MESON Chess Problem Database

Problem Display
PID: 6312 (B2r4/3b4/p1P2p2/Q1Nk1P2/1n2R3/1PR3n1/p1prp3/K1B5 w - - 0 1)

Nietvelt, Gustaaf Josephus

1st Prize, Schackvarlden, 1928

B2r4/3b4/p1P2p2/Q1Nk1P2/1n2R3/1PR3n1/p1prp3/K1B5

#2

10 + 11

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1953

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Sb7#
    • 1...Bxc6
      • 2.Qxd8#
  • Tries
    • 1.Sxa6+?
      • 1...Kd6
        • 2.Qc5#
      • 1...Kxe4!
    • 1.Se6+?
      • 1...Kd6
        • 2.Qc5#
      • 1...Kxe4!
    • 1.Sxd7+?
      • 1...Kd6
        • 2.Re6#
      • 1...Kxe4!
  • Keys
    • 1.Rcc4!
      • threat
        • 2.Sb7#
      • 1...Kd6
        • 2.Sb7#
      • 1...Bxc6
        • 2.Qxd8#
      • 1...Sxe4
        • 2.Sxe4#
      • 1...Sxc6
        • 2.Qxd2#
      • 1...Rd4
        • 2.Rcxd4#
      • 1...Sd3
        • 2.Rcd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(g);P-FLIGHT::S(G)
    • B(j);OGATEB,P_SPINB(j),XP(I)::QAR(F),XR(k)
  • Tries
    • Try
      • S(G);CHECK,XP(h)
      • Vars
        • K(g);P-FLIGHT::QAB1(F)
      • Refutation
        • K(g);S_FLIGHT,XR(E)
    • Try
      • S(G);CHECK
      • Vars
        • K(g);P-FLIGHT::QAB1(F)
      • Refutation
        • K(g);S_FLIGHT,XR(E)
    • Try
      • S(G);CHECK,XB(j)
      • Vars
        • K(g);P-FLIGHT::R1(E)
      • Refutation
        • K(g);S_FLIGHT,XR(E)
  • Actual
    • R(D);
    • Threat
      • QAR(F)+S(G)
    • Vars
      • K(g);P-FLIGHT::S(G)
      • B(j);OGATEB,P_SPINB(j),XP(I)::QAR(F),XR(k)
      • S(e);XR(E)::QAR(F)+S(G),XS(e)
      • S(f);OGATE,P_SPINS(f),XP(I)::QAR(F),XR(c)
      • R(c);N_GUARD::R1(D),XR(c)
      • S(f);S_CUTR(c)::R1(D)
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