MESON Chess Problem Database

Problem Display
PID: 48083 (8/8/8/5B2/8/5kBn/8/3K2Qb w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

8/8/8/5B2/8/5kBn/8/3K2Qb

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2+
      • 2.Qxf2#
    • 1...Sf4
      • 2.Qf2#
    • 1...Sg5
      • 2.Qf2#
  • Tries
    • 1.Kd2?
      • 1...Bg2
        • 2.Qe3#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sf4
        • 2.Qf2#
      • 1...Sg5
        • 2.Qf2#
      • 1...Sxg1!
    • 1.Qf1+?
      • 1...Ke3
        • 2.Qd3#
      • 1...Sf2+
        • 2.Qxf2#
      • 1...Kxg3!
    • 1.Qxh1+?
      • 1...Ke3
        • 2.Qe4#
      • 1...Kxg3!
  • Keys
    • 1.Qe1!
      • 1...Sf2+
        • 2.Qxf2#
      • 1...Kg2
        • 2.Be4#
      • 1...Bg2
        • 2.Qc3#
      • 1...Sg1
        • 2.Qf2#
      • 1...Sf4
        • 2.Qf2#
      • 1...Sg5
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);CHECK,N_GUARD::QAR1(B),XS(c)
    • S(c);N_GUARD::QAR1(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • B(a);SBLOCK::QAR1(B)
        • S(c);N_GUARD::QAR1(B),XS(c)
        • S(c);N_GUARD::QAR1(B)
      • Refutation
        • S(c);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • S(c);CHECK,N_GUARD,P_SPINS(c)::QAR1(B),XS(c)
      • Refutation
        • K(b);P-FLIGHT,XB(C)
    • Try
      • Q(B);CHECK,XB(a)
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XB(C)
  • Actual
    • Q(B);
    • Vars
      • S(c);CHECK,N_GUARD::QAR1(B),XS(c)
      • K(b);S_FLIGHT::B(D)
      • B(a);SBLOCK::QAR(B)
      • S(c);N_GUARD::QAR1(B)
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