MESON Chess Problem Database

Problem Display
PID: 157235 (3n1r1B/8/8/3n1b1R/2Ppk3/3p3r/3Q2N1/K3N3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Problemnoter, 1955

3n1r1B/8/8/3n1b1R/2Ppk3/3p3r/3Q2N1/K3N3

#2

7 + 8

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Qxd3#
    • 1...Rh2
      • 2.Qxd3#
    • 1...Rh4
      • 2.Qxd3#
    • 1...Rxh5
      • 2.Qxd3#
    • 1...Bg4
      • 2.Re5#
    • 1...Be6
      • 2.Re5#
    • 1...Bg6
      • 2.Re5#
    • 1...Bd7
      • 2.Re5#
    • 1...Bh7
      • 2.Re5#
    • 1...Bc8
      • 2.Re5#
    • 1...Sc3
      • 2.Qf4#
    • 1...Se3
      • 2.Qxd3#
    • 1...Sb4
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sb6
      • 2.Qf4#
    • 1...Sf6
      • 2.Qf4#
    • 1...Sc7
      • 2.Qf4#
    • 1...Se7
      • 2.Qf4#
  • Tries
    • 1.Rh4+?
      • 1...Rxh4
        • 2.Qxd3#
      • 1...Sf4
        • 2.Rxf4#
        • 2.Qxf4#
      • 1...Bg4!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qxd5#
      • 1...Be6
        • 2.Re5#
      • 1...Sc3
        • 2.Qe5#
      • 1...Se3
        • 2.Qe5#
      • 1...Sb4
        • 2.Qe5#
      • 1...Sf4
        • 2.Qe5#
      • 1...Sb6
        • 2.Qe5#
      • 1...Sf6
        • 2.Qxf5#
      • 1...Sc7
        • 2.Qe5#
      • 1...Se7
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 8
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • R(b);N_GUARD,P_PINS(B)::QAB1(C),XP(a)
    • R(b);N_GUARD::QAB1(C),XP(a)
    • R(b);N_GUARD,XR(F)::QAB1(C),XP(a)
    • B(f);OGATE::R1(F)
    • S(e);N_GUARD::QAR1(C)
    • S(e);S_CUTR(b)::QAB1(C),XP(a)
    • S(e);N_GUARD::QAR1(C),XS(e)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • R(b);XR(F)::QAB1(C),XP(a)
      • Refutation
        • B(f);P_SPINB(f)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C),XS(e)
    • Vars
      • B(f);OGATE::R1(F)
      • S(e);OGATE::QAR1(C)
      • S(e);OGATE::QAB1(C),XB(f)
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