MESON Chess Problem Database

Problem Display
PID: 145876 (5Q1B/KBp3r1/nN6/R2nk1r1/5Np1/2PPq1P1/8/4R1bb w - - 0 1)

Monteiro da Silveira, ?

L'Italia Scacchistica, 1933

(First published on Fri Sep 15 1933)

5Q1B/KBp3r1/nN6/R2nk1r1/5Np1/2PPq1P1/8/4R1bb

#2

11 + 10

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Rxd5#
    • 1...Rf5
      • 2.Qe7#
    • 1...Rh5
      • 2.Bxg7#
    • 1...Sc5
      • 2.Sc4#
    • 1...c5
      • 2.Sc4#
      • 2.Sd7#
  • Tries
    • 1.Ka8?
      • threat
        • 2.Sc4#
        • 2.Sd7#
      • 1...Sc5
        • 2.Sc4#
      • 1...Sb8
        • 2.Sc4#
      • 1...cxb6!
    • 1.Rxe3+?
      • 1...Be4
        • 2.Sc4#
        • 2.Sd7#
        • 2.Rxe4#
        • 2.Rxd5#
        • 2.d4#
      • 1...Bxe3!
    • 1.Rc5?
      • threat
        • 2.Sc4#
        • 2.Sd7#
      • 1...Sxc5
        • 2.Sc4#
      • 1...Sb8
        • 2.Sc4#
      • 1...cxb6!
    • 1.Qxg7+?
      • 1...Kf5
        • 2.Qf6#
        • 2.Qf8#
        • 2.Qf7#
      • 1...Kd6
        • 2.Qd7#
      • 1...Rxg7!
  • Keys
    • 1.Bc8!
      • threat
        • 2.Qe7#
      • 1...c5+
        • 2.Sd7#
      • 1...Rg6
        • 2.Sxg6#
      • 1...Sc5
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(c);S_CUTB(b)::R1(F),XS(e)
    • R(g);SBLOCK::QAR2(J)
    • R(g);N_GUARD::B(K),XR(j)
    • S(h);N_PINS(G),N_SPINS(e)::S(G)
  • Tries
    • Try
      • K(H);N_SPINS(G),P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(h);N_SPINS(e)::S(G)
        • S(h);::S(G)
      • Refutation
        • P(i);XS(G)
    • Try
      • R(A);CHECK,N_SPINS(G),XQ(c)
      • Refutation
        • B(a);P_PINS(G),XR(A)
    • Try
      • R(F);N_SPINS(G)
      • Threat
        • DUALS(2)
      • Vars
        • S(h);N_SPINS(e),XR(F)::S(G)
        • S(h);::S(G)
      • Refutation
        • P(i);P_PINB(I),XS(G)
    • Try
      • Q(J);CHECK,XR(j)
      • Vars
        • K(f);N_SPINQ(c),N_SPINS(e),S_FLIGHT::QAR1(J)
      • Refutation
        • R(g);P_SPINR(g),XQ(J)
  • Actual
    • B(I);
    • Threat
      • QAR2(J)
    • Vars
      • P(i);CHECK,N_PINS(G),N_SPINS(e)::S(G)
      • R(g);N_GUARD::S(E),XR(g)
      • S(h);N_PINS(G),N_SPINS(e)::S(G)
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