MESON Chess Problem Database

Problem Display
PID: 212973 (8/3n4/7p/3N3k/bKQ3R1/5pPq/4n2P/8 w - - 0 1)

Bobrov, Pavel Pavlovich

Deutsche Schachzeitung, 1909

8/3n4/7p/3N3k/bKQ3R1/5pPq/4n2P/8

#2

6 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Sf6#
    • 1...Se5
      • 2.Sf6#
    • 1...Sb6
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sb8
      • 2.Sf6#
    • 1...Sf8
      • 2.Sf6#
  • Tries
    • 1.Qb5?
      • threat
        • 2.Sf6#
      • 1...Qxg4+
        • 2.Sf4#
      • 1...Kxg4
        • 2.Se3#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Bxb5!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Sf6#
      • 1...Qxg4+
        • 2.Sf4#
      • 1...Kxg4
        • 2.Se3#
      • 1...Sf6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(g);N_GUARD::S(F)
    • S(g);N_GUARD::S(F),XS(g)
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAR(D)+S(F),DCHECK
      • Vars
        • Q(c);CHECK,SBLOCK,XR(E)::QAR(D)+S(F),DCHECK
        • K(e);S_FLIGHT,XR(E)::S(F)
        • S(g);::QAR(D)+S(F),DCHECK,XS(g)
      • Refutation
        • B(d);XQ(D)
  • Actual
    • Q(D);
    • Threat
      • QAR(D)+S(F),DCHECK
    • Vars
      • Q(c);CHECK,SBLOCK,XR(E)::QAR(D)+S(F),DCHECK
      • K(e);S_FLIGHT,XR(E)::S(F)
      • S(g);::QAR(D)+S(F),DCHECK,XS(g)
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