MESON Chess Problem Database

Problem Display
PID: 84895 (2R5/8/1pp5/5r2/1p4r1/1Pk1P3/P5BR/2K1N3 w - - 0 1)

Petite, Efren

4th Comm., Boletim da UBP, 1988-1989

2R5/8/1pp5/5r2/1p4r1/1Pk1P3/P5BR/2K1N3

#2

8 + 6

1077 Boletim da UBP 1991
6490 yacpdb 2009
5454 Near Snap 2015

SOLUTION

  • SOUND
  • Tries
    • 1.Be4?
      • threat
        • 2.Rc2#
      • 1...Rf2
        • 2.Rxc6#
      • 1...Rg2!
    • 1.Bd5?
      • threat
        • 2.Rc2#
      • 1...Rg2
        • 2.Rxc6#
      • 1...Rf2!
    • 1.Rxc6+?
      • 1...Rc4
        • 2.Rxc4#
      • 1...Rc5!
  • Keys
    • 1.Bxc6!
      • threat
        • 2.Rc2#
      • 1...Rg2
        • 2.Bd5#
      • 1...Rf2
        • 2.Be4#

This anticipates 55226(1991)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • R1(E)
      • Vars
        • R(d);N_GUARD::R(H),XP(f)
      • Refutation
        • R(c);
    • Try
      • B(D);
      • Threat
        • R1(E)
      • Vars
        • R(c);N_GUARD::R(H),XP(f)
      • Refutation
        • R(d);
    • Try
      • R(H);CHECK,XP(f)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::R1(H),XR(c)
      • Refutation
        • R(d);P_SPINR(d)
  • Actual
    • B(D);XP(f)
    • Threat
      • R1(E)
    • Vars
      • R(c);N_GUARD::R(H)+B(D)
      • R(d);N_GUARD::R(H)+B(D)
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