MESON Chess Problem Database

Problem Display
PID: 196358 (8/3K4/4P3/1N1k4/3p4/PR1R2N1/BB6/8 w - - 0 1)

Janocko, Jan

Sachova skladba, 1986

8/3K4/4P3/1N1k4/3p4/PR1R2N1/BB6/8

#2

9 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sd6?
      • threat
        • 2.Rb5#
      • 1...Kc5
        • 2.Rb5#
      • 1...Ke5!
    • 1.Sa7?
      • threat
        • 2.Rb5#
      • 1...Kc4
        • 2.Rbc3#
      • 1...Kc5
        • 2.Rb5#
      • 1...Ke5!
    • 1.Sc7+?
      • 1...Kc4
        • 2.Rbc3#
      • 1...Kc5
        • 2.Rb5#
      • 1...Ke5!
    • 1.Rb4+?
      • 1...Kc5
        • 2.Bxd4#
      • 1...Ke5!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Rb5#
      • 1...Kc4
        • 2.Rbc3#
      • 1...Kc5
        • 2.Rb5#
      • 1...Ke5
        • 2.Sde2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • B(A)+R(D),DCHECK
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::R1(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(G);
      • Threat
        • B(A)+R(D),DCHECK
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::B(A)+R(D),DCHECK
        • K(b);N_SPINP(a),P-FLIGHT::R1(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::B(A)+R(D),DCHECK
        • K(b);N_SPINP(a),P-FLIGHT::R1(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::B(B),XP(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(G);XP(a)
    • Threat
      • B(A)+R(D),DCHECK
    • Vars
      • K(b);S_FLIGHT::B(A)+R(D),DCHECK
      • K(b);P-FLIGHT::R1(D)
      • K(b);P-FLIGHT::B(B)+S(G)
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