MESON Chess Problem Database

Problem Display
PID: 240605 (1b3R2/n1k1PK2/B1p2N2/2P5/8/8/3r4/8 w - - 0 1)

Janevski, Zivko

Thema Danicum, 1984

1b3R2/n1k1PK2/B1p2N2/2P5/8/8/3r4/8

#2

6 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd7
      • 2.Se8#
    • 1...Rd8
      • 2.exd8Q#
      • 2.exd8B#
    • 1...Sb5
      • 2.Rc8#
    • 1...Sc8
      • 2.Rxc8#
  • Tries
    • 1.Rd8?
      • threat
        • 2.Se8#
      • 1...Rf2
        • 2.Rd7#
      • 1...Rxd8!
  • Keys
    • 1.e8Q!
      • threat
        • 2.Qxb8#
      • 1...Rd7+
        • 2.Qxd7#
      • 1...Rb2
        • 2.Qd7#
        • 2.Qe5#
        • 2.Qe7#
        • 2.Qd8#
      • 1...Rd8
        • 2.Qxd8#
      • 1...Sc8
        • 2.Qxc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(a);P_PINP(D),SBLOCK::S(C)
    • R(a);OGATE::PXR(a)=Q
    • S(c);N_GUARD::R1(F)
    • S(c);N_GUARD::R1(F),XS(c)
  • Tries
    • Try
      • R(F);
      • Threat
        • S(C)
      • Vars
        • R(a);N_GUARD,P_PINS(C)::R1(F)
      • Refutation
        • R(a);XR(F)
  • Actual
    • P(D);
    • Threat
      • QAB1(D),XB(e)
    • Vars
      • R(a);CHECK,N_GUARD::QAR1(D),XR(a)
      • R(a);N_GUARD::QAB1(D),XR(a)
      • S(c);N_GUARD::QAR1(D),XS(c)
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