MESON Chess Problem Database

Problem Display
PID: 65954 (4KB2/R7/5p2/5k1p/5p1P/3N1N2/2B4P/8 w - - 0 1)

Anonymous

The Chess Monthly (Hoffer), 1881

4KB2/R7/5p2/5k1p/5p1P/3N1N2/2B4P/8

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Sxf4#
    • 1...Kg6
      • 2.Sxf4#
      • 2.Sde5#
  • Tries
    • 1.Sb4+?
      • 1...Ke6
        • 2.Ra6#
      • 1...Kg4!
    • 1.Ra4?
      • 1...Ke6
        • 2.Sxf4#
      • 1...Kg6
        • 2.Sxf4#
        • 2.Sde5#
      • 1...Kg4!
    • 1.Re7?
      • threat
        • 2.Sf2#
        • 2.Sde5#
      • 1...Kg6
        • 2.Sxf4#
        • 2.Sde5#
      • 1...Kg4!
    • 1.Rg7?
      • threat
        • 2.Sc5#
      • 1...Ke6
        • 2.Sxf4#
      • 1...Ke4!
    • 1.h3?
      • threat
        • 2.Sc5#
      • 1...Ke6
        • 2.Sxf4#
      • 1...Kg6
        • 2.Sxf4#
        • 2.Sde5#
      • 1...Ke4!
  • Keys
    • 1.Ra3!
      • 1...Ke4
        • 2.Sb4#
      • 1...Kg4
        • 2.Sf2#
      • 1...Ke6
        • 2.Sxf4#
      • 1...Kg6
        • 2.Sxf4#
        • 2.Sde5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::S(C),XP(a)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);S_FLIGHT::R(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(F);
      • Vars
        • K(b);S_FLIGHT::S(C),XP(a)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(F);
      • Threat
        • B(A)+S(C)
      • Vars
        • K(b);S_FLIGHT::S(C),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(B);
      • Threat
        • B(A)+S(C)
      • Vars
        • K(b);S_FLIGHT::S(C),XP(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(F);
    • Vars
      • K(b);S_FLIGHT::B(A)+S(C)
      • K(b);S_FLIGHT::S(C)
      • K(b);S_FLIGHT::S(C),XP(a)
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