MESON Chess Problem Database

Problem Display
PID: 143634 (nn6/3Rp3/BPk5/8/2NP4/7b/8/K5Q1 w - - 0 1)

Walcott, George H

Source?, 0000

nn6/3Rp3/BPk5/8/2NP4/7b/8/K5Q1

#2

7 + 5

15 British Chess Magazine 1896

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd7
      • 2.Qh1#
      • 2.Qg2#
    • 1...Sxb6
      • 2.Se5#
    • 1...e5
      • 2.Rd6#
    • 1...e6
      • 2.Rd6#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Se5#
        • 2.Bb5#
        • 2.Qb5#
      • 1...Bxd7
        • 2.Qe4#
        • 2.Qh1#
        • 2.Qb5#
      • 1...Sxa6
        • 2.Se5#
      • 1...Sxd7
        • 2.Qe4#
        • 2.Qb5#
      • 1...Sc7
        • 2.Se5#
      • 1...e5
        • 2.Sxe5#
        • 2.Bb5#
        • 2.Rd6#
        • 2.Qb5#
      • 1...Kxd7!
    • 1.Qg6+?
      • 1...Be6
        • 2.Qxe6#
      • 1...e6
        • 2.Rd6#
      • 1...Kxd7!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qd5#
      • 1...Kxd7
        • 2.Qc8#
      • 1...Bxd7
        • 2.Qg2#
      • 1...Sxb6
        • 2.Se5#
      • 1...Sxd7
        • 2.Qxa8#
      • 1...Bg2
        • 2.Qe6#
      • 1...Be6
        • 2.Qxe6#
      • 1...Sc7
        • 2.Rxc7#
      • 1...e6
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • S(d);SBLOCK,XP(F)::S(C)
    • P(c);N_GUARD::R1(G)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • S(e);XB(E)::S(C)
        • S(d);::S(C)
      • Refutation
        • K(b);S_FLIGHT,XR(G)
    • Try
      • Q(B);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR2(B),XB(a)
        • P(c);N_GUARD,P_SPINP(c)::R1(G)
      • Refutation
        • K(b);S_FLIGHT,XR(G)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(b);S_FLIGHT,XR(G)::QAB1(B)
      • B(a);N_GUARD,SBLOCK,XR(G)::QAB(B)
      • S(d);SBLOCK,XP(F)::S(C)
      • S(e);OGATE,SBLOCK,XR(G)::QAB(B),XS(d)
      • B(a);N_GUARD::QAR2(B)
      • B(a);N_GUARD::QAR2(B),XB(a)
      • S(d);N_GUARD::R1(G),XS(d)
      • P(c);N_GUARD::R1(G)
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