MESON Chess Problem Database

Problem Display
PID: 38805 (8/n1b5/8/8/kPQB4/8/K7/8 w - - 0 1)

Lincoln, Robert A

Chess Life, 1997

8/n1b5/8/8/kPQB4/8/K7/8

#2

4 + 3

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.Qb3#
  • Tries
    • 1.Qa6+?
      • 1...Ba5
        • 2.Qxa5#
      • 1...Kxb4!
  • Keys
    • 1.Bc3!
      • threat
        • 2.b5#
      • 1...Ba5
        • 2.bxa5#
      • 1...Bd6
        • 2.Qa6#
      • 1...Sb5
        • 2.Qb3#
      • 1...Sc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAR1(C),XB(c)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
  • Actual
    • B(D);
    • Threat
      • QAR(C)+P(B)
    • Vars
      • B(c);OGATE::QAR(C)+P(B),XB(c)
      • B(c);N_GUARD::QAR2(C)
      • S(b);SBLOCK::QAB1(C)
      • S(b);N_GUARD::QAB(C),XS(b)
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