MESON Chess Problem Database

Problem Display
PID: 160219 (5r2/7n/1N1N4/R2B1pQ1/K2k4/b3R3/3Pn2p/5r2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Magyar Sakkelet, 1970

5r2/7n/1N1N4/R2B1pQ1/K2k4/b3R3/3Pn2p/5r2

#2

8 + 8

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.Sb5#
    • 1...Sc3+
      • 2.dxc3#
    • 1...f4
      • 2.Qe5#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Rd3#
        • 2.Rd5#
      • 1...Sc3+
        • 2.dxc3#
      • 1...Bxd6
        • 2.Rd5#
      • 1...h1Q
        • 2.Rd3#
      • 1...h1B
        • 2.Rd3#
      • 1...Rf3
        • 2.Rd5#
      • 1...Ra8
        • 2.Rd3#
      • 1...Bc5
        • 2.Sb5#
      • 1...Sc1
        • 2.Rd5#
      • 1...Sf6
        • 2.Rd3#
      • 1...Sf4!
    • 1.Rd3+?
      • 1...Ke5
        • 2.Sbc4#
        • 2.Sdc4#
      • 1...Kxd3!
    • 1.Qe7?
      • threat
        • 2.Sb5#
        • 2.Qe5#
      • 1...Sc3+
        • 2.dxc3#
      • 1...Rb1
        • 2.Qe5#
      • 1...Re8
        • 2.Sb5#
      • 1...Bxd6!
  • Keys
    • 1.Bf3!
      • threat
        • 2.Rd5#
      • 1...Sc3+
        • 2.dxc3#
      • 1...Ra8
        • 2.Sxf5#
      • 1...Bc5
        • 2.Sb5#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sf6
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(d);SBLOCK::S(H)
    • S(b);CHECK,OGATE::P(A),XS(b)
    • P(f);OGATE::QAB1(F)
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);CHECK,OGATE::P(A),XS(b)
        • B(d);XS(H)::R1(D)
        • P(c);::R1(B)
        • R(a);::R1(D)
        • R(h);P_PINR(D)::R1(B)
        • B(d);SBLOCK::S(H)
        • S(b);::R1(D)
        • S(g);::R1(B)
      • Refutation
        • S(b);
    • Try
      • R(B);CHECK
      • Refutation
        • K(e);P-FLIGHT,XR(B)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);CHECK,OGATE::P(A),XS(b)
        • R(a);::QAB1(F)
        • R(h);::S(H)
      • Refutation
        • B(d);XS(H)
  • Actual
    • B(E);
    • Threat
      • R1(D)
    • Vars
      • S(b);CHECK,OGATE::P(A),XS(b)
      • R(h);N_GUARD,P_PINR(D)::S(H),XP(f)
      • B(d);SBLOCK::S(H)
      • S(b);N_GUARD::QAR2(F),XS(b)
      • S(g);S_CUTR(h)::S(H),XP(f)
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