MESON Chess Problem Database

Problem Display
PID: 4503 (8/8/8/4r3/4p3/3kN2Q/4N3/4K3 w - - 0 1)

Carpenter, George Edward

Dubuque Chess Journal, 1872

8/8/8/4r3/4p3/3kN2Q/4N3/4K3

#2

4 + 3

8326 Schachminiaturen 1902
3757 Schachminiaturen I 1902
81 Chess 1960
5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qd7+?
      • 1...Kxe3
        • 2.Qh3#
      • 1...Rd5!
    • 1.Qc8?
      • threat
        • 2.Qc3#
      • 1...Kxe3
        • 2.Qh3#
        • 2.Qc3#
      • 1...Rc5!
  • Keys
    • 1.Qh8!
      • 1...Kxe3
        • 2.Qh3#
      • 1...Ra5
        • 2.Qc3#
        • 2.Qd4#
      • 1...Rb5
        • 2.Qc3#
        • 2.Qd4#
      • 1...Rc5
        • 2.Qd4#
      • 1...Rd5
        • 2.Qc3#
      • 1...Rf5
        • 2.Qc3#
        • 2.Qd4#
      • 1...Rg5
        • 2.Qc3#
        • 2.Qd4#
      • 1...Rh5
        • 2.Qc3#
        • 2.Qd4#
      • 1...Re6
        • 2.Qc3#
        • 2.Qd4#
      • 1...Re7
        • 2.Qc3#
        • 2.Qd4#
      • 1...Re8
        • 2.Qc3#
        • 2.Qd4#

This anticipates 79537(1872)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(C)::QAR(D)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Refutation
        • R(c);
  • Actual
    • Q(D);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XS(C)::QAR(D)
      • R(c);OGATE::QAR1(D)
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