MESON Chess Problem Database

Problem Display
PID: 157248 (7R/5Bkp/4R3/2B2K2/8/8/8/8 w - - 0 1)

Speckmann, Werner

Schach-Echo, 1939

7R/5Bkp/4R3/2B2K2/8/8/8/8

#2

5 + 2

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf7
      • 2.Re7#
    • 1...Kxh8
      • 2.Bd4#
  • Tries
    • 1.Bf8+?
      • 1...Kxf7
        • 2.Re7#
      • 1...Kxh8!
    • 1.Rg6+?
      • 1...Kxf7
        • 2.Rf8#
      • 1...Kxh8
        • 2.Bd4#
        • 2.Rg8#
      • 1...hxg6+!
    • 1.Re7?
      • 1...Kxh8
        • 2.Bd4#
      • 1...h5
        • 2.Bd4#
      • 1...h6
        • 2.Bd4#
      • 1...Kh6!
  • Keys
    • 1.Rh6!
      • threat
        • 2.R6xh7#
        • 2.R8xh7#
      • 1...Kxh6
        • 2.Bf8#
      • 1...Kxf7
        • 2.R6xh7#
      • 1...Kxh8
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,P-FLIGHT,XB(D)::R1(C)
    • K(a);S_FLIGHT,XR(E)::B(A)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(D)::R1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(E)
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(D)::R1(E)
      • Refutation
        • P(b);CHECK,XR(C)
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT,XR(E)::B(A)
        • P(b);::B(A)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • R(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P_SPINP(b),S_FLIGHT,XR(C)::B(A)
      • K(a);P-FLIGHT,XB(D)::R(C),XP(b)
      • K(a);P_SPINP(b),S_FLIGHT,XR(E)::B(A)
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