MESON Chess Problem Database

Problem Display
PID: 211342 (4r3/1np3B1/2Rn1PP1/4kNb1/4PNp1/2P5/2pQRPP1/2K5 w - - 0 1)

Janevski, Zivko

The Problemist, 1986

4r3/1np3B1/2Rn1PP1/4kNb1/4PNp1/2P5/2pQRPP1/2K5

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Sd3#
    • 1...Sc4
      • 2.Sd3#
    • 1...Sb5
      • 2.Sd3#
    • 1...Sxf5
      • 2.Sd3#
    • 1...Sf7
      • 2.Sd3#
    • 1...Sc8
      • 2.Sd3#
    • 1...Sa5
      • 2.Rc5#
    • 1...Sc5
      • 2.Rxc5#
    • 1...Sd8
      • 2.Rc5#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Sd3#
      • 1...Bxf4
        • 2.f7#
      • 1...Sc5
        • 2.Rxc5#
      • 1...Sxe4!
    • 1.Sxd6?
      • threat
        • 2.Sc4#
        • 2.Sf7#
      • 1...Sxd6
        • 2.Rc5#
      • 1...Re7
        • 2.Sc4#
      • 1...Rf8
        • 2.Sc4#
      • 1...Sa5
        • 2.Sf7#
        • 2.Rc5#
      • 1...Sd8
        • 2.Sc4#
        • 2.Rc5#
      • 1...cxd6!
    • 1.g3?
      • threat
        • 2.Qd4#
        • 2.Qd5#
      • 1...Sxe4
        • 2.Qd5#
      • 1...Sxf5
        • 2.Sd3#
        • 2.Qd5#
      • 1...Sb5
        • 2.Sd3#
        • 2.Qd5#
      • 1...Bxf4!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sxg4#
      • 1...Kxe4
        • 2.Qd4#
      • 1...Kxf4
        • 2.Sc4#
      • 1...Bxf4
        • 2.Qd5#
      • 1...Sxe4
        • 2.Sd3#
      • 1...g3
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • R(h);SBLOCK::S(H)
    • S(e);::S(H)
    • S(e);XS(I)::S(H)
    • S(f);N_GUARD::R(J)
    • S(f);N_GUARD::R(J),XS(f)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(H)
      • Vars
        • B(d);N_GUARD,P_PINQ(B),XS(H)::B(M)+P(K)
        • S(f);N_GUARD::R(J),XS(f)
      • Refutation
        • S(e);P_SPINS(e),XP(G)
    • Try
      • S(I);XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • S(f);N_GUARD,XS(I)::R(J)
        • R(h);::S(I)
      • Refutation
        • P(g);XS(I)
    • Try
      • P(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);P_SPINS(e),XP(G)::QAR1(B)
      • Refutation
        • B(d);P_PINQ(B),XS(H)
  • Actual
    • S(I);
    • Threat
      • S(I),XP(b)
    • Vars
      • K(c);P-FLIGHT,XP(G)::QAR1(B)
      • K(c);S_FLIGHT,XS(H)::QAB(B)+S(I)
      • B(d);SBLOCK,XS(H)::QAR1(B)
      • S(e);SBLOCK,XP(G)::S(H)
      • P(b);::S(I)
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