MESON Chess Problem Database

Problem Display
PID: 215970 (b4k2/4p2K/6B1/8/4N1Q1/8/1br3n1/8 w - - 0 1)

Uhler, Ekkehard

Badische Neueste Nachrichten, 1982

b4k2/4p2K/6B1/8/4N1Q1/8/1br3n1/8

#2

4 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re2
      • 2.Qc8#
    • 1...Rf2
      • 2.Qc8#
    • 1...Rc3
      • 2.Qf5#
    • 1...Rc8
      • 2.Qxc8#
    • 1...Bc1
      • 2.Qf5#
    • 1...Ba3
      • 2.Qf5#
    • 1...Bc3
      • 2.Qc8#
  • Tries
    • 1.Qe6?
      • threat
        • 2.Qf7#
        • 2.Qg8#
      • 1...Rf2
        • 2.Qc8#
        • 2.Qg8#
      • 1...Bd5!
    • 1.Qd7?
      • threat
        • 2.Qe8#
        • 2.Qd8#
      • 1...Rd2
        • 2.Qe8#
      • 1...Rc8
        • 2.Qxc8#
      • 1...Bc6!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qf5#
        • 2.Qc8#
      • 1...Rxc3
        • 2.Qf5#
      • 1...Bxc3
        • 2.Qc8#
      • 1...e5
        • 2.Qb4#
      • 1...e6
        • 2.Qb4#
      • 1...Rd2
        • 2.Qf5#
      • 1...Rf2
        • 2.Qc8#
      • 1...Be4
        • 2.Qc8#
      • 1...Bd5
        • 2.Qc8#
      • 1...Bc6
        • 2.Qf5#
      • 1...Bb7
        • 2.Qf5#
      • 1...Se3
        • 2.Qc8#
      • 1...Sh4
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::QAR(B)
    • R(b);S_CUTB(a)::QAR(B)
    • R(b);N_GUARD::QAR(B),XR(b)
    • B(a);N_GUARD::QAR(B)
    • B(a);S_CUTR(b)::QAR(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • B(e);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR1(B)
        • R(b);N_GUARD::QAR(B),XR(b)
      • Refutation
        • B(e);
  • Actual
    • S(A);
    • Threat
      • DUALS(2)
    • Vars
      • R(b);XS(A)::QAR(B)
      • B(a);XS(A)::QAR(B)
      • P(d);OGATEB::QAB(B)
      • R(b);::QAR(B)
      • B(e);P_PINB(C)::QAR(B)
      • B(e);::QAR(B)
      • S(c);::QAR(B)
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