MESON Chess Problem Database

Problem Display
PID: 64688 (1q4b1/b3P1r1/4N2n/1NQ1p3/R2pk1Pp/3p2PK/2r2P2/3B4 w - - 0 1)

Goldschmeding, Cornelis

1st Prize, Die Schwalbe, 1981

1q4b1/b3P1r1/4N2n/1NQ1p3/R2pk1Pp/3p2PK/2r2P2/3B4

#2

10 + 11

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Sxd6#
    • 1...Qb7
      • 2.Sd6#
    • 1...Qa8
      • 2.Sd6#
    • 1...Qc8
      • 2.Sd6#
    • 1...Qe8
      • 2.Sd6#
    • 1...Qf8
      • 2.Sd6#
    • 1...Ra2
      • 2.Sc3#
      • 2.Qc6#
    • 1...Rb2
      • 2.Sc3#
      • 2.Qc6#
    • 1...Rd2
      • 2.Sc3#
      • 2.Qc6#
    • 1...Re2
      • 2.Qc6#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Rg5
      • 2.Sxg5#
    • 1...Rxe7
      • 2.Sg5#
    • 1...Rf7
      • 2.Sg5#
    • 1...Rh7
      • 2.Sg5#
  • Tries
    • 1.Sexd4?
      • threat
        • 2.Bf3#
      • 1...Rxf2
        • 2.Se6#
      • 1...exd4
        • 2.Rxd4#
      • 1...d2
        • 2.Bxc2#
      • 1...Qf8
        • 2.Sd6#
      • 1...Re2
        • 2.Sc3#
      • 1...Rf7
        • 2.Sxc2#
      • 1...hxg3!
  • Keys
    • 1.Sbxd4!
      • threat
        • 2.Bf3#
      • 1...Rxf2
        • 2.Sb5#
      • 1...exd4
        • 2.Rxd4#
      • 1...d2
        • 2.Bxc2#
      • 1...Qf8
        • 2.Sxc2#
      • 1...Re2
        • 2.Qc6#
      • 1...Rf7
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(j);N_GUARD::S(G),XQ(j)
    • Q(j);N_GUARD::S(G)
    • R(a);N_GUARD::QAB(H)
    • R(a);N_GUARD::S(G),XR(a)
    • R(i);N_GUARD::S(I),XR(i)
    • R(i);N_GUARD,XP(J)::S(I)
    • R(i);N_GUARD::S(I)
  • Tries
    • Try
      • S(I);XP(c)
      • Threat
        • B(A)
      • Vars
        • R(a);N_GUARD,XP(B)::R(E)+S(I)
        • P(f);OGATE,P_SPINP(f),XS(I)::R1(E),XP(f)
        • P(b);OGATEB::B(A),XR(a)
        • Q(j);N_GUARD::S(G)
        • R(a);N_GUARD::S(G)
        • R(i);S_CUTB(k)::R(E)+S(I),XR(a)
      • Refutation
        • P(e);XP(C)
  • Actual
    • S(G);XP(c)
    • Threat
      • B(A)
    • Vars
      • R(a);N_GUARD,XP(B)::R(E)+S(G)
      • P(f);OGATE,P_SPINP(f),XS(G)::R1(E),XP(f)
      • P(b);OGATEB::B(A),XR(a)
      • Q(j);N_GUARD::R(E)+S(G),XR(a)
      • R(a);N_GUARD::QAB(H)
      • R(i);N_GUARD::S(I)
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