MESON Chess Problem Database

Problem Display
PID: 40478 (R1NN3K/Ppk5/p7/8/1n1Q1P1B/2b4B/p1R5/1rqr4 w - - 0 1)

Auer, Ferenc

Recomm., BCF 028. Ty., 1938-1939

R1NN3K/Ppk5/p7/8/1n1Q1P1B/2b4B/p1R5/1rqr4

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Qe5#
      • 2.Qg7#
    • 1...Rg1
      • 2.Qe5#
    • 1...Rh1
      • 2.Qe5#
      • 2.Qg7#
    • 1...Sxc2
      • 2.Qxc3#
    • 1...Sd3
      • 2.Qg7#
    • 1...Sd5
      • 2.Qe5#
    • 1...Sc6
      • 2.Se6#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Se8#
        • 2.Rc8#
      • 1...Sd5
        • 2.Se8#
      • 1...Qe3
        • 2.Rc8#
      • 1...Re1
        • 2.Rc8#
      • 1...Rxd4!
    • 1.Rxc3+?
      • 1...Sc6
        • 2.Se6#
      • 1...Qxc3!
  • Keys
    • 1.Rb8!
      • threat
        • 2.Rxb7#
      • 1...Sxc2
        • 2.Qxc3#
      • 1...Sd3
        • 2.Qg7#
      • 1...Sd5
        • 2.Qe5#
      • 1...Sc6
        • 2.Se6#
      • 1...b5
        • 2.Rb7#
      • 1...b6
        • 2.Rb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD::QAB(C)
    • S(f);N_GUARD,N_SPINB(e),XR(A)::QAR(C),XB(e)
    • S(f);S_CUTR(c)::QAR(C)
    • S(f);S_CUTR(c)::QAB(C)
    • S(f);N_SPINB(e),SBLOCK::S(I)
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);::S(H)
        • Q(b);::R1(G)
        • R(c);::R1(G)
      • Refutation
        • R(c);XQ(C)
    • Try
      • R(A);CHECK,N_SPINQ(C),XB(e)
      • Vars
        • S(f);P_SPINS(f)::S(I)
      • Refutation
        • Q(b);P_PINQ(C),XR(A)
  • Actual
    • R(G);
    • Threat
      • R1(G),XP(h)
    • Vars
      • S(f);N_GUARD,N_SPINB(e),XR(A)::QAR(C),XB(e)
      • S(f);S_CUTR(c)::QAR(C)
      • S(f);S_CUTR(c)::QAB(C)
      • S(f);N_SPINB(e),SBLOCK::S(I)
      • P(h);::R1(G)
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