MESON Chess Problem Database

Problem Display
PID: 2175 (8/8/3k4/B7/8/4P3/B7/3K2Q1 w - - 0 1)

Cheney, George Nelson

Source?, 0000

8/8/3k4/B7/8/4P3/B7/3K2Q1

#2

5 + 1

1679 American Chess Nuts 1868
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Qg5?
      • 1...Kc6
        • 2.Qd5#
      • 1...Kd7!
    • 1.Qg6+?
      • 1...Kc5
        • 2.Qb6#
      • 1...Ke5
        • 2.Bc3#
        • 2.Bc7#
        • 2.Qe6#
      • 1...Kd7
        • 2.Qe6#
      • 1...Ke7!
  • Keys
    • 1.Qg8!
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5
        • 2.Qe6#
      • 1...Kc6
        • 2.Qd5#
      • 1...Kd7
        • 2.Qe6#
      • 1...Ke7
        • 2.Qd8#

This anticipates 49566(0000), 47351(1888), 181089(1904), 121530(1905), 182229(1906), 182335(1906), 194004(1917), 195071(1918), 205689(1925), 174121(1926), 227459(1926), 227672(1926), 227673(1926), 227674(1926), 227676(1926), 77127(1948), 10704(1967), 11832(1972), 12251(1976), 196647(1999), 248693(2007)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAR1(B)
      • K(a);P-FLIGHT::QAB1(B)
      • K(a);S_FLIGHT::QAB1(B)
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