MESON Chess Problem Database

Problem Display
PID: 2099 (7n/3n4/7p/2b2K1k/6p1/1Q4P1/8/4B3 w - - 0 1)

Brown, Theodore Morris

Source?, 0000

7n/3n4/7p/2b2K1k/6p1/1Q4P1/8/4B3

#2

4 + 6

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Sf7
      • 2.Qxf7#
  • Tries
    • 1.Qf7+?
      • 1...Sg6
        • 2.Qxg6#
      • 1...Sxf7!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qh1#
        • 2.Qxg4#
      • 1...gxf3
        • 2.g4#
      • 1...Bg1
        • 2.Qxg4#
      • 1...Be7
        • 2.Qxg4#
      • 1...Se5
        • 2.Qh1#
      • 1...Sf6
        • 2.Qh1#
      • 1...Sg6
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • S(f);N_GUARD::QAB(B),XS(f)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAB1(B),XS(f)
      • Refutation
        • S(f);XQ(B)
  • Actual
    • Q(B);P_PINP(a)
    • Threat
      • DUALS(2)
    • Vars
      • P(a);N_SPINP(a),OGATE,XQ(B)::P(C)
      • B(b);::QAB1(B),XP(a)
      • S(e);::QAR(B)
      • S(f);::QAB1(B),XP(a)
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