MESON Chess Problem Database

Problem Display
PID: 211865 (7Q/6R1/2ppp3/3k1pp1/3P4/1P3Pb1/2b1N3/1BR4K w - - 0 1)

Murarasu, Ion

Schach-Echo, 1990

7Q/6R1/2ppp3/3k1pp1/3P4/1P3Pb1/2b1N3/1BR4K

#2

9 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qa8#
    • 1...e5
      • 2.Qg8#
  • Tries
    • 1.Rxg5?
      • threat
        • 2.Sc3#
      • 1...Bxb3
        • 2.Be4#
      • 1...c5
        • 2.Qa8#
      • 1...e5
        • 2.Qg8#
      • 1...Be1
        • 2.Sf4#
      • 1...Be5!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Sc3#
      • 1...Bxb3
        • 2.Rc5#
      • 1...c5
        • 2.Qa8#
      • 1...e5
        • 2.Qg8#
      • 1...Be1
        • 2.Qe5#
      • 1...Be5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(f);OGATEB::QAB(I)
    • P(h);OGATEB::QAB(I)
  • Tries
    • Try
      • R(H);P_PINP(d),XP(e)
      • Threat
        • S(D)
      • Vars
        • B(a);OGATE,XP(E)::B(A)
        • P(f);OGATEB::QAB(I)
        • P(h);N_SPINP(d),OGATEB::QAB(I)
        • B(b);N_GUARD::S(D)
      • Refutation
        • B(b);N_SPINP(d)
  • Actual
    • R(H);P_PINP(g)
    • Threat
      • S(D)
    • Vars
      • B(a);OGATE,XP(E)::R1(B)
      • P(f);OGATEB::QAB(I)
      • P(h);OGATEB::QAB(I)
      • B(b);N_GUARD::QAR1(I)
      • B(b);N_GUARD::QAR1(I),XB(b)
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