MESON Chess Problem Database

Problem Display
PID: 224305 (8/4B1p1/8/R4B2/q3Q2p/1p3n2/pk2N3/r1N2R1K w - - 0 1)

Hiatt, Spencer

Brownson's Chess Journal, 1887

8/4B1p1/8/R4B2/q3Q2p/1p3n2/pk2N3/r1N2R1K

#2

8 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Ba3#
    • 1...Qc6
      • 2.Ba3#
    • 1...Qd7
      • 2.Ba3#
    • 1...Qe8
      • 2.Ba3#
    • 1...Qa3
      • 2.Bxa3#
    • 1...Qc4
      • 2.Ba3#
    • 1...Qd4
      • 2.Ba3#
  • Tries
    • 1.Qc6?
      • threat
        • 2.Sd3#
        • 2.Qc3#
      • 1...Qxc6
        • 2.Ba3#
      • 1...Qxa5
        • 2.Sd3#
      • 1...Rxc1
        • 2.Qxc1#
      • 1...Rb1
        • 2.Qc3#
      • 1...Qb5
        • 2.Ba3#
        • 2.Qc3#
      • 1...Qb4
        • 2.Sd3#
      • 1...Qc4
        • 2.Ba3#
      • 1...Qd4
        • 2.Ba3#
      • 1...Se1
        • 2.Qc3#
      • 1...Se5
        • 2.Qc3#
      • 1...Qe4!
    • 1.Qe3?
      • threat
        • 2.Qc3#
      • 1...Qxa5
        • 2.Qxb3#
      • 1...Rxc1
        • 2.Qxc1#
      • 1...Qe4
        • 2.Qxb3#
      • 1...Qc6
        • 2.Ba3#
        • 2.Qxb3#
      • 1...Qc4
        • 2.Ba3#
      • 1...Qd4
        • 2.Ba3#
        • 2.Qxb3#
      • 1...Qb4!
    • 1.Qd4+?
      • 1...Qxd4
        • 2.Ba3#
      • 1...Sxd4!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Sd3#
        • 2.Qc3#
      • 1...Qxc4
        • 2.Ba3#
      • 1...Qxa5
        • 2.Sd3#
        • 2.Qxb3#
      • 1...Rxc1
        • 2.Qxc1#
      • 1...Rb1
        • 2.Qc3#
      • 1...Qb4
        • 2.Sd3#
      • 1...Qc6
        • 2.Sd3#
        • 2.Ba3#
        • 2.Qxb3#
      • 1...Qd7
        • 2.Ba3#
        • 2.Qxb3#
        • 2.Qc3#
      • 1...Se1
        • 2.Qc3#
      • 1...Se5
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • Q(f);N_GUARD::B(H)
    • Q(f);N_GUARD::B(H),XQ(f)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);N_GUARD,XQ(E)::B(H)
        • Q(f);XR(F)::S(A)
        • R(a);OGATE,P_PINR(B),XS(A)::QAB1(E),XR(a)
        • R(a);::QAB1(E)
        • Q(f);::S(A)
        • Q(f);N_GUARD::B(H)
        • S(e);::QAB1(E)
      • Refutation
        • Q(f);
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • Q(f);N_GUARD,XR(F)::QAR1(E),XP(d)
        • R(a);OGATE,P_PINR(B),XS(A)::QAB1(E),XR(a)
        • Q(f);N_GUARD::QAR1(E),XP(d)
        • Q(f);N_GUARD::B(H)
      • Refutation
        • Q(f);
    • Try
      • Q(E);CHECK
      • Vars
        • Q(f);XQ(E)::B(H)
      • Refutation
        • S(e);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • DUALS(2)
    • Vars
      • Q(f);N_GUARD,XQ(E)::B(H)
      • R(a);OGATE,P_PINR(B),XS(A)::QAB1(E),XR(a)
      • R(a);::QAB1(E)
      • Q(f);::S(A)
      • S(e);::QAB1(E)
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