MESON Chess Problem Database

Problem Display
PID: 15731 (8/4B3/7p/3Q1p2/6k1/8/6K1/6n1 w - - 0 1)

Lincoln, Robert A

Newark Star-Ledger, 1987

8/4B3/7p/3Q1p2/6k1/8/6K1/6n1

#2

3 + 4

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qd4#
    • 1...Kh5
      • 2.Qxf5#
    • 1...Se2
      • 2.Qf3#
    • 1...Sf3
      • 2.Qxf3#
    • 1...Sh3
      • 2.Qf3#
  • Tries
    • 1.Qe4+?
      • 1...Kh5
        • 2.Qxf5#
      • 1...f4
        • 2.Qg6#
      • 1...fxe4!
    • 1.Qd1+?
      • 1...Kf4
        • 2.Qd4#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Se2!
  • Keys
    • 1.Qd3!
      • 1...Kf4
        • 2.Qd4#
      • 1...Kh5
        • 2.Qxf5#
      • 1...f4
        • 2.Qg6#
      • 1...Se2
        • 2.Qf3#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sh3
        • 2.Qf3#
      • 1...h5
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(B)
    • K(b);P_SPINP(c),S_FLIGHT::QAR2(B),XP(c)
    • S(a);N_GUARD::QAB1(B)
    • S(a);N_GUARD::QAB1(B),XS(a)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(B),XP(c)
        • P(c);OGATE,P_SPINP(c),SBLOCK::QAR2(B)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • Q(B);
    • Vars
      • K(b);P-FLIGHT::QAR2(B)
      • K(b);S_FLIGHT::QAR2(B),XP(c)
      • P(c);OGATE,SBLOCK::QAR2(B)
      • S(a);N_GUARD::QAB1(B)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • P(d);SBLOCK::QAR1(B)
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Developed and maintained by Brian Stephenson.
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