MESON Chess Problem Database

Problem Display
PID: 39344 (8/K3R3/2k5/7Q/8/Bn6/6b1/8 w - - 0 1)

Lincoln, Robert A

The Problemist, 1996

8/K3R3/2k5/7Q/8/Bn6/6b1/8

#2

4 + 3

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qe8#
    • 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.Ka6?
      • threat
        • 2.Qb5#
      • 1...Sc5+
        • 2.Qxc5#
      • 1...Bd5
        • 2.Qe8#
      • 1...Sd4
        • 2.Qc5#
      • 1...Bf1+!
    • 1.Qg6+?
      • 1...Kb5
        • 2.Qa6#
      • 1...Kd5!
    • 1.Qa5?
      • threat
        • 2.Rc7#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sxa5!
    • 1.Qe5?
      • threat
        • 2.Rc7#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Bd5!
    • 1.Qf5?
      • threat
        • 2.Qd7#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Bh3!
    • 1.Qh6+?
      • 1...Kb5
        • 2.Qa6#
      • 1...Kd5!
  • Keys
    • 1.Rb7!
      • threat
        • 2.Qb5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Bf1
        • 2.Qf3#
      • 1...Bd5
        • 2.Qe8#
      • 1...Sd4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(a);SBLOCK::QAB(B)
    • S(b);N_GUARD::QAR1(B)
    • S(b);N_GUARD::QAR1(B),XS(b)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • QAB1(B)
      • Vars
        • S(b);CHECK,N_GUARD::QAR1(B),XS(b)
        • B(a);SBLOCK::QAB(B)
        • S(b);N_GUARD::QAR1(B)
      • Refutation
        • B(a);CHECK
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • R1(D)
      • Vars
        • S(b);N_GUARD::QAR1(B),XS(b)
      • Refutation
        • S(b);XQ(B)
    • Try
      • Q(B);
      • Threat
        • R1(D)
      • Vars
        • S(b);N_GUARD::QAR1(B),XS(b)
      • Refutation
        • B(a);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • S(b);N_GUARD::QAR1(B),XS(b)
      • Refutation
        • B(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • QAB1(B)
    • Vars
      • S(b);N_GUARD::QAR1(B),XS(b)
      • B(a);N_GUARD::QAB(B)
      • B(a);SBLOCK::QAB(B)
      • S(b);N_GUARD::QAR1(B)
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