MESON Chess Problem Database

Problem Display
PID: 157982 (1qb5/1nnRp3/2k1N3/8/2PQ2B1/5K2/7R/8 w - - 0 1)

Abdullayev, Elmar

Sachmatija, 2014

1qb5/1nnRp3/2k1N3/8/2PQ2B1/5K2/7R/8

#2

7 + 6

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qa7
      • 2.Rxc7#
    • 1...Qa8
      • 2.Rxc7#
    • 1...Sa5
      • 2.Sd8#
    • 1...Sd6
      • 2.Sd8#
    • 1...Sd8
      • 2.Sxd8#
  • Tries
    • 1.Rh6?
      • threat
        • 2.Sd8#
      • 1...Sd8
        • 2.Sxd8#
      • 1...Sxe6!
    • 1.Rd6+?
      • 1...Sxd6
        • 2.Sd8#
      • 1...exd6!
  • Keys
    • 1.Rb2!
      • threat
        • 2.Rb6#
      • 1...Sd6
        • 2.Sd8#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Qa7
        • 2.Rxc7#
      • 1...Sa5
        • 2.Sd8#
      • 1...Sc5
        • 2.Sd8#
      • 1...Sd8
        • 2.Sxd8#
      • 1...Sb5
        • 2.cxb5#
      • 1...Sa8
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(e);N_GUARD::R1(G),XS(c)
    • S(b);N_GUARD::S(F)
    • S(b);N_GUARD::S(F),XS(b)
  • Tries
    • Try
      • R(A);
      • Threat
        • R(A)+S(F),DCHECK
      • Vars
        • S(b);::R(A)+S(F),DCHECK,XS(b)
      • Refutation
        • S(c);P_SPINS(c),XS(F)
    • Try
      • R(G);CHECK
      • Vars
        • S(b);XR(G)::S(F)
      • Refutation
        • P(d);XR(G)
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • S(b);N_GUARD::S(F)
      • S(c);N_GUARD::QAB1(D),XS(c)
      • Q(e);N_GUARD::R1(G),XS(c)
      • S(b);N_GUARD::S(F),XS(b)
      • S(c);OGATE::P(C),XS(c)
      • S(c);N_GUARD::QAB1(D)
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