MESON Chess Problem Database

Problem Display
PID: 69072 (4R3/nNknB1Q1/4R1K1/2N5/8/8/8/8 w - - 0 1)

Klemanic, Emil

HM., Vodka Ty., 2006

4R3/nNknB1Q1/4R1K1/2N5/8/8/8/8

#2

7 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc5
      • 2.Bxc5#
    • 1...Se5+
      • 2.Qxe5#
    • 1...Sb6
      • 2.Qe5#
    • 1...Sf6
      • 2.Bxf6#
    • 1...Sb8
      • 2.Qe5#
    • 1...Sf8+
      • 2.Bxf8#
  • Tries
    • 1.Bd8+?
      • 1...Kc8
        • 2.Ba5#
        • 2.Bb6#
      • 1...Kb8!
  • Keys
    • 1.Sa5!
      • threat
        • 2.Sa6#
      • 1...Se5+
        • 2.Qxe5#
      • 1...Sf8+
        • 2.Bxf8#
      • 1...Sxc5
        • 2.Bxc5#
      • 1...Sc6
        • 2.Rxc6#
      • 1...Sb6
        • 2.Bd6#
        • 2.Qe5#
      • 1...Sf6
        • 2.Bxf6#
      • 1...Sb8
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(c);OGATE,XS(A)::QAR(F)+B(E),XS(c)
    • S(c);CHECK,N_GUARD::QAB(F),XS(c)
    • S(c);N_GUARD::QAB(F)
    • S(c);OGATEB::QAR(F)+B(E),XS(c)
    • S(c);CHECK,OGATEB::QAR(F)+B(E),XS(c)
  • Tries
    • Try
      • B(E);CHECK,P_PINS(c)
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT
  • Actual
    • S(D);
    • Threat
      • S(A)
    • Vars
      • S(c);CHECK,N_GUARD::QAB(F),XS(c)
      • S(c);CHECK,OGATEB::QAR(F)+B(E),XS(c)
      • S(c);OGATE,XS(A)::QAR(F)+B(E),XS(c)
      • S(a);N_GUARD::R1(B),XS(a)
      • S(c);OGATEB::QAR(F)+B(E),XS(c)
      • S(c);N_GUARD::QAB(F)
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