MESON Chess Problem Database

Problem Display
PID: 275879 (2K5/8/1Q4N1/p2kNpR1/r3p3/p6b/2n1B2b/2R3r1 w - - 0 1)

de Nas, A

Probleemblad, 1953

2K5/8/1Q4N1/p2kNpR1/r3p3/p6b/2n1B2b/2R3r1

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4+
      • 2.Bxc4#
    • 1...Rd4
      • 2.Qc6#
    • 1...Bxe5
      • 2.Se7#
    • 1...Sb4
      • 2.Bc4#
    • 1...Sd4
      • 2.Rc5#
    • 1...f4+
      • 2.Sg4#
  • Tries
    • 1.Kd7?
      • threat
        • 2.Qd6#
      • 1...f4+
        • 2.Sg4#
      • 1...Bxe5
        • 2.Se7#
      • 1...e3!
    • 1.Rd1+?
      • 1...Rd4
        • 2.Bc4#
        • 2.Qc6#
      • 1...Sd4
        • 2.Qc6#
      • 1...Rxd1!
    • 1.Qc5+?
      • 1...Ke6
        • 2.Qc6#
      • 1...Kxc5!
    • 1.Qb5+?
      • 1...Kd6
        • 2.Qc6#
      • 1...Ke6
        • 2.Qc6#
      • 1...Kd4!
  • Keys
    • 1.Ba6!
      • threat
        • 2.Bb7#
      • 1...Rc4+
        • 2.Bxc4#
      • 1...f4+
        • 2.Sg4#
      • 1...Bxe5
        • 2.Se7#
      • 1...Sb4
        • 2.Bc4#
      • 1...Sd4
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(f);CHECK,N_GUARD::B(B),XR(f)
    • R(f);SBLOCK::QAB1(E)
    • B(c);SBLOCK,XS(C)::S(F)
    • S(b);S_CUTR(f)::B(B)
    • S(b);OGATE,SBLOCK::R1(A)
    • P(j);CHECK::R(D)+S(C)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • QAR1(E)
      • Vars
        • P(j);CHECK::R(D)+S(C)
        • B(c);SBLOCK,XS(C)::S(F)
      • Refutation
        • P(g);
    • Try
      • R(A);CHECK
      • Vars
        • S(b);P_SPINS(b)::QAB1(E)
      • Refutation
        • R(a);XR(A)
    • Try
      • Q(E);CHECK
      • Vars
        • K(i);N_GUARD,S_FLIGHT::QAR2(E)
      • Refutation
        • K(i);P-FLIGHT,P_SPINS(b),XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(i);N_GUARD,P-FLIGHT::QAR1(E)
        • K(i);N_GUARD,S_FLIGHT::QAR2(E)
      • Refutation
        • K(i);P-FLIGHT
  • Actual
    • B(B);
    • Threat
      • B(B)
    • Vars
      • R(f);CHECK,N_GUARD::B(B),XR(f)
      • P(j);CHECK::R(D)+S(C)
      • B(c);SBLOCK,XS(C)::S(F)
      • S(b);S_CUTR(f)::B(B)
      • S(b);OGATE,SBLOCK::R1(A)
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Developed and maintained by Brian Stephenson.
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