MESON Chess Problem Database

Problem Display
PID: 241595 (rbN3K1/3p2p1/2R2Pn1/3B1k1p/2r2P2/5Q2/b7/B1qNR3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Magyar Sakkvilag, 1948

rbN3K1/3p2p1/2R2Pn1/3B1k1p/2r2P2/5Q2/b7/B1qNR3

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Se3#
    • 1...Qe3
      • 2.Sxe3#
    • 1...Qxa1
      • 2.Se3#
    • 1...Qb1
      • 2.Se3#
    • 1...Qc2
      • 2.Se3#
    • 1...Rxf4
      • 2.Qxh5#
    • 1...Sh4
      • 2.Se7#
    • 1...Se5
      • 2.Se7#
    • 1...Se7+
      • 2.Sxe7#
    • 1...Sf8
      • 2.Se7#
    • 1...Sh8
      • 2.Se7#
    • 1...dxc6
      • 2.Be6#
    • 1...d6
      • 2.Be6#
    • 1...gxf6
      • 2.Rxf6#
  • Tries
    • 1.Re5+?
      • 1...Sxe5
        • 2.Se7#
      • 1...Bxe5!
  • Keys
    • 1.Rg1!
      • threat
        • 2.Rg5#
      • 1...Se7+
        • 2.Sxe7#
      • 1...Qxf4
        • 2.Se3#
      • 1...Rxf4
        • 2.Qxh5#
      • 1...Bxf4
        • 2.Qh3#
      • 1...Sxf4
        • 2.Se7#
      • 1...gxf6
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 11
  • Sets
    • Q(a);N_GUARD::S(B)
    • Q(a);N_GUARD::S(B),XQ(a)
    • Q(a);N_GUARD,XB(A)::S(B)
    • R(c);P_PINB(F),P_SPINR(c),SBLOCK,XP(E)::QAR2(D),XP(e)
    • S(f);N_GUARD::S(I)
    • S(f);CHECK,N_GUARD::S(I),XS(f)
    • P(g);N_GUARD,XR(G)::B(F)
    • P(g);N_GUARD::B(F)
    • P(h);OGATE,XP(H)::R1(G),XP(h)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • S(f);XR(C)::S(I)
      • Refutation
        • B(j);P_PINS(I),XR(C)
  • Actual
    • R(C);
    • Threat
      • R1(C)
    • Vars
      • S(f);CHECK,N_GUARD::S(I),XS(f)
      • Q(a);N_GUARD,P_SPINQ(a),XP(E)::S(B)
      • R(c);P_PINB(F),P_SPINR(c),SBLOCK,XP(E)::QAR2(D),XP(e)
      • B(j);P_PINS(I),P_SPINB(j),SBLOCK,XP(E)::QAB(D)
      • S(f);N_GUARD,P_SPINS(f),XP(E)::S(I)
      • P(h);OGATE,XP(H)::R1(G),XP(h)
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