MESON Chess Problem Database

Problem Display
PID: 142395 (4R1qb/7B/4N1Pp/1Q6/3Bk3/1P5N/6P1/2Kb3n w - - 0 1)

Meredith, William

Chess Journal, 1874

4R1qb/7B/4N1Pp/1Q6/3Bk3/1P5N/6P1/2Kb3n

#2

10 + 6

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qf7
      • 2.gxf7#
    • 1...Qxg6
      • 2.Bxg6#
    • 1...Bxd4
      • 2.Seg5#
    • 1...Sf2
      • 2.Sxf2#
    • 1...Sg3
      • 2.Sf2#
    • 1...h5
      • 2.Shg5#
  • Tries
    • 1.Sef4+?
      • 1...Qe6
        • 2.Qd3#
        • 2.Qd5#
      • 1...Qxe8
        • 2.Qd3#
        • 2.Qd5#
      • 1...Be5
        • 2.Qd3#
        • 2.Qxe5#
      • 1...Kxd4!
    • 1.Qc6+?
      • 1...Kd3
        • 2.Shf4#
      • 1...Kf5!
    • 1.Qd5+?
      • 1...Kd3
        • 2.Shf4#
        • 2.Sef4#
        • 2.Sc5#
      • 1...Kxd5!
    • 1.Qe5+?
      • 1...Kd3
        • 2.Shf4#
        • 2.Sef4#
        • 2.Sc5#
        • 2.Qe3#
      • 1...Bxe5!
    • 1.Qb7+?
      • 1...Kd3
        • 2.Shf4#
      • 1...Kf5!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Sc5#
      • 1...Kd3
        • 2.Sef4#
        • 2.Sc5#
      • 1...Kf5
        • 2.Sg7#
      • 1...Qxe6
        • 2.g7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(e);OGATE::B(I)+P(H),XQ(e)
    • Q(e);OGATE,P_SPINQ(e),XP(H)::B(I),XQ(e)
    • B(f);SBLOCK,XB(E)::R(J)+S(G),DCHECK
    • S(b);N_GUARD::S(D),XS(b)
    • S(b);N_GUARD::S(D)
    • P(d);N_GUARD::S(D)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • K(c);P-FLIGHT,XB(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);S_FLIGHT::S(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • K(c);S_FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK
      • Refutation
        • B(f);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);S_FLIGHT::S(D)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(F);
    • Threat
      • R(J)+S(G),DCHECK
    • Vars
      • K(c);S_FLIGHT::QAB(F)+S(G),DCHECK
      • Q(e);N_GUARD,P_SPINQ(e),XS(G)::B(I)+P(H)
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