MESON Chess Problem Database

Problem Display
PID: 77595 (5b2/3r1NpK/B5n1/7Q/1PPkp1p1/3p2r1/2q4B/2RN4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

stern, 1994

5b2/3r1NpK/B5n1/7Q/1PPkp1p1/3p2r1/2q4B/2RN4

#2

9 + 10

6114 Problemschach-Jahrbuch (1994) 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc4
      • 2.Rxc4#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Rd6
      • 2.Qc5#
    • 1...Ra7
      • 2.Qd5#
    • 1...Rb7
      • 2.Qd5#
    • 1...Rc7
      • 2.Qd5#
    • 1...Re7
      • 2.Qc5#
      • 2.Qd5#
    • 1...Rxf7
      • 2.Qd5#
    • 1...Bc5
      • 2.Qxc5#
    • 1...Bd6
      • 2.Qd5#
    • 1...Sf4
      • 2.Qe5#
    • 1...Sh4
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Se7
      • 2.Qc5#
      • 2.Qe5#
    • 1...Sh8
      • 2.Qe5#
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qc5#
        • 2.Qd5#
      • 1...Qxd1
        • 2.Qc5#
      • 1...Qxh2
        • 2.Sb5#
      • 1...Qxc4
        • 2.Rxc4#
      • 1...Rxd6
        • 2.Qc5#
      • 1...Bxd6
        • 2.Qd5#
      • 1...d2
        • 2.Qd5#
      • 1...Rh3
        • 2.Sf5#
      • 1...Rc7
        • 2.Qd5#
      • 1...Sf4
        • 2.Qc5#
      • 1...Se5
        • 2.Sf5#
      • 1...Se7
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • Q(a);OGATE,XP(E)::R1(A),XQ(a)
    • R(h);N_GUARD::QAR1(F),XR(h)
    • R(h);S_CUTB(j)::QAB1(F)
    • R(h);N_GUARD::QAR1(F)
    • R(h);N_GUARD,XS(H)::QAR1(F)
    • B(j);N_GUARD::QAB1(F),XB(j)
    • B(j);S_CUTR(h)::QAR1(F)
    • S(g);N_GUARD::QAB1(F)
    • S(g);N_GUARD::QAB1(F),XS(g)
  • Actual
    • S(H);
    • Threat
      • DUALS(2)
    • Vars
      • Q(a);XS(B)::QAB1(F)
      • Q(a);P_PINQ(F),XB(C)::S(H)
      • Q(a);OGATE,XP(E)::R1(A),XQ(a)
      • R(h);XS(H)::QAB1(F)
      • B(j);XS(H)::QAR1(F)
      • P(b);::QAR1(F)
      • R(c);P_PINQ(F)::S(H)
      • R(h);::QAR1(F)
      • S(g);::QAB1(F)
      • S(g);SBLOCK::S(H)
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