MESON Chess Problem Database

Problem Display
PID: 164710 (B7/1R6/2R3p1/3r2B1/4n2K/4pkpN/2Q3bb/8 w - - 0 1)

Hartong, Jan

Niemeijer, Meindert

Die Schwalbe, 1969

B7/1R6/2R3p1/3r2B1/4n2K/4pkpN/2Q3bb/8

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Sxg1#
  • Tries
    • 1.Rc3?
      • threat
        • 2.Rxe3#
      • 1...Rxg5
        • 2.Qd1#
      • 1...Sxc3
        • 2.Rf7#
      • 1...Rd3
        • 2.Rf7#
      • 1...Bg1
        • 2.Sxg1#
      • 1...Sxg5!
    • 1.Rf7+?
      • 1...Sf6
        • 2.Rcxf6#
      • 1...Rf5!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Rxe3#
      • 1...Rxg5
        • 2.Qd1#
      • 1...Sxg5
        • 2.Rf6#
      • 1...Rd3
        • 2.Rf6#
      • 1...Bg1
        • 2.Sxg1#
      • 1...Sc3
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD::S(B),XB(b)
  • Tries
    • Try
      • R(E);P_PINP(c)
      • Threat
        • R1(E),XP(c)
      • Vars
        • R(g);N_GUARD,XB(D)::QAB(A)
        • S(f);N_GUARD,N_SPINP(c),S_CUTR(g),XR(E)::R(F)
        • R(g);N_GUARD,N_SPINP(c),S_CUTS(f)::R(F)
        • B(b);N_GUARD::S(B),XB(b)
      • Refutation
        • S(f);XB(D)
    • Try
      • R(F);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f),S_CUTR(g)::R(E),XS(f)
      • Refutation
        • R(g);P_SPINR(g)
  • Actual
    • R(F);P_PINP(c)
    • Threat
      • R1(F),XP(c)
    • Vars
      • R(g);N_GUARD,XB(D)::QAB(A)
      • S(f);N_GUARD,S_CUTR(g),XB(D)::R(E)
      • R(g);N_GUARD,N_SPINP(c),S_CUTS(f)::R(E)
      • B(b);N_GUARD::S(B),XB(b)
      • S(f);N_GUARD,N_SPINP(c),S_CUTR(g)::R(E)
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