MESON Chess Problem Database

Problem Display
PID: 83798 (3NQ2q/B2b4/3p3r/3kn3/2NP2r1/1P6/B7/K1R1R3 w - - 0 1)

Degener, Udo

Reinhold, Frank

Wola Gulowska, 1993

3NQ2q/B2b4/3p3r/3kn3/2NP2r1/1P6/B7/K1R1R3

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Sb6#
    • 1...Bb5
      • 2.Qxb5#
    • 1...Bf5
      • 2.Qb5#
    • 1...Be6
      • 2.Qb5#
    • 1...Bc8
      • 2.Qb5#
    • 1...Sd3
      • 2.Se3#
    • 1...Sf3
      • 2.Se3#
    • 1...Sxc4
      • 2.bxc4#
    • 1...Sc6
      • 2.Se3#
    • 1...Sg6
      • 2.Se3#
    • 1...Sf7
      • 2.Se3#
  • Tries
    • 1.Bb1?
      • threat
        • 2.Se3#
      • 1...Sxc4
        • 2.bxc4#
      • 1...Rg3
        • 2.Be4#
      • 1...Re4
        • 2.Bxe4#
      • 1...Rh3!
    • 1.Bc5?
      • threat
        • 2.Sb6#
      • 1...Sxc4
        • 2.bxc4#
      • 1...dxc5!
  • Keys
    • 1.Rcd1!
      • threat
        • 2.Sb6#
      • 1...Rxd4
        • 2.Rxd4#
      • 1...Sxc4
        • 2.bxc4#
      • 1...Sd3
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • R(a);SBLOCK,XP(G)::S(F)
    • B(f);OGATE::QAR2(J),XB(f)
    • B(f);OGATE::QAR2(J)
    • S(c);P_PINP(G)::S(F)
    • S(c);OGATE,P_PINP(G),XS(F)::P(E),XS(c)
  • Tries
    • Try
      • B(D);
      • Threat
        • S(F)
      • Vars
        • S(c);OGATE,P_PINP(G),XS(F)::P(E),XS(c)
        • R(a);N_GUARD::B(D)
        • R(a);N_GUARD::B(D),XR(a)
      • Refutation
        • R(e);
    • Try
      • B(H);
      • Threat
        • S(F)
      • Vars
        • S(c);OGATE,P_PINP(G),XS(F)::P(E),XS(c)
      • Refutation
        • P(d);XB(H)
  • Actual
    • R(B);
    • Threat
      • S(F)
    • Vars
      • R(a);OGATE,P_SPINR(a),XP(G)::R1(B),XR(a)
      • S(c);OGATE,P_PINP(G),XS(F)::P(E),XS(c)
      • S(c);P_PINP(G)::S(F)
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