MESON Chess Problem Database

Problem Display
PID: 248969 (3B4/1B6/r1nnpN2/4kp2/p2p3K/3p3p/5P2/2QN1r2 w - - 0 1)

Willemson, Martin

Die Schwalbe, 1929

3B4/1B6/r1nnpN2/4kp2/p2p3K/3p3p/5P2/2QN1r2

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd1
      • 2.f4#
    • 1...Re1
      • 2.f4#
    • 1...Rg1
      • 2.f4#
    • 1...Rh1
      • 2.f4#
    • 1...Sb4
      • 2.Sd7#
    • 1...Sa5
      • 2.Sd7#
    • 1...Sa7
      • 2.Sd7#
    • 1...Se7
      • 2.Sd7#
    • 1...Sxd8
      • 2.Sd7#
    • 1...f4
      • 2.Qc5#
  • Keys
    • 1.Sb2!
      • threat
        • 2.Sxd3#
      • 1...Sxd8
        • 2.Sd7#
      • 1...Sxb7
        • 2.Sc4#
      • 1...Se7
        • 2.Sd7#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Se4
        • 2.Sc4#
      • 1...Sb5
        • 2.Sc4#
      • 1...Sf7
        • 2.Sc4#
      • 1...Sc8
        • 2.Sc4#
      • 1...Se8
        • 2.Sc4#
      • 1...d2
        • 2.Sd3#
      • 1...f4
        • 2.Qc5#
      • 1...Rd1
        • 2.f4#
      • 1...Sb4
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD,XS(B)::P(C)
    • R(a);N_GUARD::P(C)
    • S(i);::S(E)
    • S(i);XB(G)::S(E)
    • P(g);SBLOCK::QAR2(A)
  • Actual
    • S(B);
    • Threat
      • S(B),XP(b)
    • Vars
      • S(i);XB(G)::S(E)
      • S(j);N_GUARD,XB(F)::S(B)
      • S(i);::S(E)
      • S(j);N_GUARD::S(B),XS(j)
      • S(j);N_GUARD::S(B)
      • P(b);::S(B)
      • P(g);SBLOCK::QAR2(A)
      • R(a);N_GUARD::P(C)
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