MESON Chess Problem Database

Problem Display
PID: 206943 (5b2/3P2p1/4k3/5RK1/2N1B3/B2n2p1/5p2/r7 w - - 0 1)

Morgenstern, L

Schachzeitung, 1858

5b2/3P2p1/4k3/5RK1/2N1B3/B2n2p1/5p2/r7

#2

6 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.d8Q?
      • threat
        • 2.Bd5#
        • 2.Qd5#
        • 2.Qc8#
      • 1...Be7+
        • 2.Qxe7#
      • 1...Rxa3
        • 2.Bd5#
      • 1...Bxa3
        • 2.Bd5#
      • 1...Bb4
        • 2.Bd5#
      • 1...Bc5
        • 2.Bd5#
      • 1...Bd6
        • 2.Bd5#
        • 2.Qxd6#
      • 1...Sf4
        • 2.Qc8#
      • 1...Sc5
        • 2.Bd5#
      • 1...Se5
        • 2.Bd5#
        • 2.Qd5#
      • 1...Sb4!
  • Keys
    • 1.Rf7!
      • threat
        • 2.d8S#
      • 1...Be7+
        • 2.Rxe7#
      • 1...Kxf7
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(F);
      • Threat
        • DUALS(3)
      • Vars
        • B(g);CHECK,N_GUARD::QAR1(F),XB(g)
        • R(a);XB(A)::B(C)
        • B(g);XB(A)::B(C)
        • B(g);::B(C)
        • S(c);::QAB(F)
        • S(c);::B(C)
      • Refutation
        • S(c);
  • Actual
    • R(D);
    • Threat
      • P=S
    • Vars
      • B(g);CHECK,N_GUARD::R1(D),XB(g)
      • K(e);S_FLIGHT,XR(D)::B(C)
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