MESON Chess Problem Database

Problem Display
PID: 149805 (8/2BpppK1/2p1k1p1/4P3/4Q3/4R3/4B3/8 w - - 0 1)

Brown, LT

Atlanta Sunny South, 1879

8/2BpppK1/2p1k1p1/4P3/4Q3/4R3/4B3/8

#2

6 + 6

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.exf5 ep#
    • 1...f6
      • 2.exf6#
  • Tries
    • 1.Qc4+?
      • 1...Kf5
        • 2.Qg4#
      • 1...d5!
    • 1.Qg4+?
      • 1...Kd5
        • 2.Qc4#
      • 1...f5!
  • Keys
    • 1.Bg4+!
      • 1...f5
        • 2.exf5 ep#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • P(f);OGATE::QAR(C)+P(D),XP(f),EP
    • P(f);OGATE::QAR(C)+P(D),XP(f)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • B(A);CHECK
    • Vars
      • P(f);OGATE,P_SPINP(f)::QAR(C)+P(D)DCHECK,XP(f),EP
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