MESON Chess Problem Database

Problem Display
PID: 10295 (8/KN2BB2/4p2p/R3nk2/3rr3/5P1N/b6Q/2b5 w - - 0 1)

Faria, Oswaldo

Problem (Zagreb), 1963

8/KN2BB2/4p2p/R3nk2/3rr3/5P1N/b6Q/2b5

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Sd6#
    • 1...Rb4
      • 2.Sd6#
    • 1...Rc4
      • 2.Sd6#
    • 1...Rd6
      • 2.Sxd6#
    • 1...Rg4
      • 2.Rxe5#
      • 2.Qxe5#
    • 1...Rh4
      • 2.Rxe5#
      • 2.Qxe5#
    • 1...Bd5
      • 2.Sd6#
  • Tries
    • 1.Qxa2?
      • threat
        • 2.Qxe6#
      • 1...Rc4
        • 2.Sd6#
      • 1...Rd6
        • 2.Sxd6#
      • 1...Rd5!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Bg6#
      • 1...Rxf4
        • 2.Qh5#
      • 1...Bxf4
        • 2.Qh3#
      • 1...Rd5
        • 2.Bxe6#
      • 1...Bd5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD,P_PINR(D)::S(F)
    • R(c);N_GUARD::S(F)
    • R(c);N_GUARD::S(F),XR(c)
    • B(b);N_SPINS(e),S_CUTR(c)::S(F)
  • Tries
    • Try
      • Q(A);XB(b)
      • Threat
        • QAB1(A),XP(g)
      • Vars
        • R(c);N_GUARD::S(F)
        • R(c);N_GUARD::S(F),XR(c)
      • Refutation
        • R(c);N_SPINS(e)
  • Actual
    • S(C);
    • Threat
      • B(H)
    • Vars
      • R(d);SBLOCK,XS(C)::QAR2(A)
      • B(a);SBLOCK,XS(C)::QAB(A)
      • R(c);N_SPINS(e),S_CUTB(b)::B(H),XP(g)
      • B(b);N_SPINS(e),S_CUTR(c)::S(F)
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