MESON Chess Problem Database

Problem Display
PID: 52345 (2N5/4R3/N3n3/2pk2P1/P6R/4K3/2PP4/8 w - - 0 1)

Lewis, Robert Tony

Problem Observer, 2004

2N5/4R3/N3n3/2pk2P1/P6R/4K3/2PP4/8

#2

9 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Rd7+?
      • 1...Kc6
        • 2.Sb8#
      • 1...Ke5!
    • 1.c4+?
      • 1...Kc6
        • 2.Sb8#
      • 1...Ke5!
  • Keys
    • 1.Rc4!
      • 1...Kxc4
        • 2.Sb6#
      • 1...Ke5
        • 2.Rxc5#
      • 1...Kc6
        • 2.Sb4#
      • 1...Sxg5
        • 2.Rxc5#
      • 1...Sd4
        • 2.Rxc5#
      • 1...Sf4
        • 2.Rxc5#
      • 1...Sc7
        • 2.Rxc5#
      • 1...Sg7
        • 2.Rxc5#
      • 1...Sd8
        • 2.Rxc5#
      • 1...Sf8
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • K(b);S_FLIGHT::S(G)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • P(A);CHECK
      • Vars
        • K(b);S_FLIGHT::S(G)
      • Refutation
        • K(b);P-FLIGHT,P_SPINS(c)
  • Actual
    • R(E);
    • Vars
      • K(b);S_FLIGHT,XR(E)::S(I)
      • K(b);P-FLIGHT,P_SPINS(c)::R(E),XP(a)
      • K(b);P_SPINP(a),S_FLIGHT::S(G)
      • S(c);N_GUARD,XP(F)::R1(E),XP(a)
      • S(c);N_GUARD::R1(E),XP(a)
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