MESON Chess Problem Database

Problem Display
PID: 272963 (1R6/n1B5/7R/2k5/pp2K3/1P1P2p1/P4b2/8 w - - 0 1)

Seidemann, Felix

Die Schwalbe, 1932

1R6/n1B5/7R/2k5/pp2K3/1P1P2p1/P4b2/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.d4#
    • 1...Sb5
      • 2.Bb6#
    • 1...Sc6
      • 2.Bd6#
  • Tries
    • 1.Ba5?
      • threat
        • 2.Bxb4#
      • 1...Be1
        • 2.d4#
      • 1...Sb5
        • 2.Bb6#
      • 1...Sc6!
    • 1.Rb5+?
      • 1...Sxb5
        • 2.Bb6#
      • 1...Kxb5!
    • 1.bxa4?
      • threat
        • 2.Bb6#
      • 1...Sc8
        • 2.Rb5#
      • 1...b3!
  • Keys
    • 1.a3!
      • threat
        • 2.axb4#
      • 1...bxa3
        • 2.b4#
      • 1...Be1
        • 2.d4#
      • 1...Sb5
        • 2.Bb6#
      • 1...Sc6
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::P(C)
    • S(f);SBLOCK::B(F)
  • Tries
    • Try
      • B(F);
      • Threat
        • B(F),XP(d)
      • Vars
        • B(a);N_GUARD::P(C)
        • S(f);SBLOCK::B(F)
      • Refutation
        • S(f);
    • Try
      • R(G);CHECK
      • Vars
        • S(f);SBLOCK,XR(G)::B(F)
      • Refutation
        • K(e);P-FLIGHT,XR(G)
    • Try
      • P(B);XP(c)
      • Threat
        • B(F)
      • Vars
        • S(f);N_GUARD::R1(G)
      • Refutation
        • P(d);
  • Actual
    • P(A);
    • Threat
      • P(A),XP(d)
    • Vars
      • P(d);OGATE,XP(A)::P(B)
      • B(a);N_GUARD::P(C)
      • S(f);SBLOCK::B(F)
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