MESON Chess Problem Database

Problem Display
PID: 91942 (8/8/8/8/3pp3/3k4/8/2QK4 w - - 0 1)

L'Hermet, Johann Georg Rudolf

Deutsche Schachzeitung, 1883

8/8/8/8/3pp3/3k4/8/2QK4

#2

2 + 3

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qc2#
  • Tries
    • 1.Qc5?
      • 1...e3
        • 2.Qc2#
      • 1...Ke3!
    • 1.Qc6?
      • 1...e3
        • 2.Qc2#
      • 1...Ke3!
    • 1.Qc8?
      • 1...e3
        • 2.Qc2#
      • 1...Ke3!
  • Keys
    • 1.Qc7!
      • 1...Ke3
        • 2.Qg3#
      • 1...e3
        • 2.Qc2#

Anticipated by 2562(0000), 23602(1879)

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

FEATURES

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