MESON Chess Problem Database

Problem Display
PID: 39402 (B7/2p5/8/2N5/K1k5/4Q3/8/n7 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

B7/2p5/8/2N5/K1k5/4Q3/8/n7

#2

4 + 3

145 StrateGems 2003

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sd2#
        • 2.Sa5#
        • 2.Qd4#
      • 1...c6
        • 2.Qd4#
      • 1...Sc2
        • 2.Sd2#
        • 2.Sa5#
      • 1...c5
        • 2.Sd2#
        • 2.Sa5#
      • 1...Sxb3!
    • 1.Se4?
      • threat
        • 2.Sd2#
        • 2.Qc3#
      • 1...Sb3
        • 2.Qc3#
      • 1...c6!
    • 1.Se6?
      • threat
        • 2.Qd4#
      • 1...Sc2
        • 2.Qb3#
      • 1...Sb3
        • 2.Qxb3#
      • 1...c5!
    • 1.Qf4+?
      • 1...Kxc5
        • 2.Qb4#
      • 1...Kc3!
    • 1.Qe4+?
      • 1...Kxc5
        • 2.Qb4#
      • 1...Kc3!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Se5#
      • 1...c6
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • P(c);::QAR1(A)
      • Refutation
        • S(a);XS(C)
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR1(A)
      • Refutation
        • P(c);
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(a);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT,XS(C)::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT,XS(C)::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • P(c);N_GUARD::S(C)
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