MESON Chess Problem Database

Problem Display
PID: 9310 (8/4KR2/4p3/1N6/2b1kB2/3R4/4np2/Q3n3 w - - 0 1)

Meredith, William

Dubuque Chess Journal, 1873

8/4KR2/4p3/1N6/2b1kB2/3R4/4np2/Q3n3

#2

6 + 6

5063 Spectacular Chess Problems 1965
3310 2345 Chess Problems 1997
23 Die Schwalbe 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd3
      • 2.Qa8#
    • 1...Bd5
      • 2.Re3#
    • 1...Sxd3
      • 2.Qh1#
    • 1...Sc1
      • 2.Qd4#
    • 1...Sg1
      • 2.Qd4#
    • 1...Sg3
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sxf4
      • 2.Qd4#
  • Tries
    • 1.Qg7?
      • threat
        • 2.Qg6#
        • 2.Qh7#
      • 1...Kxd3
        • 2.Qg6#
        • 2.Qh7#
      • 1...Sxd3
        • 2.Qg2#
      • 1...Sxf4
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Bxd3!
    • 1.Qa8+?
      • 1...Bd5
        • 2.Re3#
      • 1...Kxd3!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qh7#
      • 1...Kxd3
        • 2.Qh7#
      • 1...Bxd3
        • 2.Qa8#
      • 1...Sxd3
        • 2.Qh1#
      • 1...Sxf4
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sg3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(d);N_GUARD,SBLOCK,XR(B)::QAB(A)
    • B(d);SBLOCK::R1(B)
    • S(a);OGATE,SBLOCK,XR(B)::QAB(A)
    • S(b);N_GUARD::QAR1(A)
    • S(b);N_GUARD::QAR1(A),XS(b)
    • S(b);N_GUARD,XB(C)::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD,SBLOCK,XR(B)::QAB(A)
        • S(b);N_GUARD,XB(C)::QAR1(A)
        • S(b);N_GUARD::QAR1(A),XS(b)
        • S(b);N_GUARD::QAR1(A)
      • Refutation
        • B(d);XR(B)
    • Try
      • Q(A);CHECK
      • Vars
        • B(d);P_SPINB(d)::R1(B)
      • Refutation
        • K(e);S_FLIGHT,XR(B)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • K(e);S_FLIGHT,XR(B)::QAB(A)
      • B(d);N_GUARD,SBLOCK,XR(B)::QAB(A)
      • S(a);N_GUARD,SBLOCK,XR(B)::QAB(A)
      • S(b);N_GUARD,XB(C)::QAR1(A)
      • S(b);N_GUARD::QAR1(A),XS(b)
      • S(b);N_GUARD::QAR1(A)
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