5#
      • 1...Sc8
        • 2.Qb5#
      • 1...d4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(a);N_GUARD::QAR1(A)
    • R(a);N_GUARD,SBLOCK::QAR1(A)
    • R(a);N_GUARD::QAR1(A),XR(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • S(d);N_GUARD::QAB1(A),XS(d)
        • S(d);N_GUARD::QAB1(A)
      • Refutation
        • R(a);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • R(a);N_GUARD::QAR1(A)
      • Refutation
        • S(d);
  • Actual
    • Q(A);
    • Vars
      • R(a);N_GUARD::QAB(A)
      • R(a);N_GUARD::QAR1(A)
      • R(a);N_GUARD,SBLOCK::QAR1(A)
      • R(a);N_GUARD::QAR1(A),XR(a)
      • S(d);N_GUARD::QAB1(A),XS(d)
      • S(d);N_GUARD::QAB1(A)
      • P(c);N_GUARD::QAR2(A)
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