MESON Chess Problem Database

Problem Display
PID: 262458 (1n6/q7/1NPP3R/Qpp1kppR/1N6/3K2P1/8/1B6 w - - 0 1)

Mihajloski, Zlatko

Miloseski, Bosko

Europe Echecs, 1974

1n6/q7/1NPP3R/Qpp1kppR/1N6/3K2P1/8/1B6

#2

10 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb6
      • 2.Qa1#
    • 1...Qb7
      • 2.Qa1#
    • 1...Qc7
      • 2.Qa1#
    • 1...Qd7
      • 2.Qa1#
    • 1...Qe7
      • 2.Qa1#
    • 1...Qf7
      • 2.Qa1#
    • 1...Qg7
      • 2.Qa1#
    • 1...Qh7
      • 2.Qa1#
    • 1...Sa6
      • 2.Qa1#
    • 1...Sxc6
      • 2.Sxc6#
    • 1...cxb4
      • 2.Qxb5#
    • 1...c4+
      • 2.Sxc4#
    • 1...f4
      • 2.Rxg5#
  • Tries
    • 1.Sd7+?
      • 1...Qxd7
        • 2.Qa1#
      • 1...Sxd7!
    • 1.Rh1?
      • threat
        • 2.Re1#
      • 1...c4+
        • 2.Sxc4#
      • 1...f4!
    • 1.Rh2?
      • threat
        • 2.Re2#
      • 1...c4+
        • 2.Sxc4#
      • 1...f4!
    • 1.Qxa7?
      • threat
        • 2.Qa1#
        • 2.Qe7#
        • 2.Qg7#
      • 1...Sxc6
        • 2.Sxc6#
        • 2.Sd7#
        • 2.Qg7#
      • 1...f4
        • 2.Rxg5#
      • 1...Sa6
        • 2.Sd7#
        • 2.Qe7#
        • 2.Qg7#
      • 1...Sd7
        • 2.Sxd7#
        • 2.Qa1#
      • 1...c4+!
  • Keys
    • 1.Ke3!
      • threat
        • 2.Sd3#
      • 1...f4+
        • 2.gxf4#
      • 1...Qxb6
        • 2.Qa1#
      • 1...cxb4
        • 2.Qxb5#
      • 1...c4
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • Q(f);N_GUARD,XS(G)::QAB(E)
    • Q(f);N_GUARD::QAB(E)
    • Q(f);N_GUARD,P_PINP(I)::QAB(E)
    • S(g);S_CUTQ(f)::QAB(E)
    • S(g);XP(H)::S(D),XS(g)
    • P(b);OGATEB,P_SPINP(a),XS(D)::QAR(E),XP(a)
    • P(b);CHECK,P_SPINP(a)::S(G),XP(b)
    • P(d);OGATEB,P_SPINP(e)::R(F),XP(e)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • Q(f);P_PINP(I),XS(G)::QAB(E)
      • Refutation
        • S(g);XS(G)
    • Try
      • R(F);
      • Threat
        • R(F)
      • Vars
        • P(b);CHECK,P_SPINP(a)::S(G),XP(b)
      • Refutation
        • P(d);
    • Try
      • R(F);
      • Threat
        • R(F)
      • Vars
        • P(b);CHECK,P_SPINP(a)::S(G),XP(b)
      • Refutation
        • P(d);
    • Try
      • Q(E);XQ(f)
      • Threat
        • DUALS(3)
      • Vars
        • P(d);OGATEB,P_SPINP(e)::R(F),XP(e)
      • Refutation
        • P(b);CHECK
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • S(D)
    • Vars
      • P(d);CHECK,OGATE,P_SPINP(e)::P(C),XP(d)
      • Q(f);N_GUARD,XS(G)::QAB(E)
      • P(b);OGATEB,P_PINS(G),P_SPINP(a),XS(D)::QAR(E),XP(a)
      • P(b);OGATEB,P_PINS(G),P_SPINP(a)::QAR(E),XP(a)
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