MESON Chess Problem Database

Problem Display
PID: 23194 (6B1/7K/7N/7k/5r1P/8/8/7Q w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

6B1/7K/7N/7k/5r1P/8/8/7Q

#2

5 + 2

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Bf7#
    • 1...Rb4
      • 2.Bf7#
    • 1...Rc4
      • 2.Bf7#
    • 1...Rd4
      • 2.Bf7#
    • 1...Re4
      • 2.Bf7#
    • 1...Rxh4
      • 2.Qd5#
    • 1...Rf7+
      • 2.Bxf7#
  • Tries
    • 1.Be6?
      • 1...Rf7+
        • 2.Bxf7#
      • 1...Rxh4
        • 2.Qd5#
      • 1...Rf1
        • 2.Bg4#
      • 1...Rf2
        • 2.Bg4#
      • 1...Rf3
        • 2.Bg4#
      • 1...Ra4
        • 2.Bf7#
      • 1...Rb4
        • 2.Bf7#
      • 1...Rc4
        • 2.Bf7#
      • 1...Rd4
        • 2.Bf7#
      • 1...Re4
        • 2.Bf7#
      • 1...Rg4
        • 2.Bxg4#
      • 1...Rf6
        • 2.Bg4#
      • 1...Rf8
        • 2.Bg4#
      • 1...Rf5!
  • Keys
    • 1.Qh3!
      • 1...Rf7+
        • 2.Bxf7#
      • 1...Rxh4
        • 2.Qf5#
      • 1...Rf1
        • 2.Qg4#
      • 1...Rf2
        • 2.Qg4#
      • 1...Rf3
        • 2.Qg4#
      • 1...Ra4
        • 2.Bf7#
      • 1...Rb4
        • 2.Bf7#
      • 1...Rc4
        • 2.Bf7#
      • 1...Rd4
        • 2.Bf7#
      • 1...Re4
        • 2.Bf7#
      • 1...Rg4
        • 2.Qxg4#
      • 1...Rf5
        • 2.Qg4#
      • 1...Rf6
        • 2.Qg4#
      • 1...Rf8
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD::B(E)
    • R(a);N_GUARD,P_SPINR(a),SBLOCK,XP(B)::QAR(A)
    • R(a);CHECK,N_GUARD::B(E),XR(a)
  • Tries
    • Try
      • B(E);
      • Vars
        • R(a);CHECK,N_GUARD::B(E),XR(a)
        • R(a);N_GUARD,P_SPINR(a),SBLOCK,XP(B)::QAR(A)
        • R(a);N_GUARD::B(E)
        • R(a);N_GUARD::B(E),XR(a)
      • Refutation
        • R(a);
  • Actual
    • Q(A);
    • Vars
      • R(a);CHECK,N_GUARD::B(E),XR(a)
      • R(a);N_GUARD,P_SPINR(a),SBLOCK,XP(B)::QAR2(A)
      • R(a);N_GUARD::QAB1(A)
      • R(a);N_GUARD::B(E)
      • R(a);N_GUARD::QAB1(A),XR(a)
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