MESON Chess Problem Database

Problem Display
PID: 214073 (6b1/b7/2B2P2/4Nk1p/R3N1R1/7p/1BQ2P2/7K w - - 0 1)

Droysen, W

Deutsche Schachzeitung, 1882

6b1/b7/2B2P2/4Nk1p/R3N1R1/7p/1BQ2P2/7K

#2

10 + 5

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bh7
      • 2.Bd7#
  • Tries
    • 1.Rf4+?
      • 1...Ke6
        • 2.Qb3#
        • 2.Qc4#
      • 1...Kxf4!
    • 1.Rg5+?
      • 1...Ke6
        • 2.Qb3#
        • 2.Qc4#
      • 1...Kf4!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sc5#
        • 2.Seg5#
        • 2.Bd7#
      • 1...Kxg4
        • 2.Sc5#
      • 1...Ke6
        • 2.Seg5#
      • 1...Bxf7
        • 2.Sc5#
        • 2.Sg5#
      • 1...hxg4
        • 2.Sc5#
        • 2.Seg5#
      • 1...Bd4
        • 2.Bd7#
      • 1...Bc5
        • 2.Sxc5#
        • 2.Seg5#
        • 2.Bd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(e);N_GUARD::B(I)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • K(b);P-FLIGHT,XR(G)
    • Try
      • R(G);CHECK
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(H);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);S_FLIGHT,XR(G)::R(E)+S(F)
      • K(b);S_FLIGHT::S(F)
      • B(d);::B(I)
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