MESON Chess Problem Database

Problem Display
PID: 185801 (7N/3p4/4k3/8/2P2K2/3Q4/1B6/8 w - - 0 1)

Lincoln, Robert A

Problem Observer, 2016

7N/3p4/4k3/8/2P2K2/3Q4/1B6/8

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sg6?
      • threat
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
      • 1...d6
        • 2.Qf5#
      • 1...Kf7!
  • Keys
    • 1.Ba3!
      • threat
        • 2.Qf5#
        • 2.Qg6#
        • 2.Qd6#
      • 1...Kf6
        • 2.Qg6#
      • 1...d5
        • 2.Qf5#
      • 1...d6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(B)
      • Vars
        • P(b);::QAB1(B),XP(b)
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(A);
    • Threat
      • DUALS(3)
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • P(b);::QAB1(B)
      • P(b);::QAR1(B),XP(b)
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