MESON Chess Problem Database

Problem Display
PID: 213912 (1BR5/2K2N2/7p/4RN1r/5kq1/2p2p1Q/p1r1p2P/1B2n2b w - - 0 1)

Ancin, Andrej

Hlas l'udu, 1970

1BR5/2K2N2/7p/4RN1r/5kq1/2p2p1Q/p1r1p2P/1B2n2b

#2

9 + 11

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5
      • 2.Qg3#
    • 1...Qg3
      • 2.Qxg3#
      • 2.hxg3#
    • 1...f2
      • 2.Qe3#
  • Tries
    • 1.Kd7?
      • threat
        • 2.Rc4#
      • 1...Rd2+
        • 2.Rd5#
      • 1...Qg1
        • 2.Rxe2#
        • 2.Re3#
        • 2.Re6#
        • 2.Re7#
        • 2.Ree8#
      • 1...f2
        • 2.Qe3#
      • 1...Qxf5+!
  • Keys
    • 1.Kd8!
      • threat
        • 2.Rc4#
      • 1...Qh4+
        • 2.Re7#
      • 1...Qg5+
        • 2.Re7#
      • 1...Qg8+
        • 2.Re8#
      • 1...Rd2+
        • 2.Rd5#
      • 1...Qxf5
        • 2.Qg3#
      • 1...Qg1
        • 2.Rxe2#
        • 2.Re3#
        • 2.Re6#
        • 2.Re7#
        • 2.Re8#
      • 1...f2
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(i);N_GUARD,XS(E)::QAB1(C)
    • P(g);OGATE::QAB1(C)
  • Tries
    • Try
      • K(F);P-FLIGHT,P_SPINS(E)
      • Threat
        • R(I)
      • Vars
        • R(d);CHECK::B(H)+R(D)
        • P(g);OGATE::QAB1(C)
      • Refutation
        • Q(i);CHECK,XS(E)
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • R(I)
    • Vars
      • Q(i);CHECK::B(H)+R(D)
      • R(d);CHECK::B(H)+R(D)
      • Q(i);N_GUARD,XS(E)::QAB1(C)
      • P(g);OGATE::QAB1(C)
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