MESON Chess Problem Database

Problem Display
PID: 158409 (B2R4/1rpN4/q7/p1pN2Rp/2Pk3K/5pP1/3P1n2/5QBn w - - 0 1)

Ahues, Herbert Siegfried Oskar

2nd Prize, L'Italia Scacchistica, 1962

B2R4/1rpN4/q7/p1pN2Rp/2Pk3K/5pP1/3P1n2/5QBn

#2

11 + 10

23 Die Schwalbe 1965
15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4?
      • threat
        • 2.Qd3#
      • 1...Ke4
        • 2.Sxc5#
      • 1...Qg6
        • 2.Sf6#
      • 1...Rb3
        • 2.Sb6#
      • 1...Qxc4!
    • 1.Bxf2+?
      • 1...Ke4
        • 2.Sc3#
        • 2.Sxc5#
        • 2.Re5#
        • 2.d3#
      • 1...Sxf2!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qd3#
      • 1...Ke4
        • 2.Sc3#
      • 1...Qxc4
        • 2.Qxc4#
      • 1...Qg6
        • 2.Sf6#
      • 1...Rb3
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR1(A)
      • Vars
        • K(d);N_SPINS(b),P-FLIGHT,P_SPINR(i)::S(I),XP(f)
        • Q(h);N_GUARD::R(K)+S(I)
        • R(i);::R(K)+S(I)
      • Refutation
        • Q(h);XP(E)
    • Try
      • B(B);CHECK,XS(b)
      • Refutation
        • S(a);XB(B)
  • Actual
    • S(I);
    • Threat
      • QAR1(A)
    • Vars
      • K(d);N_SPINS(b),P-FLIGHT::S(G)
      • Q(h);OGATE,XP(E)::QAR1(A),XQ(h)
      • Q(h);N_GUARD::R(K)+S(G)
      • R(i);::R(K)+S(G)
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