MESON Chess Problem Database

Problem Display
PID: 264950 (8/Q1B4B/1p4R1/3k4/P7/1K6/8/8 w - - 0 1)

Fontaine, Leon

Probleemblad, 1949

8/Q1B4B/1p4R1/3k4/P7/1K6/8/8

#2

6 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Rd6+?
      • 1...Kc5
        • 2.Qxb6#
      • 1...Ke5!
    • 1.Qb7+?
      • 1...Kc5
        • 2.Bxb6#
      • 1...Kd4!
    • 1.Qa8+?
      • 1...Kc5
        • 2.Bxb6#
      • 1...Kd4!
  • Keys
    • 1.Rxb6!
      • 1...Kd4
        • 2.Rb5#
      • 1...Kc5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT,P_SPINP(b)::QAB1(D),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::B(E),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::B(E),XP(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(C);XP(b)
    • Vars
      • K(a);N_GUARD,P-FLIGHT::QAB(D)+R(C)
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