MESON Chess Problem Database

Problem Display
PID: 141311 (6B1/8/1B3p2/4kp1K/8/8/3N1n2/6Q1 w - - 0 1)

Fellows, Arthur G

Source?, 0000

6B1/8/1B3p2/4kp1K/8/8/3N1n2/6Q1

#2

5 + 4

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qh2#
    • 1...Sd1
      • 2.Bc7#
      • 2.Qd4#
    • 1...Sh1
      • 2.Bc7#
      • 2.Qd4#
    • 1...Sd3
      • 2.Bc7#
      • 2.Qd4#
    • 1...Sh3
      • 2.Bc7#
      • 2.Qd4#
    • 1...Sg4
      • 2.Bc7#
      • 2.Qd4#
  • Tries
    • 1.Qxf2?
      • threat
        • 2.Bc7#
        • 2.Qd4#
      • 1...f4
        • 2.Qc5#
      • 1...Kd6!
    • 1.Qe1+?
      • 1...Kf4
        • 2.Bc7#
        • 2.Qe3#
      • 1...Kd6
        • 2.Qe6#
      • 1...Se4!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qc7#
      • 1...Kf4
        • 2.Qc7#
      • 1...Kd6
        • 2.Qc7#
      • 1...Se4
        • 2.Sc4#
      • 1...f4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • Q(A);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);SBLOCK::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • K(b);S_FLIGHT::QAB(A)
      • K(b);S_FLIGHT::QAB1(A)
      • S(a);SBLOCK::S(B)
      • P(c);SBLOCK::QAR2(A)
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