MESON Chess Problem Database

Problem Display
PID: 255154 (3R3K/p4NB1/5N2/8/QPk1P2p/5P2/2nPP1pq/8 w - - 0 1)

Janevski, Zivko

Zadachi i Etyudi, 2006

3R3K/p4NB1/5N2/8/QPk1P2p/5P2/2nPP1pq/8

#2

11 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Se5#
    • 1...Qe5
      • 2.Sxe5#
    • 1...Qh1
      • 2.Se5#
    • 1...Qh3
      • 2.Se5#
  • Tries
    • 1.Sg4?
      • threat
        • 2.d3#
      • 1...Qe5
        • 2.Sgxe5#
        • 2.Sfxe5#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Se1
        • 2.Se3#
        • 2.Rd4#
      • 1...Sd4
        • 2.Se3#
        • 2.Rxd4#
      • 1...Sxb4!
    • 1.Sd5?
      • threat
        • 2.d3#
      • 1...Sxb4
        • 2.Qxb4#
      • 1...Se1
        • 2.Se3#
      • 1...Qe5!
    • 1.Sh5?
      • threat
        • 2.d3#
      • 1...Qe5
        • 2.Sxe5#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Se1
        • 2.Rd4#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sxb4!
    • 1.Sh7?
      • threat
        • 2.d3#
      • 1...Qe5
        • 2.Sxe5#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Se1
        • 2.Rd4#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sxb4!
    • 1.Se8?
      • threat
        • 2.d3#
      • 1...Qe5
        • 2.Sxe5#
      • 1...Qd6
        • 2.Sfxd6#
        • 2.Sexd6#
      • 1...Se1
        • 2.Rd4#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sxb4!
    • 1.Sg8?
      • threat
        • 2.d3#
      • 1...Qe5
        • 2.Sxe5#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Se1
        • 2.Rd4#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sxb4!
    • 1.Rc8+?
      • 1...Kd4
        • 2.Qxa7#
      • 1...Qc7!
    • 1.b5+?
      • 1...Kc5
        • 2.Sd7#
      • 1...Sb4!
  • Keys
    • 1.Sd7!
      • threat
        • 2.d3#
      • 1...Qe5
        • 2.Sdxe5#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Se1
        • 2.b5#
      • 1...Sd4
        • 2.b5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(c);N_GUARD::S(H)
    • Q(c);N_GUARD::S(H),XQ(c)
  • Tries
    • Try
      • S(G);
      • Threat
        • P(A)
      • Vars
        • Q(c);N_GUARD::S(H),XQ(c)
      • Refutation
        • S(a);P_SPINS(a),XP(E)
    • Try
      • S(G);
      • Threat
        • P(A)
      • Vars
        • S(a);OGATE,P_SPINS(a),XP(E)::QAR1(D),XS(a)
        • S(a);N_GUARD::S(G)
      • Refutation
        • Q(c);P_PINB(I)
    • Try
      • S(G);
      • Threat
        • P(A)
      • Vars
        • Q(c);N_GUARD,P_PINB(I)::S(H),XQ(c)
        • Q(c);N_GUARD::S(H),XQ(c)
        • S(a);N_GUARD::R1(J)
        • S(a);N_GUARD::R1(J),XS(a)
      • Refutation
        • S(a);P_SPINS(a),XP(E)
    • Try
      • S(G);
      • Threat
        • P(A)
      • Vars
        • Q(c);N_GUARD,P_PINB(I)::S(H),XQ(c)
        • Q(c);N_GUARD::S(H),XQ(c)
        • S(a);N_GUARD::R1(J)
        • S(a);N_GUARD::R1(J),XS(a)
      • Refutation
        • S(a);P_SPINS(a),XP(E)
    • Try
      • S(G);
      • Threat
        • P(A)
      • Vars
        • Q(c);N_GUARD,P_PINB(I)::S(H),XQ(c)
        • S(a);N_GUARD::R1(J)
        • S(a);N_GUARD::R1(J),XS(a)
      • Refutation
        • S(a);P_SPINS(a),XP(E)
    • Try
      • S(G);
      • Threat
        • P(A)
      • Vars
        • Q(c);N_GUARD,P_PINB(I)::S(H),XQ(c)
        • Q(c);N_GUARD::S(H),XQ(c)
        • S(a);N_GUARD::R1(J)
        • S(a);N_GUARD::R1(J),XS(a)
      • Refutation
        • S(a);P_SPINS(a),XP(E)
    • Try
      • R(J);CHECK
      • Vars
        • K(d);N_GUARD,P-FLIGHT,S_CUTQ(c)::QAB(D),XP(f)
      • Refutation
        • Q(c);P_SPINQ(c)
    • Try
      • P(E);CHECK
      • Vars
        • K(d);P-FLIGHT,S_CUTS(a)::S(G)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • S(G);
    • Threat
      • P(A)
    • Vars
      • Q(c);N_GUARD,P_PINB(I)::S(G),XQ(c)
      • Q(c);N_GUARD::S(H),XQ(c)
      • S(a);N_GUARD::QAR(D)+P(E)
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