MESON Chess Problem Database

Problem Display
PID: 238783 (8/4K3/p1P3p1/p3k3/3NB1r1/3Q1RP1/r3pP2/q5n1 w - - 0 1)

Janevski, Zivko

Schach-Aktiv, 2006

8/4K3/p1P3p1/p3k3/3NB1r1/3Q1RP1/r3pP2/q5n1

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.gxf4#
    • 1...Sxf3
      • 2.Sxf3#
    • 1...g5
      • 2.Rf5#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qd5#
      • 1...Rxe4
        • 2.Qd6#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Qd1!
    • 1.Bxg6?
      • threat
        • 2.Rf5#
      • 1...Kd5
        • 2.Rf5#
      • 1...Sxf3
        • 2.Sxf3#
      • 1...Rg5
        • 2.Qe4#
      • 1...Rf4!
    • 1.Rf6?
      • threat
        • 2.Re6#
      • 1...Rxg3
        • 2.f4#
      • 1...Rxe4!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qd5#
      • 1...Kxe4
        • 2.Re3#
      • 1...Qxd4
        • 2.Qe6#
      • 1...Rxe4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(e);OGATE::P(D),XR(e)
    • S(b);XR(C)::S(E),XS(b)
    • P(i);N_GUARD::R1(C)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(B)
      • Vars
        • R(e);SBLOCK,XB(F)::QAB1(B)
        • Q(a);N_GUARD::QAB1(B),XQ(a)
      • Refutation
        • Q(a);
    • Try
      • B(F);XP(i)
      • Threat
        • R1(C)
      • Vars
        • K(g);P-FLIGHT::R(C)
        • S(b);XR(C)::S(E),XS(b)
        • R(e);N_GUARD::QAR1(B)
      • Refutation
        • R(e);
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • R(e);N_GUARD,XP(D)::P(A)
      • Refutation
        • R(e);XB(F)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(g);OGATEB,P-FLIGHT,XB(F)::R1(C)
      • Q(a);SBLOCK,XS(E)::QAR1(B)
      • R(e);SBLOCK,XB(F)::QAR2(B)
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