MESON Chess Problem Database

Problem Display
PID: 48020 (8/8/K7/3Q4/kb6/8/1P1p4/1n6 w - - 0 1)

Lincoln, Robert A

Newark Star-Ledger, 1998

8/8/K7/3Q4/kb6/8/1P1p4/1n6

#2

3 + 4

4883 Still More Fun with Chess Miniatures 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Qb5#
    • 1...Bc3
      • 2.Qb5#
    • 1...Ba5
      • 2.Qb5#
    • 1...Bd6
      • 2.Qb5#
    • 1...Be7
      • 2.Qb5#
    • 1...Bf8
      • 2.Qb5#
    • 1...Sa3
      • 2.b3#
    • 1...d1Q
      • 2.Qxd1#
    • 1...d1S
      • 2.Qxd1#
    • 1...d1B
      • 2.Qxd1#
    • 1...d1R
      • 2.Qxd1#
  • Tries
    • 1.Qa2+?
      • 1...Sa3
        • 2.b3#
      • 1...Ba3!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qc2#
      • 1...Ba3
        • 2.Qb5#
      • 1...Bc3
        • 2.Qb5#
      • 1...Ba5
        • 2.Qb5#
      • 1...Bc5
        • 2.Qb5#
      • 1...Bd6
        • 2.Qb5#
      • 1...Be7
        • 2.Qb5#
      • 1...Bf8
        • 2.Qb5#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...Sa3
        • 2.b3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(d);::QAB1(B)
    • S(a);SBLOCK::P(A)
    • P(b);OGATE::QAB(B),XQ(b)
    • P(b);OGATE::QAB(B),XS(b)
    • P(b);OGATE::QAB(B),XB(b)
    • P(b);OGATE::QAB(B),XR(b)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(a);P_SPINS(a)::P(A)
      • Refutation
        • B(d);P_SPINB(d)
  • Actual
    • Q(B);
    • Threat
      • QAB(B)
    • Vars
      • B(d);::QAB1(B)
      • P(b);OGATE::QAB(B),XQ(b)
      • P(b);OGATE::QAB(B),XB(b)
      • S(a);SBLOCK::P(A)
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