MESON Chess Problem Database

Problem Display
PID: 160181 (7Q/8/8/B2K3B/3R4/1PN1R3/p1k5/rb6 w - - 0 1)

Speckmann, Werner

Die Schwalbe, 1948

7Q/8/8/B2K3B/3R4/1PN1R3/p1k5/rb6

#2

8 + 4

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Sb5?
      • threat
        • 2.Rc4#
      • 1...Kb2
        • 2.Rc4#
      • 1...Kc1!
    • 1.Re2+?
      • 1...Kc1
        • 2.Rd1#
        • 2.Qh6#
      • 1...Kxb3!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Sd1#
        • 2.Sxa2#
        • 2.Sa4#
        • 2.Se4#
        • 2.Sb5#
      • 1...Kc1
        • 2.Sxa2#
      • 1...Kb2
        • 2.Sb5#
      • 1...Kd2
        • 2.Sd1#
      • 1...Kxb3
        • 2.Sxb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • R(D)
      • Vars
        • K(d);P-FLIGHT::QAB(H)+R(D)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • R(C);CHECK
      • Refutation
        • K(d);S_FLIGHT,XP(A)
  • Actual
    • R(D);
    • Threat
      • DUALS(5)
    • Vars
      • K(d);P-FLIGHT::R(D)+S(B),DCHECK,XP(c)
      • K(d);P-FLIGHT::QAB(H)+S(B)
      • K(d);P-FLIGHT::B(E)+S(B)
      • K(d);S_FLIGHT,XP(A)::R(C)+S(B),XB(b)
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