MESON Chess Problem Database

Problem Display
PID: 2159 (8/3p4/1B1p2N1/K2k2P1/6P1/8/2P5/Q7 w - - 0 1)

Carpenter, George Edward

Source?, 0000

8/3p4/1B1p2N1/K2k2P1/6P1/8/2P5/Q7

#2

7 + 3

1679 American Chess Nuts 1868
119 Tidskrift for Schack 1909
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qd4#
    • 1...Ke4
      • 2.Qh1#
  • Tries
    • 1.Kb5?
      • 1...Ke4
        • 2.Qh1#
      • 1...Ke6!
    • 1.Ka6?
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qh1#
      • 1...Kc6
        • 2.Se7#
      • 1...Ke6!
    • 1.Se7+?
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke6
        • 2.Qf6#
      • 1...Ke4!
    • 1.Qc3?
      • 1...Ke4
        • 2.Qd3#
      • 1...Ke6!
    • 1.Qf6?
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qf5#
      • 1...Kc6!
    • 1.Qf1?
      • 1...Ke4
        • 2.Qg2#
        • 2.Qd3#
        • 2.Qh1#
        • 2.Qf5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc6!
  • Keys
    • 1.Qh8!
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qh1#
      • 1...Kc6
        • 2.Qa8#
      • 1...Ke6
        • 2.Qg8#

This anticipates 43244(1982)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(A)
    • K(a);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB(A)
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::QAB(A)
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