MESON Chess Problem Database

Problem Display
PID: 2562 (8/2Q5/2K5/2pp4/2k5/3p4/3P4/8 w - - 0 1)

Moore, Charles C

Source?, 0000

8/2Q5/2K5/2pp4/2k5/3p4/3P4/8

#2

3 + 4

1679 American Chess Nuts 1868
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qf4#
  • Tries
    • 1.Qb6?
      • 1...d4
        • 2.Qb5#
      • 1...Kd4!
    • 1.Qb7?
      • 1...d4
        • 2.Qb5#
      • 1...Kd4!
  • Keys
    • 1.Qb8!
      • 1...Kd4
        • 2.Qf4#
      • 1...d4
        • 2.Qb5#

This anticipates 23602(1879), 91942(1883), 4790(1891), 135915(1897), 206689(1925), 231572(1927), 231573(1927), 90303(1930)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • Q(C);
      • Vars
        • P(d);SBLOCK::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(C);
      • Vars
        • P(d);SBLOCK::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(b);P-FLIGHT::QAR2(C)
      • P(d);SBLOCK::QAB1(C)
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