MESON Chess Problem Database

Problem Display
PID: 96948 (2R5/8/3KP1b1/8/2pk1n1R/2N1p1rn/1P2P2N/8 w - - 0 1)

Belliboni, Caetano

Introducao ao Problema Ortodoxo, 1981

2R5/8/3KP1b1/8/2pk1n1R/2N1p1rn/1P2P2N/8

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Sf3#
    • 1...Rg2
      • 2.Sf3#
    • 1...Rf3
      • 2.Sxf3#
    • 1...Rg4
      • 2.Sf3#
    • 1...Rg5
      • 2.Sf3#
    • 1...Be4
      • 2.Sb5#
  • Tries
    • 1.Rxf4+?
      • 1...Be4
        • 2.Sb5#
        • 2.Rxe4#
      • 1...Sxf4!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Rd5#
      • 1...Rg4
        • 2.Sf3#
      • 1...Rg5
        • 2.Sf3#
      • 1...Be4
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::S(C)
    • R(b);N_GUARD::S(C),XR(b)
    • R(b);N_GUARD,N_SPINS(f)::S(C)
    • B(g);N_SPINS(f),SBLOCK::S(D)
  • Tries
    • Try
      • R(E);CHECK,XS(f)
      • Refutation
        • S(c);XR(E)
  • Actual
    • R(H);
    • Threat
      • R1(H)
    • Vars
      • R(b);N_GUARD,N_SPINS(f)::S(C)
      • R(b);N_GUARD::S(C)
      • B(g);N_SPINS(f),SBLOCK::S(D)
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