MESON Chess Problem Database

Problem Display
PID: 200157 (2K4Q/5B2/3p1P2/BRn1k3/3p1p1N/b1N1nP2/8/4R3 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Phenix, 1994

2K4Q/5B2/3p1P2/BRn1k3/3p1p1N/b1N1nP2/8/4R3

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...dxc3
      • 2.Bxc3#
    • 1...d5
      • 2.Bc7#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Qh5#
      • 1...d3
        • 2.Bc3#
      • 1...Se4
        • 2.Qe8#
      • 1...Se6!
    • 1.Rxc5+?
      • 1...dxc5
        • 2.Bc7#
      • 1...d5
        • 2.Bc7#
        • 2.Rxd5#
      • 1...Bxc5!
    • 1.Qg7?
      • threat
        • 2.Qg5#
      • 1...dxc3
        • 2.Bxc3#
      • 1...d5
        • 2.Bc7#
      • 1...d3!
    • 1.Qh6?
      • threat
        • 2.Qg5#
      • 1...dxc3
        • 2.Bxc3#
      • 1...d5
        • 2.Bc7#
      • 1...d3!
    • 1.Qd8?
      • threat
        • 2.Qe7#
      • 1...dxc3
        • 2.Bxc3#
      • 1...d5
        • 2.Bc7#
      • 1...d3!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qe8#
      • 1...d3
        • 2.Bc3#
      • 1...Sd5
        • 2.Qh5#
      • 1...Sf5
        • 2.Sg6#
      • 1...d5
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATE,XS(B)::B(E),XP(c)
    • P(g);OGATEB::B(E)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR(J)
      • Vars
        • P(c);OGATEB::B(E)
        • S(e);N_GUARD,N_SPINS(b)::QAR(J)
      • Refutation
        • S(e);
    • Try
      • R(F);CHECK,XS(e)
      • Vars
        • P(g);S_CUTB(a),XR(F)::B(E)
      • Refutation
        • B(a);XR(F)
    • Try
      • Q(J);
      • Threat
        • QAR2(J)
      • Vars
        • P(c);OGATE,XS(B)::B(E),XP(c)
        • P(g);OGATEB::B(E)
      • Refutation
        • P(c);
    • Try
      • Q(J);
      • Threat
        • QAR2(J)
      • Vars
        • P(c);OGATE,XS(B)::B(E),XP(c)
        • P(g);OGATEB::B(E)
      • Refutation
        • P(c);
    • Try
      • Q(J);
      • Threat
        • QAR2(J)
      • Vars
        • P(c);OGATE,XS(B)::B(E),XP(c)
        • P(g);OGATEB::B(E)
      • Refutation
        • P(c);
  • Actual
    • S(B);N_PINS(b),P_PINS(e)
    • Threat
      • QAR(J)
    • Vars
      • P(c);OGATEB::B(E)
      • S(b);N_GUARD,N_SPINS(e)::QAR(J)
      • S(b);SBLOCK::S(D)
      • P(g);N_SPINS(e),OGATEB::B(E)
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