MESON Chess Problem Database

Problem Display
PID: 2333 (8/8/1p1p4/2kB1K2/8/4P3/8/1Q6 w - - 0 1)

Gardner, John Carey

Source?, 0000

8/8/1p1p4/2kB1K2/8/4P3/8/1Q6

#2

4 + 3

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qb5#
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qc4#
      • 1...b5
        • 2.Qd4#
      • 1...Kb4!
    • 1.Qe4?
      • threat
        • 2.Qc4#
      • 1...b5
        • 2.Qd4#
      • 1...Kb5!
    • 1.Qb4+?
      • 1...Kxd5
        • 2.Qb5#
      • 1...Kxb4!
    • 1.Qxb6+?
      • 1...Kxd5
        • 2.Qb5#
      • 1...Kxb6!
  • Keys
    • 1.Qb2!
      • 1...Kxd5
        • 2.Qb5#
      • 1...b5
        • 2.Qd4#

FEATURES

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