MESON Chess Problem Database

Problem Display
PID: 52094 (Q7/4Rn2/8/4nk1K/2B5/4p3/4N3/6N1 w - - 0 1)

Meredith, William

Dubuque Chess Journal, 1889

Q7/4Rn2/8/4nk1K/2B5/4p3/4N3/6N1

#2

6 + 4

5065 Chess Problem Gems by Eight Eminent American Composers 1972

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Qxf3#
    • 1...Sxc4
      • 2.Qf3#
    • 1...Sg4
      • 2.Qf3#
    • 1...Sd7
      • 2.Qf3#
  • Tries
    • 1.Sg3+?
      • 1...Kf4
        • 2.S1e2#
      • 1...Kf6!
    • 1.Sd4+?
      • 1...Kf4
        • 2.Sge2#
      • 1...Kf6!
    • 1.Qd5?
      • threat
        • 2.Rxf7#
      • 1...Sg5
        • 2.Qxe5#
      • 1...Sd6
        • 2.Qxe5#
      • 1...Sh6
        • 2.Qxe5#
      • 1...Sd8
        • 2.Qxe5#
      • 1...Sh8
        • 2.Qxe5#
      • 1...Kf6!
  • Keys
    • 1.Qa1!
      • 1...Ke4
        • 2.Qb1#
      • 1...Kf6
        • 2.Rxf7#
      • 1...Sxc4
        • 2.Qf1#
      • 1...Sd3
        • 2.Bxd3#
      • 1...Sf3
        • 2.Bd3#
      • 1...Sg4
        • 2.Bd3#
      • 1...Sc6
        • 2.Bd3#
        • 2.Qf1#
      • 1...Sg6
        • 2.Bd3#
      • 1...Sd7
        • 2.Bd3#
        • 2.Qf1#
      • 1...Sg5
        • 2.Qxe5#
      • 1...Sd6
        • 2.Qxe5#
      • 1...Sh6
        • 2.Qxe5#
      • 1...Sd8
        • 2.Qxe5#
      • 1...Sh8
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD::QAR2(F),XS(b)
    • S(b);N_GUARD,XB(C)::QAR2(F)
    • S(b);N_GUARD::QAR2(F)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(c);P-FLIGHT::S(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(c);P-FLIGHT::S(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(F);P_PINS(b)
      • Threat
        • R(E),XS(d)
      • Vars
        • S(d);N_GUARD::QAR1(F),XS(b)
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(c);P_SPINS(b),S_FLIGHT::QAB(F)
      • K(c);P-FLIGHT,P_SPINS(b)::R1(E),XS(d)
      • S(b);N_GUARD,XB(C)::QAR(F)
      • S(b);N_GUARD::B(C),XS(b)
      • S(b);N_GUARD::B(C)
      • S(d);N_GUARD::QAR1(F),XS(b)
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