MESON Chess Problem Database

Problem Display
PID: 143907 (8/8/2pp2K1/2nk4/1P2Np1R/P4BB1/8/2Q5 w - - 0 1)

Rudiger, F

Magasinet, 1931

(First published on Sun Sep 13 1931)

8/8/2pp2K1/2nk4/1P2Np1R/P4BB1/8/2Q5

#2

8 + 5

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Sxc5+?
      • 1...Ke5
        • 2.Qb2#
        • 2.Qe3#
        • 2.Qxf4#
        • 2.Qa1#
        • 2.Qc3#
      • 1...Kd4!
    • 1.Rh5+?
      • 1...Kd4
        • 2.Qc3#
      • 1...Ke6!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Bxf4#
        • 2.Rh5#
      • 1...Kxc4!
    • 1.Qxc5+?
      • 1...Ke6
        • 2.Qxd6#
      • 1...dxc5!
  • Keys
    • 1.Qe3!
      • 1...Kc4
        • 2.Sxd6#
      • 1...Ke5
        • 2.Sxc5#
      • 1...Ke6
        • 2.Sxc5#
      • 1...Sxe4
        • 2.Qxe4#
      • 1...fxe3
        • 2.Sxc5#
      • 1...fxg3
        • 2.Sc3#
        • 2.Sxc5#
        • 2.Sf6#
      • 1...Sb3
        • 2.Sd2#
      • 1...Sd3
        • 2.Sd2#
      • 1...Sa4
        • 2.Sd2#
      • 1...Sa6
        • 2.Sd2#
      • 1...Se6
        • 2.Sd2#
      • 1...Sb7
        • 2.Sd2#
      • 1...Sd7
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK,XS(b)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(a)
    • Try
      • R(G);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK,XS(b)
      • Vars
        • K(c);S_FLIGHT::QAR1(A),XP(e)
      • Refutation
        • P(e);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(c);S_FLIGHT::S(F),XP(e)
      • K(c);P-FLIGHT,P_SPINP(a)::QAR(A)+S(F),XS(b)
      • K(c);S_FLIGHT::QAR(A)+S(F),DCHECK,XS(b)
      • S(b);OGATE,P_SPINS(b),XS(F)::QAB1(A),XS(b)
      • P(a);XQ(A)::B(C)+S(F),XS(b)
      • S(b);N_GUARD::B(C)+S(F)
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