MESON Chess Problem Database

Problem Display
PID: 166709 (4k1K1/2pR2R1/8/4r3/8/N7/8/8 w - - 0 1)

Lincoln, Robert A

StrateGems, 2016

4k1K1/2pR2R1/8/4r3/8/N7/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ra5
      • 2.Rge7#
    • 1...Rb5
      • 2.Rge7#
    • 1...Rc5
      • 2.Rge7#
    • 1...Rd5
      • 2.Rge7#
    • 1...Rf5
      • 2.Rge7#
    • 1...Rh5
      • 2.Rge7#
    • 1...Re7
      • 2.Rgxe7#
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sxc7#
      • 1...Rxb5
        • 2.Rge7#
      • 1...Re7
        • 2.Rgxe7#
      • 1...Rc5
        • 2.Rge7#
      • 1...c5
        • 2.Sd6#
        • 2.Sc7#
      • 1...c6
        • 2.Sd6#
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::R1(C)
    • R(a);N_GUARD::R1(C),XR(a)
  • Actual
    • S(A);
    • Threat
      • S(A),XP(b)
    • Vars
      • R(a);N_GUARD,XS(A)::R1(C)
      • R(a);N_GUARD::R1(C),XR(a)
      • R(a);N_GUARD::R1(C)
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