MESON Chess Problem Database

Problem Display
PID: 49149 (Q2B4/8/8/2p1kpN1/2n2N1P/4p2P/4p3/4K3 w - - 0 1)

Schuld, Henk L

Nederlandse Schaakbond, 1907

Q2B4/8/8/2p1kpN1/2n2N1P/4p2P/4p3/4K3

#2

7 + 6

204 Op de Hoogte 1907
3713 Snap 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qd5#
  • Tries
    • 1.Sf3+?
      • 1...Kd6
        • 2.Qd5#
      • 1...Kxf4!
    • 1.Sge6?
      • threat
        • 2.Qd5#
      • 1...Kd6
        • 2.Qd5#
      • 1...Sb6!
    • 1.Qe4+?
      • 1...Kd6
        • 2.Qd5#
        • 2.Qe6#
      • 1...fxe4!
  • Keys
    • 1.Qa4!
      • 1...Kd4
        • 2.Bf6#
      • 1...Kxf4
        • 2.Bc7#
      • 1...Kd6
        • 2.Sf7#
      • 1...Sb2
        • 2.Sf7#
      • 1...Sd2
        • 2.Sf7#
      • 1...Sa3
        • 2.Sf7#
      • 1...Sa5
        • 2.Sf7#
      • 1...Sb6
        • 2.Sf7#
      • 1...Sd6
        • 2.Sf3#

Anticipated by 154419(1900)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(e);S_FLIGHT::QAR1(F)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR1(F)
      • Refutation
        • K(e);S_FLIGHT,XS(C)
    • Try
      • S(E);
      • Threat
        • QAR1(F)
      • Vars
        • K(e);S_FLIGHT::QAR1(F)
      • Refutation
        • S(c);
    • Try
      • Q(F);CHECK
      • Refutation
        • P(f);XQ(F)
  • Actual
    • Q(F);
    • Vars
      • K(e);P_SPINS(c),S_FLIGHT::B(G)
      • K(e);P_SPINS(c),S_FLIGHT,XS(C)::B(G)
      • K(e);S_FLIGHT::S(E)
      • S(c);::S(E)
      • S(c);SBLOCK::S(E)
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