MESON Chess Problem Database

Problem Display
PID: 121004 (2K5/1N6/8/1k6/8/8/2B5/7Q w - - 0 1)

Anonymous

Source?, 0000

2K5/1N6/8/1k6/8/8/2B5/7Q

#2

4 + 1

3713 Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qd5+?
      • 1...Kb4
        • 2.Qb3#
        • 2.Qc5#
      • 1...Ka6
        • 2.Qa5#
      • 1...Kb6!
    • 1.Qc6+?
      • 1...Kb4
        • 2.Qc5#
      • 1...Kxc6!
    • 1.Qh5+?
      • 1...Kb4
        • 2.Qc5#
      • 1...Kc4
        • 2.Qc5#
      • 1...Ka6
        • 2.Qa5#
      • 1...Kc6
        • 2.Qc5#
      • 1...Kb6!
  • Keys
    • 1.Qg1!
      • 1...Kb4
        • 2.Qc5#
      • 1...Kc4
        • 2.Qc5#
      • 1...Ka6
        • 2.Bd3#
      • 1...Kc6
        • 2.Qc5#

This anticipates 4528(1875)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::B(B)
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