MESON Chess Problem Database

Problem Display
PID: 268128 (K2n4/4p3/1Np1k3/1p3R1R/1B2Nb2/5b2/2r1Q3/1B6 w - - 0 1)

Dittrich, Stefan

Probleemblad, 1985

K2n4/4p3/1Np1k3/1p3R1R/1B2Nb2/5b2/2r1Q3/1B6

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Sg5#
    • 1...Ra2+
      • 2.Bxa2#
      • 2.Qxa2#
    • 1...Rb2
      • 2.Sg5#
    • 1...Rd2
      • 2.Sg5#
    • 1...Rc3
      • 2.Sg5#
    • 1...Rc4
      • 2.Sg5#
    • 1...Bd6
      • 2.Sc5#
  • Tries
    • 1.Ba2+?
      • 1...Rxa2+
        • 2.Qxa2#
      • 1...Rc4!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qd7#
      • 1...Ra2+
        • 2.Bxa2#
      • 1...Rd2
        • 2.Sc5#
      • 1...Bd6
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(a);::QAR(B)+S(D),DCHECK
    • B(c);SBLOCK::QAR(B)+S(D),DCHECK
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • R(a);CHECK,OGATE,XB(A)::QAB(B),XR(a)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • R(a);CHECK,N_GUARD::B(A),XR(a)
      • R(a);N_GUARD::S(D)
      • B(c);N_GUARD::S(D)
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