MESON Chess Problem Database

Problem Display
PID: 247688 (2Knk1N1/8/6PB/7B/8/8/8/8 w - - 0 1)

Lewis, Robert Tony

The Problemist, 1990

2Knk1N1/8/6PB/7B/8/8/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.g7#
    • 1...Se6
      • 2.g7#
    • 1...Sb7
      • 2.g7#
    • 1...Sf7
      • 2.gxf7#
  • Tries
    • 1.Kc7?
      • 1...Sc6
        • 2.g7#
      • 1...Sb7
        • 2.g7#
      • 1...Sf7
        • 2.gxf7#
      • 1...Se6+!
    • 1.Bd1?
      • 1...Se6
        • 2.Ba4#
      • 1...Sb7
        • 2.Ba4#
      • 1...Sf7
        • 2.Ba4#
      • 1...Sc6!
    • 1.Be2?
      • 1...Se6
        • 2.Bb5#
      • 1...Sb7
        • 2.Bb5#
      • 1...Sf7
        • 2.Bb5#
      • 1...Sc6!
  • Keys
    • 1.Bf3!
      • 1...Sc6
        • 2.Bxc6#
      • 1...Se6
        • 2.Bc6#
      • 1...Sb7
        • 2.Bc6#
      • 1...Sf7
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::B(A)+P(B)
    • S(a);OGATE::P(B),XS(a)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • S(a);N_GUARD::B(A)+P(B)
        • S(a);OGATE::P(B),XS(a)
      • Refutation
        • S(a);CHECK
    • Try
      • B(A);
      • Vars
        • S(a);N_GUARD::B(A)
      • Refutation
        • S(a);
    • Try
      • B(A);
      • Vars
        • S(a);N_GUARD::B(A)
      • Refutation
        • S(a);
  • Actual
    • B(A);
    • Vars
      • S(a);N_GUARD::B(A),XS(a)
      • S(a);N_GUARD::B(A)
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