MESON Chess Problem Database

Problem Display
PID: 2409 (8/3pB3/3P4/4k3/1R4P1/1QK5/3P4/8 w - - 0 1)

Howard, Kenneth Samuel

Checkmate, 1904

8/3pB3/3P4/4k3/1R4P1/1QK5/3P4/8

#2

7 + 2

5064 100 Years of the American Two-move Chess Problem 1962
5454 Near Snap 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Rc4?
      • 1...Ke6
        • 2.Re4#
        • 2.Rc5#
      • 1...Kd5!
    • 1.Qc2?
      • threat
        • 2.Qe4#
        • 2.Qf5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kd5!
    • 1.Qb1?
      • threat
        • 2.Qe4#
        • 2.Qf5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kd5!
  • Keys
    • 1.Kc4!
      • threat
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
      • 1...Kf4
        • 2.Kd5#
      • 1...Ke6
        • 2.Kd4#

Anticipated by 4576(1880), 109817(1891), 95234(1898), 92667(1900)

This anticipates 145656(1921), 208458(1950), 73922(1993)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(C);P-FLIGHT
    • Threat
      • QAR2(B)
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);S_FLIGHT::R(D)+K(C)
      • K(a);P-FLIGHT::QAB(B)+K(C)
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