MESON Chess Problem Database

Problem Display
PID: 73712 (K4B2/1Qp1n2q/4pR1N/3Nk1P1/3p3R/8/3pr3/8 w - - 0 1)

Rietveld, Johannes Jacob

Tijdschrift vd KNSB, 1938

K4B2/1Qp1n2q/4pR1N/3Nk1P1/3p3R/8/3pr3/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sf7#
    • 1...Qc2
      • 2.Sf7#
    • 1...Qd3
      • 2.Sf7#
    • 1...Qe4
      • 2.Sf7#
    • 1...Qf5
      • 2.Sf7#
    • 1...Qf7
      • 2.Sxf7#
    • 1...Qh8
      • 2.Sf7#
    • 1...exd5
      • 2.Qxc7#
  • Tries
    • 1.Sxe7?
      • threat
        • 2.Qxc7#
      • 1...Kd6
        • 2.Qd5#
      • 1...Qc2
        • 2.Sf7#
      • 1...Qe4
        • 2.Sf7#
      • 1...c5
        • 2.Qc7#
        • 2.Qb8#
      • 1...c6
        • 2.Qc7#
        • 2.Qb8#
      • 1...Qxe7!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qxc7#
      • 1...Kd6
        • 2.Qd5#
      • 1...Qc2
        • 2.Sf7#
      • 1...Qe4
        • 2.Sf7#
      • 1...Sd5
        • 2.Sc6#
      • 1...Sf5
        • 2.Sd3#
      • 1...Sc6
        • 2.Qb5#
      • 1...Sg6
        • 2.Sd3#
        • 2.Sg4#
      • 1...Sc8
        • 2.Sg4#
      • 1...Sg8
        • 2.Sg4#
      • 1...c5
        • 2.Qc7#
        • 2.Qb8#
      • 1...c6
        • 2.Qc7#
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • Q(h);N_GUARD::S(E)
    • Q(h);N_GUARD::S(E),XQ(h)
    • Q(h);N_GUARD,P_PINB(H)::S(E)
    • P(e);SBLOCK,XS(B)::QAB(F),XP(f)
  • Tries
    • Try
      • S(B);XS(g)
      • Threat
        • QAB(F),XP(f)
      • Vars
        • K(d);P_SPINP(e),S_FLIGHT::QAR1(F)
        • Q(h);N_GUARD::S(E)
        • Q(h);N_GUARD,P_PINQ(F)::S(E)
      • Refutation
        • Q(h);XS(B)
  • Actual
    • S(B);
    • Threat
      • QAB(F),XP(f)
    • Vars
      • K(d);P_SPINP(e),P_SPINS(g),S_FLIGHT::QAR1(F)
      • Q(h);N_GUARD::S(E)
      • Q(h);N_GUARD,P_PINQ(F)::S(E)
      • S(g);N_GUARD,SBLOCK::S(B)
      • S(g);S_CUTQ(h)::S(B)
      • S(g);N_GUARD,S_CUTP(f)::QAR(F)
      • S(g);::S(E)
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