MESON Chess Problem Database

Problem Display
PID: 22755 (8/B2p4/K1k1P3/4Q3/8/1n6/8/8 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

8/B2p4/K1k1P3/4Q3/8/1n6/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Qc5#
    • 1...Sc1
      • 2.Qc5#
    • 1...Sd2
      • 2.Qc5#
    • 1...Sd4
      • 2.Qc5#
    • 1...Sa5
      • 2.Qc5#
    • 1...Sc5+
      • 2.Qxc5#
  • Tries
    • 1.Bc5?
      • threat
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
      • 1...Sxc5+!
    • 1.Bb8?
      • threat
        • 2.Qd6#
        • 2.Qb5#
      • 1...d5
        • 2.Qd6#
        • 2.Qc7#
      • 1...Sd4
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
        • 2.Qb5#
      • 1...Sc5+!
    • 1.Qb5+?
      • 1...Kc7
        • 2.Qxd7#
      • 1...Kd6!
    • 1.Qd5+?
      • 1...Kc7
        • 2.Qxd7#
      • 1...Kxd5!
    • 1.e7?
      • 1...Sc5+
        • 2.Qxc5#
      • 1...d5
        • 2.e8Q#
        • 2.e8B#
      • 1...Sa1
        • 2.Qc5#
      • 1...Sc1
        • 2.Qc5#
      • 1...Sd2
        • 2.Qc5#
      • 1...Sd4
        • 2.Qc5#
      • 1...Sa5
        • 2.Qc5#
      • 1...d6!
  • Keys
    • 1.Bb6!
      • 1...Sc5+
        • 2.Qxc5#
      • 1...dxe6
        • 2.Qxe6#
      • 1...Sa1
        • 2.Qc5#
      • 1...Sc1
        • 2.Qc5#
      • 1...Sd2
        • 2.Qc5#
      • 1...Sd4
        • 2.Qc5#
      • 1...Sa5
        • 2.Qc5#
      • 1...d5
        • 2.Qc7#
      • 1...d6
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAR1(A)
    • S(a);CHECK,N_GUARD::QAR1(A),XS(a)
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR1(A)
      • Vars
        • P(c);::QAR1(A),XP(c)
      • Refutation
        • S(a);CHECK,XB(D)
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR1(A)
      • Refutation
        • S(a);CHECK
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A),XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
    • Try
      • P(C);
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(A),XS(a)
        • P(c);::P=Q
        • S(a);N_GUARD::QAR1(A)
      • Refutation
        • P(c);
  • Actual
    • B(D);
    • Vars
      • S(a);CHECK,N_GUARD::QAR1(A),XS(a)
      • P(c);OGATE,XP(C)::QAR2(A),XP(c)
      • S(a);N_GUARD::QAR1(A)
      • P(c);SBLOCK::QAR1(A)
      • P(c);SBLOCK::QAB1(A)
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