MESON Chess Problem Database

Problem Display
PID: 49371 (2R2B1K/r5p1/8/bPPkNP1Q/1pp5/1r5n/1nN5/1B2R3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

3rd Prize, Tidskrift for Schack, 1948

2R2B1K/r5p1/8/bPPkNP1Q/1pp5/1r5n/1nN5/1B2R3

#2

11 + 9

461 Schach-Express 1949
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.Qxf3#
    • 1...Rf7
      • 2.Qxf7#
    • 1...Ra8
      • 2.Qf7#
    • 1...Bc7
      • 2.Qf7#
    • 1...Sd3
      • 2.Qf3#
    • 1...c3
      • 2.Qf3#
  • Tries
    • 1.Rd8+?
      • 1...Rd7
        • 2.Rxd7#
        • 2.Qf7#
      • 1...Bxd8!
    • 1.Qg4?
      • threat
        • 2.Qd4#
        • 2.Qe4#
      • 1...Re3
        • 2.Qd4#
      • 1...Rd3
        • 2.Qe4#
      • 1...Sf2
        • 2.Qd4#
      • 1...Sg5
        • 2.Qd4#
      • 1...Sf4!
    • 1.Qh4?
      • threat
        • 2.Qd4#
        • 2.Qe4#
      • 1...Re3
        • 2.Qd4#
      • 1...Rd3
        • 2.Qe4#
      • 1...Sf2
        • 2.Qd4#
      • 1...Sg5
        • 2.Qd4#
      • 1...Sf4!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Re5#
      • 1...Re3
        • 2.Sxe3#
      • 1...Re7
        • 2.Sxe7#
      • 1...c3
        • 2.Se3#
      • 1...Bc7
        • 2.Qf7#
      • 1...Sd3
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::QAB(H),XR(b)
    • R(h);N_GUARD::QAB(H),XR(h)
    • R(h);N_GUARD::QAB(H)
    • B(f);S_CUTR(h)::QAB(H)
    • S(a);S_CUTR(b)::QAB(H)
    • P(e);S_CUTR(b)::QAB(H)
  • Tries
    • Try
      • R(I);CHECK
      • Refutation
        • B(f);XR(I)
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR1(H)
        • R(b);::QAB1(H)
        • S(c);::QAR1(H)
      • Refutation
        • S(c);
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR1(H)
        • R(b);::QAB1(H)
        • S(c);::QAR1(H)
      • Refutation
        • S(c);
  • Actual
    • S(F);
    • Threat
      • R1(B)
    • Vars
      • R(b);N_GUARD::S(C),XR(b)
      • R(h);N_GUARD::S(F),XR(h)
      • P(e);S_CUTR(b)::S(C)
      • B(f);S_CUTR(h)::QAB(H)
      • S(a);S_CUTR(b)::QAB(H)
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