MESON Chess Problem Database

Problem Display
PID: 238676 (6n1/3p4/pK2n3/3N1Q2/1P1kpp2/p3N3/1r1PP3/B2R3q w - - 0 1)

Ahues, Herbert Siegfried Oskar

idee & form, 1996

6n1/3p4/pK2n3/3N1Q2/1P1kpp2/p3N3/1r1PP3/B2R3q

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sf6
      • 2.Qxf6#
    • 1...Sh6
      • 2.Qf6#
    • 1...Se7
      • 2.Qf6#
    • 1...a2
      • 2.Bxb2#
  • Tries
    • 1.Sxf4?
      • threat
        • 2.Qd5#
      • 1...Sxf4
        • 2.Qc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Se7
        • 2.Qf6#
      • 1...d5
        • 2.Sxe6#
        • 2.Qxd5#
      • 1...Qh5!
    • 1.Sf6?
      • threat
        • 2.Qd5#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Qh5
        • 2.Qxe4#
      • 1...Sc7
        • 2.Qc5#
      • 1...d5
        • 2.Qxd5#
      • 1...Se7!
    • 1.Sc7?
      • threat
        • 2.Qd5#
      • 1...Sxc7
        • 2.Qc5#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Se7
        • 2.Qf6#
      • 1...d5
        • 2.Sxe6#
        • 2.Qxd5#
      • 1...Qh5!
    • 1.Se7?
      • threat
        • 2.Qd5#
      • 1...Sxe7
        • 2.Qf6#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sf6
        • 2.Qxf6#
      • 1...d5
        • 2.Sc6#
        • 2.Qxd5#
      • 1...Qh5!
    • 1.Rc1?
      • threat
        • 2.Rc4#
      • 1...fxe3
        • 2.dxe3#
      • 1...Qxc1!
    • 1.d3?
      • threat
        • 2.Sc2#
      • 1...Qxd1
        • 2.Qxe4#
      • 1...exd3
        • 2.Rxd3#
      • 1...fxe3!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qd5#
      • 1...Rxb4+
        • 2.Sb5#
      • 1...Rxd2
        • 2.Scd5#
      • 1...Qh5
        • 2.Qxe4#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Se7
        • 2.Qf6#
      • 1...d5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(j);N_GUARD::QAB(H),XS(j)
    • S(j);N_GUARD::QAB(H)
    • P(c);N_GUARD::B(A),XR(b)
  • Tries
    • Try
      • S(G);XP(f)
      • Threat
        • QAR1(H)
      • Vars
        • S(h);N_GUARD,XS(G)::QAB1(H)
        • S(h);N_GUARD::QAB1(H)
        • S(j);N_GUARD::QAB(H),XS(j)
        • S(j);N_GUARD::QAB(H)
      • Refutation
        • Q(a);
    • Try
      • S(G);
      • Threat
        • QAR1(H)
      • Vars
        • S(j);OGATE,XS(G)::QAB(H),XS(j)
        • Q(a);N_GUARD::QAR1(H),XP(e)
        • S(h);N_GUARD::QAB1(H)
        • P(i);::QAR1(H),XP(i)
      • Refutation
        • S(j);
    • Try
      • S(G);
      • Threat
        • QAR1(H)
      • Vars
        • S(h);N_GUARD,XS(G)::QAB1(H)
        • S(j);N_GUARD::QAB(H),XS(j)
        • S(j);N_GUARD::QAB(H)
      • Refutation
        • Q(a);
    • Try
      • S(G);
      • Threat
        • QAR1(H)
      • Vars
        • S(j);N_GUARD,XS(G)::QAB(H)
        • S(h);N_GUARD::QAB1(H)
        • S(j);N_GUARD::QAB(H),XS(j)
      • Refutation
        • Q(a);
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • P(f);OGATE,XS(E)::P(C),XP(f)
      • Refutation
        • Q(a);XR(B)
    • Try
      • P(C);
      • Threat
        • S(E)
      • Vars
        • Q(a);N_GUARD,XR(B)::QAR1(H),XP(e)
        • P(e);OGATE,P_SPINP(e),XP(C)::R1(B),XP(e)
      • Refutation
        • P(f);XS(E)
  • Actual
    • S(G);N_PINR(b)
    • Threat
      • QAR1(H)
    • Vars
      • R(b);CHECK,XP(F)::B(A)+S(G),DCHECK
      • R(b);N_PINP(F),P_SPINR(b),XP(C)::B(A)+S(G)
      • Q(a);N_GUARD::QAR1(H),XP(e)
      • S(h);N_GUARD::QAB1(H)
      • S(j);N_GUARD::QAB(H),XS(j)
      • S(j);N_GUARD::QAB(H)
      • P(i);::QAR1(H),XP(i)
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