MESON Chess Problem Database

Problem Display
PID: 84975 (4R3/8/8/3N4/K2k4/1B1P4/8/2RN4 w - - 0 1)

Petite, Efren

SEPA, 1973

4R3/8/8/3N4/K2k4/1B1P4/8/2RN4

#2

7 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.S5c3?
      • 1...Kxd3
        • 2.Rd8#
      • 1...Kc5!
    • 1.Rd8?
      • 1...Kxd3
        • 2.S5c3#
      • 1...Ke5!
  • Keys
    • 1.S1c3!
      • 1...Kxd3
        • 2.Rd1#
      • 1...Kc5
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Vars
        • K(a);P-FLIGHT,XP(D)::R(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);
      • Vars
        • K(a);P-FLIGHT,XP(D)::R(G)+S(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(D)::R(A)
      • K(a);S_FLIGHT::R(A)+S(B)
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