MESON Chess Problem Database

Problem Display
PID: 23111 (nb6/8/k1K5/1N6/p7/2Q5/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

nb6/8/k1K5/1N6/p7/2Q5/8/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...a3
      • 2.Qxa3#
  • Tries
    • 1.Qd4?
      • threat
        • 2.Qxa4#
      • 1...Bc7
        • 2.Qa7#
      • 1...Sb6
        • 2.Qxb6#
      • 1...a3
        • 2.Qa4#
      • 1...Ka5!
    • 1.Qe3?
      • 1...Bh2
        • 2.Qa7#
      • 1...Bg3
        • 2.Qa7#
      • 1...Bf4
        • 2.Qa7#
      • 1...Be5
        • 2.Qa7#
      • 1...Bd6
        • 2.Qa7#
      • 1...Ba7
        • 2.Qxa7#
      • 1...Bc7
        • 2.Qa7#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sc7
        • 2.Qb6#
      • 1...a3
        • 2.Qxa3#
      • 1...Ka5!
  • Keys
    • 1.Qc5!
      • 1...Ka5
        • 2.Sc7#
      • 1...Bh2
        • 2.Qa7#
      • 1...Bg3
        • 2.Qa7#
      • 1...Bf4
        • 2.Qa7#
      • 1...Be5
        • 2.Qa7#
      • 1...Bd6
        • 2.Qa7#
      • 1...Ba7
        • 2.Qxa7#
      • 1...Bc7
        • 2.Qa7#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sc7
        • 2.Qb6#
      • 1...a3
        • 2.Qxa3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::QAR(A),XP(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(a)
      • Vars
        • B(d);N_GUARD::QAR1(A)
        • S(c);N_GUARD::QAR1(A),XS(c)
        • P(a);::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • B(d);N_GUARD::QAR1(A)
        • B(d);N_GUARD::QAR1(A),XB(d)
        • S(c);N_GUARD::QAR1(A),XS(c)
        • S(c);N_GUARD::QAR1(A)
        • P(a);OGATEB::QAR(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT::QAR(A)+S(B)
      • B(d);N_GUARD::QAR1(A)
      • B(d);N_GUARD::QAR1(A),XB(d)
      • S(c);N_GUARD::QAR1(A),XS(c)
      • S(c);N_GUARD::QAR1(A)
      • P(a);OGATEB::QAR(A),XP(a)
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