MESON Chess Problem Database

Problem Display
PID: 70374 (3B1N1k/5K1p/7p/4pR2/5pnR/3P4/2P5/3q3r w - - 0 1)

Carter, FHN

Chess, 1950

3B1N1k/5K1p/7p/4pR2/5pnR/3P4/2P5/3q3r

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Bf6#
    • 1...Sh2
      • 2.Bf6#
    • 1...Se3
      • 2.Bf6#
    • 1...Sf6
      • 2.Bxf6#
  • Tries
    • 1.Rxg4?
      • threat
        • 2.Bf6#
        • 2.Rg8#
      • 1...Qg1
        • 2.Bf6#
      • 1...Rg1
        • 2.Bf6#
      • 1...Qxg4!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Rg8#
      • 1...hxg5
        • 2.Sg6#
      • 1...Sf6
        • 2.Bxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • S(d);N_GUARD::B(F)
    • S(d);N_GUARD::B(F),XS(d)
  • Tries
    • Try
      • R(C);XS(d)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::B(F)
        • R(b);::B(F)
      • Refutation
        • Q(a);XR(C)
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • P(f);P_SPINP(g),XR(D)::S(G)
      • S(d);N_GUARD::B(F),XS(d)
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