MESON Chess Problem Database

Problem Display
PID: 47660 (8/8/4Np2/7K/4k3/4N3/BQ6/8 w - - 0 1)

Lincoln, Robert A

Chess Life, 2002

8/8/4Np2/7K/4k3/4N3/BQ6/8

#2

5 + 2

4883 Still More Fun with Chess Miniatures 2002
56 The Problemist 2012
136 Problem Observer 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Sg4?
      • 1...Kd3
        • 2.Sc5#
      • 1...Kf5
        • 2.Qb1#
        • 2.Qc2#
      • 1...f5
        • 2.Qe2#
      • 1...Kf3!
    • 1.Sf5?
      • 1...Kd3
        • 2.Sc5#
      • 1...Kf3
        • 2.Bd5#
      • 1...Kxf5!
    • 1.Qe2?
      • 1...f5
        • 2.Sd1#
        • 2.Sf1#
        • 2.Sc2#
        • 2.Sg2#
        • 2.Sg4#
        • 2.Sd5#
      • 1...Ke5!
  • Keys
    • 1.Sf1!
      • 1...Kd3
        • 2.Sc5#
      • 1...Kf3
        • 2.Bd5#
      • 1...Kf5
        • 2.Sg3#
      • 1...f5
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::S(E)
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::S(E)
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(B);
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::S(E)
      • K(a);S_FLIGHT::B(A)
      • K(a);S_FLIGHT::S(C)
      • P(b);SBLOCK::QAR2(B)
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