MESON Chess Problem Database

Problem Display
PID: 23191 (8/8/8/8/3B2Q1/1K5p/5N1r/5k2 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/8/8/8/3B2Q1/1K5p/5N1r/5k2

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ke1
      • 2.Qd1#
    • 1...Rg2
      • 2.Qd1#
  • Tries
    • 1.Qg1+?
      • 1...Ke2
        • 2.Qd1#
      • 1...Kxg1!
  • Keys
    • 1.Qf3!
      • 1...Ke1
        • 2.Qd1#
      • 1...Kg1
        • 2.Sxh3#
      • 1...Rxf2
        • 2.Qxf2#
      • 1...Rh1
        • 2.Sd3#
      • 1...Rg2
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(D)
    • R(b);SBLOCK::QAR2(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
  • Actual
    • Q(D);
    • Vars
      • K(a);P-FLIGHT::QAR1(D)
      • K(a);P-FLIGHT::B(C)+S(A),DCHECK,XP(c)
      • R(b);OGATE,P_SPINR(b),XS(A)::QAR1(D),XR(b)
      • R(b);N_GUARD::QAR(D)+S(A)
      • R(b);SBLOCK::QAR2(D)
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