MESON Chess Problem Database

Problem Display
PID: 151760 (1R5K/2p5/1BknQnR1/8/P2P4/8/8/b7 w - - 0 1)

Bakcsi, Gyorgy

Shakhmaty (Riga), 1973

1R5K/2p5/1BknQnR1/8/P2P4/8/8/b7

#2

7 + 5

133 The Problemist Supplement 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Qe8#
    • 1...Sd7
      • 2.Qe4#
  • Tries
    • 1.Rxf6?
      • threat
        • 2.d5#
      • 1...cxb6
        • 2.Qxd6#
      • 1...Bxd4!
  • Keys
    • 1.Rg7!
      • threat
        • 2.Rxc7#
      • 1...cxb6
        • 2.Rc8#
      • 1...Sd5
        • 2.Qd7#
      • 1...Sd7
        • 2.d5#
      • 1...Se8
        • 2.d5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD,P_PINP(B),SBLOCK::QAB(D)
  • Tries
    • Try
      • R(E);XS(d)
      • Threat
        • P(B)
      • Vars
        • P(e);N_GUARD,XB(C)::QAR1(D),XS(c)
      • Refutation
        • B(a);P_PINR(E),XP(B)
  • Actual
    • R(E);
    • Threat
      • R1(E),XP(e)
    • Vars
      • P(e);OGATEB,SBLOCK,XB(C)::R(F)
      • S(d);N_GUARD,SBLOCK::QAB1(D)
      • S(d);N_GUARD::P(B)
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