MESON Chess Problem Database

Problem Display
PID: 205480 (3K4/8/2pkp3/pPR1RPp1/r5r1/3P4/3N4/3Q4 w - - 0 1)

Ehrmann, Willi

Badische Neueste Nachrichten, 1951

3K4/8/2pkp3/pPR1RPp1/r5r1/3P4/3N4/3Q4

#2

8 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4+?
      • 1...Rgxc4
        • 2.dxc4#
      • 1...Raxc4!
    • 1.Se4+?
      • 1...Raxe4
        • 2.dxe4#
      • 1...Rgxe4!
  • Keys
    • 1.d4!
      • threat
        • 2.Rxc6#
        • 2.Rxe6#
      • 1...Raxd4
        • 2.Sc4#
      • 1...Rgxd4
        • 2.Se4#
      • 1...cxb5
        • 2.Rxe6#
      • 1...exf5
        • 2.Rxc6#
      • 1...Rc4
        • 2.Sxc4#
        • 2.Rxe6#
      • 1...Re4
        • 2.Sxe4#
        • 2.Rxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • R(b);OGATE,XS(B)::QAR(A)+P(C),XR(b)
      • Refutation
        • R(a);XS(B)
    • Try
      • S(B);CHECK
      • Vars
        • R(a);OGATE,XS(B)::QAR(A)+P(C),XR(a)
      • Refutation
        • R(b);XS(B)
  • Actual
    • P(C);
    • Threat
      • DUALS(2)
    • Vars
      • R(a);N_GUARD,XP(C)::S(B)
      • R(b);N_GUARD,XP(C)::S(B)
      • P(e);XP(D)::R1(F),XP(g)
      • P(g);XP(G)::R1(E),XP(e)
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