MESON Chess Problem Database

Problem Display
PID: 115179 (3B2R1/4p3/q6p/3QNp2/3b1k2/5Pp1/2N1n1K1/8 w - - 0 1)

Bylevski, Aleksandr

Boletim da UBP, 1992

3B2R1/4p3/q6p/3QNp2/3b1k2/5Pp1/2N1n1K1/8

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Sxd3#
    • 1...Qb7
      • 2.Sd3#
    • 1...Qc8
      • 2.Sd3#
    • 1...Qa1
      • 2.Sd3#
    • 1...Qa2
      • 2.Sd3#
    • 1...Qa4
      • 2.Sd3#
    • 1...Qa5
      • 2.Sd3#
    • 1...Qb6
      • 2.Sd3#
    • 1...Qc6
      • 2.Sd3#
    • 1...Qd6
      • 2.Sd3#
    • 1...Qe6
      • 2.Sd3#
    • 1...Qf6
      • 2.Sd3#
    • 1...Qa7
      • 2.Sd3#
    • 1...Qa8
      • 2.Sd3#
    • 1...Bxe5
      • 2.Qd2#
    • 1...Sc1
      • 2.Qxd4#
    • 1...Sg1
      • 2.Qxd4#
    • 1...e6
      • 2.Sg6#
  • Tries
    • 1.Bc7?
      • threat
        • 2.Sd3#
      • 1...Bxe5
        • 2.Bxe5#
        • 2.Qd2#
        • 2.Qxe5#
      • 1...Qd3
        • 2.Sxd3#
      • 1...Qg6!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Sd3#
      • 1...Bxe5
        • 2.Qd2#
      • 1...exd6
        • 2.Sg6#
      • 1...Qd3
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 16
  • Sets
    • Q(f);N_GUARD::S(E),XQ(f)
    • Q(f);N_GUARD::S(E)
    • B(c);OGATE,SBLOCK,XS(E)::QAB(D)
    • S(a);N_GUARD::QAR2(D),XB(c)
    • P(h);S_CUTQ(f)::S(E)
  • Tries
    • Try
      • B(F);
      • Threat
        • B(F)+S(E),DCHECK
      • Vars
        • Q(f);::B(F)+S(E),DCHECK,XQ(f)
      • Refutation
        • Q(f);
  • Actual
    • Q(D);
    • Threat
      • QAB(D)+S(E),DCHECK
    • Vars
      • B(c);OGATE,P_SPINB(c),SBLOCK,XS(E)::QAB(D)
      • P(h);XQ(D)::S(E)
      • Q(f);::QAB(D)+S(E),DCHECK,XQ(f)
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