MESON Chess Problem Database

Problem Display
PID: 48027 (r1n1k3/1N4K1/8/3P4/6Q1/8/8/8 w q - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

r1n1k3/1N4K1/8/3P4/6Q1/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ke7
      • 2.Qe6#
    • 1...Sb6
      • 2.Qe6#
    • 1...Sd6
      • 2.Qe6#
    • 1...Sa7
      • 2.Qe6#
  • Tries
    • 1.Qf5?
      • threat
        • 2.Qf7#
      • 1...Ke7
        • 2.Qe6#
        • 2.Qf7#
      • 1...Sd6
        • 2.Qe6#
      • 1...Se7!
    • 1.Qh5+?
      • 1...Ke7
        • 2.Qf7#
      • 1...Kd7!
    • 1.Qxc8+?
      • 1...Ke7
        • 2.Qe6#
        • 2.d6#
      • 1...Rxc8!
    • 1.Qg6+?
      • 1...Ke7
        • 2.Qf7#
        • 2.Qe6#
      • 1...Kd7!
  • Keys
    • 1.d6!
      • 1...Sxd6
        • 2.Qe6#
      • 1...Se7
        • 2.d7#
      • 1...Ra1
        • 2.Qxc8#
      • 1...Ra2
        • 2.Qxc8#
      • 1...Ra3
        • 2.Qxc8#
      • 1...Ra4
        • 2.Qxc8#
        • 2.Qxa4#
      • 1...Ra5
        • 2.Qxc8#
      • 1...Ra6
        • 2.Qxc8#
      • 1...Ra7
        • 2.Qxc8#
      • 1...Rb8
        • 2.Qa4#
      • 1...Sb6
        • 2.Qe6#
      • 1...Sa7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT::QAR1(A)
    • S(b);N_GUARD::QAR2(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(b);N_GUARD::QAR2(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK,XS(b)
      • Refutation
        • R(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • P(B);
    • Vars
      • S(b);N_GUARD,XP(B)::QAR2(A)
      • S(b);SBLOCK::P(B)
      • R(a);N_GUARD::QAR2(A),XS(b)
      • R(a);N_GUARD,P_PINS(C)::QAR2(A),XS(b)
      • R(a);N_GUARD::QAB(A)
      • S(b);N_GUARD::QAR2(A)
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