MESON Chess Problem Database

Problem Display
PID: 23193 (7N/5K1p/8/7k/4BQ2/7r/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

7N/5K1p/8/7k/4BQ2/7r/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Bf3#
    • 1...Rh2
      • 2.Bf3#
    • 1...Rf3
      • 2.Bxf3#
    • 1...h6
      • 2.Bg6#
  • Tries
    • 1.Kf6?
      • threat
        • 2.Qg5#
      • 1...Rf3
        • 2.Bxf3#
      • 1...h6
        • 2.Bg6#
      • 1...Rg3!
  • Keys
    • 1.Sg6!
      • 1...hxg6
        • 2.Bxg6#
      • 1...Ra3
        • 2.Qh4#
      • 1...Rh1
        • 2.Bf3#
      • 1...Rh2
        • 2.Bf3#
      • 1...Rb3
        • 2.Qh4#
      • 1...Rc3
        • 2.Qh4#
      • 1...Rd3
        • 2.Qh4#
      • 1...Re3
        • 2.Qh4#
      • 1...Rf3
        • 2.Bxf3#
      • 1...Rg3
        • 2.Qh4#
      • 1...Rh4
        • 2.Qxh4#
      • 1...h6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD::B(A)
    • R(a);N_GUARD,P_PINQ(B)::B(A),XR(a)
    • P(c);N_GUARD::B(A)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • QAR1(B)
      • Vars
        • R(a);N_GUARD,P_PINQ(B)::B(A),XR(a)
        • P(c);N_GUARD::B(A)
      • Refutation
        • R(a);
  • Actual
    • S(D);
    • Vars
      • P(c);OGATE,XS(D)::B(A),XP(c)
      • R(a);N_GUARD::QAR1(B)
      • R(a);N_GUARD::B(A)
      • R(a);N_GUARD,P_PINQ(B)::B(A),XR(a)
      • R(a);N_GUARD::QAR1(B),XR(a)
      • P(c);SBLOCK::QAR2(B)
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