MESON Chess Problem Database

Problem Display
PID: 187263 (4R3/4N3/B1p1N1K1/4p2Q/nn2kP2/3pp3/2P3b1/1q6 w - - 0 1)

Ahues, Herbert Siegfried Oskar

3rd HM., Het Belgisch Schaakbord (L'Echiquier Belge), 1996-1997

4R3/4N3/B1p1N1K1/4p2Q/nn2kP2/3pp3/2P3b1/1q6

#2

8 + 9

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.Qxe5#
      • 2.Qf5#
    • 1...Sa2
      • 2.Bxd3#
    • 1...Sd5
      • 2.Bxd3#
  • Tries
    • 1.Sg5+?
      • 1...Kxf4
        • 2.Qh4#
      • 1...Kd4!
    • 1.Sg8?
      • threat
        • 2.Sf6#
      • 1...Kd5
        • 2.Qxe5#
      • 1...Sd5
        • 2.Bxd3#
      • 1...e2!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Qxe5#
      • 1...Kxf4
        • 2.Qh4#
      • 1...exd4
        • 2.Sd5#
      • 1...exf4
        • 2.Sexc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(f);N_GUARD::B(D),XP(c)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(g);P-FLIGHT,XP(B)::QAR2(C)
      • Refutation
        • K(g);P-FLIGHT
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • K(g);P_SPINP(h),S_FLIGHT::QAR1(C),XP(h)
        • S(f);N_GUARD,SBLOCK::B(D),XP(c)
      • Refutation
        • P(d);
  • Actual
    • S(E);
    • Threat
      • QAR1(C),XP(h)
    • Vars
      • K(g);P-FLIGHT,XS(E)::QAB1(C),XP(h)
      • K(g);OGATEB,P-FLIGHT,XP(B)::QAR2(C)
      • P(h);SBLOCK,XS(E)::R(H)+S(G)
      • P(h);SBLOCK,XP(B)::R(H)+S(G),XP(i)
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