MESON Chess Problem Database

Problem Display
PID: 1955 (8/8/7Q/1P6/2k1B3/2B5/8/4K3 w - - 0 1)

Loyd, Sam

New York Musical World, 1859

8/8/7Q/1P6/2k1B3/2B5/8/4K3

#2

5 + 1

1679 American Chess Nuts 1868
5206 Sam Loyd and His Chess Problems 1913
3295 Einfuhrung in die Welt des Schachproblem 1984
15 British Chess Magazine 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb5
      • 2.Qc6#
    • 1...Kc5
      • 2.Qc6#
  • Tries
    • 1.Kd2?
      • 1...Kxb5
        • 2.Qc6#
      • 1...Kc5
        • 2.Qc6#
      • 1...Kb3!
    • 1.Qe6+?
      • 1...Kxb5
        • 2.Qc6#
      • 1...Kc5
        • 2.Qc6#
      • 1...Kxc3!
    • 1.Qf6?
      • 1...Kxb5
        • 2.Qc6#
      • 1...Kc5
        • 2.Qc6#
      • 1...Kb3!
  • Keys
    • 1.Bd5+!
      • 1...Kxc3
        • 2.Qd2#
      • 1...Kd3
        • 2.Qd2#
      • 1...Kxb5
        • 2.Qc6#
      • 1...Kc5
        • 2.Qc6#
      • 1...Kxd5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT,XP(D)::QAB1(E)
    • K(a);P-FLIGHT::QAR1(E)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT,XP(D)::QAB1(E)
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT,XP(D)::QAB1(E)
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT,XP(D)::QAB1(E)
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(C);CHECK
    • Vars
      • K(a);P-FLIGHT,XB(B)::QAB1(E)
      • K(a);S_FLIGHT::QAR1(E)
      • K(a);S_FLIGHT,XP(D)::QAB1(E)
      • K(a);P-FLIGHT::QAR1(E)
      • K(a);S_FLIGHT,XB(C)::QAB1(E)
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