MESON Chess Problem Database

Problem Display
PID: 4506 (8/2N5/2k5/K7/8/6BQ/8/8 w - - 0 1)

Thompson, Theophilus Augustus

Chess Problems by Theophilus A. Thompson, 1873

8/2N5/2k5/K7/8/6BQ/8/8

#2

4 + 1

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bh2?
      • 1...Kc5
        • 2.Qc3#
      • 1...Kb7!
    • 1.Bf4?
      • 1...Kc5
        • 2.Qc3#
      • 1...Kb7!
    • 1.Be5?
      • 1...Kc5
        • 2.Qc3#
      • 1...Kb7!
    • 1.Qg2+?
      • 1...Kc5
        • 2.Qd5#
      • 1...Kd7!
    • 1.Qe6+?
      • 1...Kc5
        • 2.Bf2#
        • 2.Qd5#
      • 1...Kb7!
    • 1.Qh1+?
      • 1...Kc5
        • 2.Qd5#
      • 1...Kd7!
    • 1.Qh5?
      • threat
        • 2.Qb5#
        • 2.Qd5#
      • 1...Kd7
        • 2.Qe8#
      • 1...Kb7!
  • Keys
    • 1.Qh8!
      • 1...Kc5
        • 2.Qc3#
      • 1...Kb7
        • 2.Qa8#
      • 1...Kd7
        • 2.Qe8#

Anticipated by 206947(1859)

This anticipates 214539(1878), 218488(1882), 218611(1882), 24321(1885), 181144(1904), 182379(1906), 109336(1920), 22076(1924), 206740(1925), 227725(1926), 76425(1929), 46372(1941), 18804(1958), 218807(1976), 138100(1981), 133136(1983), 211346(1986), 184446(2000), 47757(2003), 67253(2006), 232491(2012), 235007(2019)

There are these versions: 32680

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::QAR2(B)
      • K(a);S_FLIGHT::QAB1(B)
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