MESON Chess Problem Database

Problem Display
PID: 208020 (2R3b1/7n/nQ6/3Nk3/4N1P1/2P5/8/4K3 w - - 0 1)

Meredith, William

Dubuque Chess Journal, 1873

2R3b1/7n/nQ6/3Nk3/4N1P1/2P5/8/4K3

#2

7 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Qd4#
  • Tries
    • 1.Re8+?
      • 1...Be6
        • 2.Qd4#
        • 2.Qxe6#
      • 1...Kxd5!
    • 1.Qf6+?
      • 1...Kxe4
        • 2.Qf5#
      • 1...Kxd5
        • 2.Qf5#
      • 1...Sxf6!
    • 1.Qg6?
      • threat
        • 2.Qf5#
      • 1...Kxd5
        • 2.Qf5#
      • 1...Be6!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qf5#
      • 1...Kxe4
        • 2.Qf5#
      • 1...Kxd5
        • 2.Qf5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Be6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(d);SBLOCK::QAB1(F)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(C)::QAB1(F)
        • K(a);P-FLIGHT,XS(E)::QAR2(F)
      • Refutation
        • S(c);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(a);P-FLIGHT,XS(E)::QAR2(F)
      • Refutation
        • B(d);
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(a);P-FLIGHT,XS(C)::QAB1(F)
      • K(a);P-FLIGHT,XS(E)::QAR2(F)
      • K(a);P-FLIGHT::QAB1(F)
      • B(d);SBLOCK::QAB1(F)
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