MESON Chess Problem Database

Problem Display
PID: 243090 (5k1n/R5n1/5N1K/4N3/8/8/8/8 w - - 0 1)

Anonymous

Source?, 1300

5k1n/R5n1/5N1K/4N3/8/8/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sg6
      • 2.Sxg6#
      • 2.Rf7#
    • 1...Sf7+
      • 2.Rxf7#
  • Tries
    • 1.Sh7+?
      • 1...Kg8
        • 2.Rxg7#
      • 1...Ke8!
    • 1.Ra8+?
      • 1...Se8
        • 2.Rxe8#
      • 1...Ke7!
  • Keys
    • 1.Rxg7!
      • threat
        • 2.Sed7#
      • 1...Sf7+
        • 2.Rxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(c);CHECK,N_GUARD::R1(D),XS(c)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(b);P-FLIGHT::R1(D),XS(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R1(D),XS(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(D);XS(a)
    • Threat
      • S(A)
    • Vars
      • S(c);CHECK,N_GUARD::R1(D),XS(c)
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